Roy D Pea

Barbara Means

Robert T~nker

John Bransford

Marca L~nn

Jeremy Roschelle

Toward a Learning Technologies Knowledge Network 0

Learning Technologies (CILT) is designed to be a national resourcefor stimulating research and development of technology-enabled solutions to critical problems in K-14 science, math, engineering and technology learning. The Center, launched at the end $1997, is organized around four themes identg5ed as areas where research is likely to result in major gains in teaching and learning, and sponsors research across disciplines and institutions in its four themeareas. CILT brings together experts in thefields fcognitive science, educational technologies, computer science, subject matter learning, and engineering.

Sherry HSI Sean Brophy Nancy Songer

Federal research and development projects (R&D) have for several decades contributed substantially to our understanding of how to use information technologies to improve learning. New knowledge provided by cognitive, social, and learning scientists, computer scientists, and subject-matter specialists studying learning has generated advances in our understanding of learning (e.g., Greeno, Collins, & Resnick, 1996). These developments have also led to new architectures for interactive learning environments, and widespread recognition of the shaping roles of social context, motivation, and teacher knowledge in determining whether learning technologies have their desired effects (e.g., Riley, Kunin, Smith, & Roberts, 1996; US. Congress, Office of Technology Assessment, 1995). The most exciting results indicate that we can use technology to revolutionize learning and provide discontinuous rather than incremental improvements in education (e.g., Bransford and Brown, 1998; President's Committee of Advisors on Science and Technology [PCAST], 1997). Young children can learn subjects previously thought well out of their reach (such as calculus by inner-city middle school students). Technology can support learning outside of school (as in collecting scientific data in the field using hand-held computers).

Results like these are largely fragmented, difficult to find and track even for research specialists in these fields; even more so for those who could use such knowledge to powerful effect. Commercial learning-technology products are largely developed without awareness, much less use, of these research developments. Similarly, research groups in universities often fail to use new developments from industry (e.g., component software, groupware). How can learning technology innovations be fostered and scaled at a national level? How can the engines of change that computers and information networks represent be turned to knowledge networks for fostering learning-technology invention, testing, use, refinement, and commercialization? The nation needs an integrated forum for building and sharing the wisdom and insights derived from highly diverse sources-university and think-tank-based researchers, industry groups, and teacher knowledge developed through their own innovations and implementations of learning technologies in their classrooms.

The time is ripe for information technologies to make major contributions to improved learning in science, mathematics, engineering, and technology (SMET) at all levels and for all learners. The continued increase of performance in information technology, the huge growth in networking technologies, our increasing understanding of learning and intelligent systems, and the widespread concern for educational quality, standards, and technology utilization are combining to make what could be a decade of educational revolution led by technology (Office of Science and Technology Policy, 1997). Given these expectations, a coordinated, inclusive effort to build an effective leaming-technologies knowledge network is needed to fully exploit this opportunity because: Our work is increasingly complex; broad collaboration is essential; more interaction is needed; and fieldinitiated R&D needs coordination. ing complexity, few projects, institutions, di> ciplines, or funders can encompass the range c expertise needed to mobilize the combination o new technologies and new insights into learnin; to identify and solve real-world learnin) challenges. Achieving major impact require aggregating ideas and integrating innovation.. Innovation must start with an understanding o both educational needs and technological poss~ bilities, and be based on technical trends, learn ing theory, changing school realities, possiblt marketing arrangements, and disseminatior strategies. Close collaboration among a broad range of researchers, industries and schools i : the only strategy that can marshal these resources in a timely, effective manner.

More interaction is needed. New studies of online communities conducted for a diversity of industries indicate that the key to new market opportunities and increasing returns is to combine content and communicatioi~. [START_REF] Hagel | Net.gnirr-Expnnding markets through uirtiial c o n ~r n ~o ~~t i e ~. BOSton[END_REF] demonstrate how new value is created and captured in on-line communities by providing not only content but also communication and search tools that enable community members to interact and build relationships. There are surprisingly few opportunities for such timely sharing of insights and pre-publication~ among potential learning technology collaborators with similar goals but different professional affiliations.

Field-initiated RDD needs coordinntioi?. The usual strategy of relying on funded field-initiated projects to produce educational change needs to be O u r zvork is it~crcasit~gly complex. Whereas classsupplemented with coordination provided by room-oriented tools have been the primary the profession itself. Funders can rarely move focus of previous R&D, we believe that the field quickly enough to explore emerging opportunimust make a crucial transition to focus on ubiqties created by technologies that can now go uitous access to information appliances by all through two generations in the time it takes to learners, both in and out of school. This focus conceive, submit, and award a proposal. These means broadening the technology repertoire long processing times favor larger grants that beyond desktop computers in schools and then tend to be more risk averse and, hence, less exploiting diverse digital devices including new, innovative. Because each proposal is viewed in mobile "learning appliances," networking infraisolation, field-initiated R&D seldom forces the structures, and developments in distributed sysselection of a problem's best solution. In result, tems for anytime-anywhere learning.

suboptinla1 strategies are pursued while more promising research strategies requiring sequen-Broad collnl~arafior~ is esstwtial. Given this increastial grants are difficult to sustain.

In summary, we need to explore flexible, quick, but thoughtful innovations that solve important educational problems and draw from a wide range of expertise. These innovations need to be winnowed, and the best shepherded through several phases of development and dissemination, with input from a range of actors and institutions. The Center for Innovative Learning Technologies (CILT) was established with initial funding from the National Science Foundation in order to provide these mechanisms.

OVERVIEW OF CILT

CILT is a unique collaboration of organizations that have come together to respond to the opportunities and meet the needs described above. CILT has devised strategies and organizational structures that can economically make progress on these huge issues. This section describes the overall CILT structure.

CILT Mission

The primary CILT mission is to serve as a national resource for stimulating research on innovative, technollgy-enabled solutions to critical problems in learning for all K-14 learners. Our approach is to engage the collaborative efforts of a wide spectrum of people and institutions. There is the need to coordinate the efforts of computer scientists and engineers, education researchers, cognitive scientists, educators, industry researchers and developers, and subject matter experts throughout the world. We want to attract to learning and education, people from diverse fields and institutions, including those in business, military, universities, and nonprofit organizations.

To accomplish this mission, CILT defined the following objectives: ldentfjj areas qf high potential. Each year, the CILT leadership reviews and evaluates educational needs and technology-enabled innovations in order to select four general themes and a few specific multidisciplinary partnership projects with the greatest potential for breakthroughs in each theme area.

Support rapid innovation. By convening annual agenda-setting workshops for "theme teams" in these areas of breakthrough potential, CILT aims to coordinate and leverage developments in the learning-technologies field, identify prospects for important multidisciplinary prototype projects, and stimulate others to undertake similar R&D by drawing attention to targets of opportunity.

Stinmlate collnboratizw developn~ent i,7 selected areas. In each of the four themes identified, CILT convenes meetings and fosters on-line discussions designed to share ideas and build collaborations between diverse communities.

Foster widespread research al7d dissetninntion.

For each theme identified, CILT is reviewing promising practices and selecting the best available technology for support, testing, development, research, and broad dissemination.

Train n e w prqfessionals. On two-year cycles, CILT is recruiting, training, and supporting postdoctoral fellows who will be an integral part of high-risk, high-potential multidisciplinary prototype projects for each priority identified by a theme team.

CILT Leadership, Structure and Strategies

CILT operates as a consortium of four core founding institutions: SRI International; University of California, Berkeley; Concord Consortium; and Vanderbilt University. Roy Pea (SRI International) serves as CILT's Director. Marcia Linn (University of California, Berkeley), Robert Tinker (Concord Consortium), John Bransford (Vanderbilt University), and Barbara Means (SRI International) serve as coprincipal investigators. Together they comprise CILT's Leadership Council, and set the Center's long-range goals, select the most promising themes for investigation, and assemble teams to pursue them. The four founding organizations each bring to CILT a broad range of expertise and an international reputation for making effective and innovative contributions to technologyenhanced learning.

CILT seeks to harvest the brightest ideas and best practices, and then to direct coherent activities toward topics in greatest need of breakthroughs. To marshal the best resources, to obtain crucial input, and to include leaders from many organizations, sectors, and disciplines, we designed CILT as a national effort that relies heavily on invitational workshops and collaboration technologies to make its activities inclusive. The Center's primary work is accomplished by the mechanism of theme teams, each of which contributes to the R&D, communications, training, and evaluation objectives of the Center. The theme teams coalesce insights and initiate new pilot projects that form a foundation for collaborative development through an open but focused process. Theme teams coordinate research, encouraging participants to build on each other's innovations, carry out evaluations and joint research, and critique each other's technological environments.

How Did We Come to t h e Center's Theme-Team Areas?

As a group, our CILT leadership team shares educational perspectives that emphasize the importance of carefully designed activities that involve the learner in appropriating a combination of skills, concepts, and mental models through active engagement in guided inquiry, exploration, challenges, reflection, and communication. Technology can support these learning strategies by providing access to new collaborators, mentors, and teachers; augmenting the range of inquiry with more powerful and intelligent tools; "scaffolding" students as they visualize and model complex situations; and providing underlying alternative, authentic methods of evaluating student performance. Starting with this analysis of educational and technological needs, we searched for breakthrough opportunities where our national collaborative structure could make major contributions. To provide substance to our collaboration, we needed to identify opportunities close enough to reality that we could create prototype technologies that can be tested by our colleagues in a variety of real classroon~s and other learning contexts. At the same time, the technol-ogy must not be transitory; we need to rely on i t wide availability and continual in~provenle~ over the next decade.

Weighing these criteria and sun,eyin emerging technologies from these education, perspectives, we identified four thematic area with tremendous potential: (a) visualization an, modeling; (b) technology and assessment moc els; (c) ubiquitous, low-cost computing; and ( r tools for learning communities. They represelour current judgment for the greatest potenti; for emerging technologies to make majo advances in SMET education. Each addresses a1 educational challenge, identifies a breakthrougi opportunity, and involves potentially importan technologies that can be quickly implementec and tested. These opportunities became tht focus of the initial four theme teams and art summarized below. Others may evolve in futur, CILT work.

Vis~ialization and modeling. The challenges arc that more diverse students need to learn SME7 concepts more deeply, just as these fields arc becoming increasingly complex. The break through opportunity is that dynamic interactivt images based on models may allow broadel access to understanding; modeling provides a unifying conceptual vocabulary across the majot topics of science and mathematics.

Technology and assessment models. The challenge is that older testing practices undermine effortc to implement new, more powerful ways ol learning and teaching. The breakthrough opportunity is that technology can enable embedded, ongoing assessment of developing knowledge and reasoning skills, and support more authentic forms of performance and portfolio assessment activities.

Ubiquitous, low-cost computing. The ubiquitous availability of computation and networking could have a profound impact on education. The breakthrough opportunity is that the right combinations of inexpensive portable computers, wireless networking, component software, probeware, and learning software (content, tools, activities) could enable many more learners to engage in deeper levels of inquiry for learning across a wider range of contexts and time frames.

Tools for learning communities. The challenge is that significant innovation in education requires more than a focus on the local process of learning. The breakthrough opportunity is to increase learning through transformations in the social participation of learners in different communities for knowledge building. These transformations may be enabled by network-based collaborative learning tools, multiuser virtual environments and social information filtering. These new connections may also support deeper engagement and ongoing professional development for teachers, and engage disciplinary experts and parents in distributed learning environments.

Achieving deep reform in SMET education requires integrating multiple perspectives into each theme team's work. There are, of course, cross-cutting issues that we view as important and which we aim to reflect in CILT's project portfolio, including equity, access, and gender (e.g., [START_REF] Chubin | The Jasper experiment: An exploration of issues in learning and instructional design[END_REF]; teacher development ( e g , [START_REF] Shulman | Knowledge and teaching foundations of the new reform[END_REF]; informal learning; and cognition and instruction.

How CILT Theme Teams Work

Each theme team is led by one or more of the five members of the CILT Leaderslup Council, and one or two additional coleaders who have made outstanding contributions to the theme in different disciplines.' By linking each team to the core project leadership, CILT can undertake flexible planning and regular resetting of priorities. The theme team structure permits us to realize our goals of stimulating broad, national collaboration, but in a way that is targeted, feasible, and nimble.

Through an annual workshop and on-line discussions, each team surveys educational needs and critically evaluates available technologies germane to its theme with the goal of identifying gaps, overlaps, and priorities for breakthroughs in theme research. Professionals are invited to come to the workshops, share their developments, and look for collaborators. To stimulate collaboration, CILT offers small grants for pilot partnership projects. Project proposals are evaluated according to criteria including concept potential (e.g., innovative and generative; exemplify an innovative, promising instructional framework), leveraging of other resources, involvement of multiple institutions, interdisciplinary teaming, rapid delivery plans, and plans for assessment and documentation of outcomes. Because the resulting collaborations can bring to bear a wide range of human, institutional, and financial resources, CILT is highly leveraged. More than half of the available funds for research are intended for researchers outside the founding institutions.

To build community and create a new generation of researchers informed by our community, CILT has a postdoctoral scholar program, coordinated by Professor Marcia Linn, that creates a partnership among recent Ph.D. recipients from the broad range of disciplines represented in the theme teams. Our goal was to attract candidates with a strong mathematics, natural science, engineering, or computer science background. Additionally, we hoped to find candidates with a background or knowledge of learning and education issues. Assessment Models)

SUMMARY OF CILT RESEARCH

In this section we sketch the orientation and work of the four theme teams and the pilot partnership projects that have emerged from the theme-team workshops and follow-up activities in the first year of the Center. More detailed archives of the workshop agendas, meeting participants, ongoing research project descriptions and URLs, are available from the main CILT Web site, http:/ /www.cilt.org.

Workshops

From January through May 1998, CILT conducted a first round of four workshops, one for each theme. We found that the theme-team approach is not only viable but was welconled and found energizing by participants. Invitations to more than 1,000 people were sent and more than 300 different individuals participated in the four workshops.

The workshop included five-minute presentations by participants, brainstorming sessions to generate ideas for projects, and discussions of plans for collaborations and follow-up on project ideas. The quick presentations that led off each of the workshops seemed to be very effective as a mechanism for allowing participants to introduce themselves and their work. These presentations stimulated questions that led to rich, informal one-on-one or small-group exchanges afterwards. On-site demonstrations of learning technologies supported collaborative dialogues across ongoing projects.

Participants identified areas of "collaborative need" in each workshop's introductory panels. Full-session brainstorming identified priority issues for R&D; breakout sessions developed synergies across the project groups represented that were later reviewed and elaborated in fullgroup session. Group leaders identified areas of overlapping findings, areas of diverging findings, and areas of technology, research, or implementation challenge. A central theme for both organized and informal discussions among CILT workshop participants seemed to be the matching of areas of educational need with existing or potential tools and technologies to address those needs. It appeared that the CILT workshops provided a rare and welcon~e opportunity for many participants to engage in this sort of discussion. Listing and regrouping project concepts on large sheets of paper spread around the walls of a room and voting by participants on the concepts for which they would be most interested in developing collaborations created many opportunities for lively, informal interchanges.

Follow up on collaborations emerging from CILT workshops is ongoing. Typically, at the close of a CILT workshop, 5 to 9 partnership project concepts are identified. Roughly half define a leader, propose a project, and end up leading to successful proposals for partnership projects. Although it is a challenge for workshop participants to continue the discussions and develop collaborations across institutions and disciplines, nearly 20 of these collaborations have produced proposals for CILT or external funding. CILT funded 12 partnership projects in its first year. Many of these proposals involve collaborations among people who had not worked together (and, in some cases, had never met) prior to CILT workshops. Quite a few involve young investigators who are entering into collaborations with more senior researchers in the field. CILT postdoctoral fellows are involved in these different collaborative efforts as well.

Starting in 1999, CILT combined the four themes into one annual national workshop. This annual meeting took place from April 29 to May 2 in San Jose; next year's meeting is planned for Washington DC, alternating this cycle in following years. This new format will stimulate CILT. wide collaborations and synthesis, while alsc fostering theme-team based discussions.

Theme Team 1: Visualization and Modeling

Codirectors of Theme Team I were Profess01 Marcia C. Linn, Nancy Songer, and Andrea d Sessa.

This team seeks to create prototype tools th, connect promising science models for learner technological environments for visualizatioi and intelligent instructional frameworks tli.

help diverse students use these models ( e g , [START_REF] Linn | Designing computer learning environments for engineering and coniputel-science: The scaffolded knowledge integration environment. /011rno1 'Sci~wct[END_REF]. This theme team works with other researchers to develop a set of guidelines for adapting professional visualization and modeling toolkits for learners, create prototype instruction that helps students find the best set of models to work with, and xvork toward a common methodology for evaluating these visualization tools in authentic, diverse courses that encourage students to develop a lifelong habit of expanding, comparing, and refining their repertoire of models.

Visualization tools have revolutionized research activities and communications in SMET among university and industry researchers. Researchers can explore and combine images of complex weather events like hurricanes, molecular structures such as pockets on the surface of proteins, or environmental impacts of factors such as deforestation. In the past few years, well-designed tools have enabled students to learn concepts and ways of thinking previously accessible only to experts. Visualization tools can exploit the power of technology to help students understand hard problems such as global change, complex system design, or international disease control (e.g., Gordin & Pea, 1995; Jackson, Stratford, Krajcik, & Soloway, 1996). For example, in the CoVis Project, Roy Pea and colleagues at Northwestern University (NWU) and University of Illinois, Urbana-Champaign (UIUC) have created precollege learning environments for collaborative student investigations using real-time weather data from satellites and supercomputer processing, and archival data and student-centered visualization tools in the geosciences (e.g., Gomez, Fishman, & Pea, 1998; Pea, Gomez, Edelson, Fishman, Gordin, & O'Neill, 1997).

Many learners assert that they learn best when they can mentally "see" how something works (Reiner, Pea, & Shulman, 1995; Russell & Kozma, 1994). Instruction requires making hard choices among topics, as well as difficult decisions about which scientific models to emphasize when a topic is taught (Hestenes, 1987; Horwitz & Barowy, 1994; White, 1993). The term model, in our usage, includes theories, images, and explanations presented in any medium. Exemplars include dynamic animations that model device structures or thermodynamic systems (Forbus & Whalley, 1994), global warming visualizations that illustrate the earth's energy exchange system, population ecology simulations, and virtual worlds for learning Newtonian mechanics (Dede, Salznian, & Loftin, 1996).

The theme-team approach is well suited for work on visualization environments for science learning. First, powerful environments for visualization already exist in university, industrial, and national research laboratories, and may be adapted as pedagogically meaningful versions. Second, success depends on partnerships between experts in technology, science and mathematics disciplines, and pedagogy (National Science Foundation [NSF], 1996). There are tensions between technological and pedagogical solutions to problems that can best be addressed in partnership. Often, classrooms embrace new technologies without exploring the implications for the curriculum or the learning environment (Linn, diSessa, Pea, & Songer, 1994). Third, current standard-setting efforts in SMET education, such as the National Council of Teachers of Mathematics (NCTM) standards for school mathematics (19891, National Research Council (NRC) science education standards (19961, or American Association for the Advancement of Science's (AAAS) Project 2061 (AAAS, 19931, call for more efficient, effective multidisciplinary learning environments that are best developed in tight cycles of design, reflection, and redesign. Hard problems could link the largely unfocused curriculum in most United States schools identified in the Third International Mathematics and Science Study (TIMSS) to issues that concern all citizens (Schmidt, McKnight, & Raizen, 1997). Public understanding of science is a national need, and materials for studying such hard problems are in demand for precollege courses.

Fourth, visualization and simulation tools empower students to continue to explore complex problems in subsequent courses and for their own edification. These tools help students become autonomous learners who can carry out projects more and more independently. By making tools available on the Internet, we can support lifelong learning in the context of these hard problems.

Research

The theme team began by inviting workshop participants representing projects with most or all of the following properties: Developn~ent and research of specific new applications for visualization and modeling, including hands-on visualization and modeling tools, use of multiple representations for such complex phenomena as the weather, and use of intermediate models to understand difficult concepts.

Application of visualization and modeling to improving instruction in science, mathematics, engineering, or technology for students from kindergarten to Grade 14.

Empirical investigations of the impact of visualization and modeling on standardsbased learning outcomes.

Interest in advancing understanding of technical and design issues necessary for creating powerful and useful tools, impacting students and teachers in broad and diverse settings (including home, school, museum, and community), and defining an instructional framework to guide developers of the next generation of innovations. These led to four CILT projects that are underway as of the end of 1998 (see http:cilt.org for current information):

1. Visunlizing the Amazonian Rain Forest. (Project Leader: Douglas Gordin, formerly Michigan State University, now SRI Intema-tional). In a collaboration with Osiris Studios, two forms of visualization will be integrated and made mutually supporting for aiding students' inquiries concerning the complex ecosystem dynamics of the Amazonian rain forest. The visualization technologies to be used are virtual reality modeling language (VRML) and geographic information systems (GIs) with satellite images.

Virtual Reality Solar Sysfen7 (VRSS).

(Project Leader: Kenneth Hay, U.Ga.). This project seeks to revolutionize astrononly education. II extends the VRSS Project, now an experimental undergraduate astronomy course taught at Indiana University (IU) as a traditional lecture-based course, into a constructionist course at both IL and U.Ga. Students will build virtual realit! models of different aspects of the solar system ir collaborative teams on high-end graphics con1 puters. Development innovations include incor porating knowledge integration and a learnei collaboration support system into the coursc and incorporating primitives appropriate to , conceptual understanding of the astrononi? domain. Research will explore the impact o these new functionalities for student learning.

Digital Weather Station ( D W S ) . (Projec

Leader: Sasha Barab, IU). The DWS is an exhibi at the Children's Museum of Indianapolis, wit; the aim of developing students' understandin, of the weather as a three-dimensional (3D) sy: tem and their skills in the scientific process ( visualization. The DWS runs on three high-en Silicon Graphcs, Inc. workstations and utilizt an interface designed to enable young childre to manipulate a sophisticated, expert-level sc entific visualization environment. The tools su1 port learners' immediate creation of 3 interactive, dynamic visualization of standal weather parameters. These are not scaled-dolt tools visualizing fictitious data; they are built c the same tool environment and data used ever. day by scientists. The DWS team has designt and developed an innovative learner's interfat that almost eliminates the technical and domai, learning curve these tools create for novices. their CILT project, the DWS team will develc inquiry-based and problem-based learn;! activities where the technology can visualize 3D phenomenon. The CILT research progral also including Vanderbilt University collaborators, will study the groups of learners of diverse ages appropriating this tool as a new way of understanding meteorology in a variety of situations adopting various pedagogical strategies (i.e., open exploration, challenge questions, guided discovery, and anchored instruction).

4. Exploring Self-Explanatory Simiilators for Middle-School Science. (Project Leader: Kenneth Forbus, NWU, Department of Computer Science). Self-explanatory simulators combine qualitative, conceptual explanations with numerical simulation. For example, a self-explanatory simulator can produce plots of the numerical values a parameter takes, like any traditional numerical simulator. But it can also summarize the behavior of the system in terms of conceptual events (i.e., liquid in a pot heating up for a while and then starting to boil) and explain the causal relationships that hold between the parameters (i.e., an increase in heat causes a change in temperature, until the boiling point is reached). Forbus et al. will explore the role of self-explanatory simulators in teachng middle-school science by creating a set of simulation activities to complement an existing curriculum. Linn and colleagues at Berkeley have developed a middle-school curriculum for learning about heat and temperature, and their longitudinal research suggests that what is learned through their method is retained better than that learned through standard teaching methods. This project will create a complementary suite of activities using self-explanatory simulators for helping students learn about thermal phenomena. The focus will be on simulationbased lab activities, such as boiling fluids in various containers, so students can explore aspects of the phenomena that would otherwise be too dangerous, expensive, or tedious to do in real-time with physical systems. These activities and a modified version of Lim's curriculum will become the starting point for a Work Circle (involving NWU and Michigan researchers with personnel from the Chicago Public School system) for the development of a curricular unit to be used in the Chicago Public School system, starting in the 1999-2000 school year. The technology development of self-explanatory simulators is already under separate funding, from NASA Ames.

Theme Team 2: Technology and Assessment Models Codirectors of Theme Team 2 were Professor John Bransford and Dr. Barbara Means.

Most United States science and mathematics classrooms continue to be dominated by hours devoted to memorizing vocabulary, facts, and set procedures [START_REF] Schmidt | [END_REF]). An extensive body of research has documented the naive conceptions of learners that remain hidden in such classrooms [START_REF] Smith | Misconceptions reconceived: A constructivist analysis of knowledge in transition[END_REF], as well as the "inert" nature of rotely learned facts and procedures (Cognition and Technology Group at Vanderbilt, 1990Vanderbilt, , 1992Vanderbilt, , 1997)). Standardized tests often reinforce the "mile-wide, inch-deep" approach to curriculum, providing little insight into students' level of understanding.

In reaction to the deficiencies of conventional curricula and pedagogy, a growing number of classrooms are engaging in exciting projectbased activities in mathematics and science (Hawkins, 1997; Krajcik, Blumenfeld, Marx, & Soloway, 1994; Means et al., 1993; Sandholtz, Ringstaff, & Dwyer, 1997). One of the biggest challenges faced by teachers in implementing such innovations is providing opportunities for frequent assessment of student learning. Without assessments that give insights into what individual students are learning through their activities, innovative projects can have disappointing results. For example, students can d o extensive water monitoring without developing an understanding of the river they monitor as an ecosystem [START_REF] Barron | Doing with understanding: Lessons from research on probleni and project-based learning[END_REF]. Teachers need to assess student thinking, and changes in that thinking, if they are to successfully implement instruction aimed at conceptual growth.

It is well documented also that the nature and content of the assessments used in classrooms have a strong influence on what and how teachers teach (Herman & Golan, 1991; Resnick & Resnick, 1985). Most assessments are tests of remembering. Because diagnosing and assessing students' understanding of, and ability to apply, the important "big ideas" in science and mathematics is so important and so difficult to do well, technology supports for meaningful classroom assessments could provide great benefits for learning.

The technology and assessment theme encompasses technology-based mechanisnls for supporting both formative (diagnostic) assessment and summative assessment to help students, teachers, school systems, and conimunities see qualities of student achievement that are invisible on traditional, standardized tests. Questions this theme team is considering include: How can network technology support the development and implementation of shared norms for assessing student work? How can network technology support measurement of what students have learned in ways that motivate students, produce further learning, and inform teacher practice? Can electronic archives of extended interactions between students and others or between students and software environments be catalogued and analyzed to produce cost-effective measures of learning and collaboration? Does changing the medium or type of assessment have a differential impact on girls, historically underserved groups, or students with disabilities? Can generalizable scienceinquiry learning metrics be developed that could be used across some range of projects?

Resenrch

The Technology Support for Assessment Workshop explored the need to assess student understanding and ability to use their knowledge and skills in new contexts, the multitude of uses made of assessments, and prototype technology-supported assessment tools. The goal of the workshop was to bring together expertise in education and technology to discuss assessment requirements, technology-supported approaches, and guidelines for effective and appropriate use of assessment information.

A number of workshop participants argued that assessment methods should go beyond looking solely at individual independent performance (e.g., [START_REF] Anderson | Cognitive tutors: Lessons learned[END_REF]. Many new instructional methods and computer environments are capitalizing on the benefits of extended, collaborative work to develop new knowledge. There is potential for creating domain tasks and assessments that capture students' development while working with others on group projects. It is also irnport-ant to help students work on assessnients that tit the kinds of activities they need for college and employment opportunities. Internet-based ill- ventories of model assessments keyed to curriculum fran~eworks and national standards wert, described and discussed.

The workshop identified five areas for potential collaborations:

1. Co-design of curriculuni and instructior includingself-assessment 2. Design framework for assessment 3. Exemplary assessments of students' learnint in groups with technology devices 4. "Dream" assessment project 5. Strategies to broaden public thinking abou, alternative assessments.

As a result of these discussions, the followin) two projects were reviewed, and accepted fol funding:

1. Aligning TIMSS Items rilith tk' NCTM Stnri dards. (Project Director: Kenneth Koedinger Carnegie Mellon University, Human-Compute Interaction Institute). Current studies of techno1 ogy-rich instruction rarely use assessment item for which there is a clear public perception o importance. National standards efforts provid a way to assess what processes have bee] judged by education experts to be importan. Also, the poor performance of United States str dents on TIMSS has received wide public atter tion. If technology innovations can lead t dramatically improved performance on categc ries of items such as those in TIMSS, this shoul, provide a clear message that such innovatior do work and are worth pursuing. This proje, will review TIMSS items, develop a mapping t the NCTM standards, and provide a clear artic~ lation of the targeted cognitive processes. Thu it is critical not only to select TIMSS item categt ries that show where United States students at lagging behind, but furthermore, to align the5 items with the NCTM standards to be cle, about the underlying cognitive processes th, are the true focus of instruction. Focusing o mathematics items in both the 8th-and 12tl grade TIMSS assessments, this team will sele, items for which United States students are la; ging behind other countries, and a draft NCTF standards alignment document will be create that indicates the mappings behind items and standards. Once TIMSS items and NCTM standards have been aligned, the field can begin to select appropriate technology projects that can address these items, and design learning assessments that target the learning strategies and knowledge that students should be acquiring.

Assessment and Technology Monograph.

(Project Directors: John Bransford and Barbara Means). The National Education Association (NEA) asked the CILT Assessment Team to prepare a book manuscript during 1998 on technology and assessment. The NEA will publish the finished book and distribute it to a broad segment of its membership including those responsible for professional development support at a regional level. NEA and CILT resources for producing the manuscript will be complemented by those of the Learning Consortium, a project organized by Vanderbilt University to use technology to improve teaching, learning, and assessment by uniting efforts among a number of groups including policymakers, leaders in school reform, and academic researchers. The plan is to discuss examples of technologyenhanced assessment approaches that exist in a number of "states" ranging from (a) interesting ideas that are just being developed; through (b) existing prototypes that are ready for testing; and finally to (c) finished products-including research products being used in classrooms and commercial products available on the market. We will also discuss the impact of current assessment practices on the promotion of technology (e.g., to what extent are some of these practices impeding the advancement of technology in schools?). This volume will serve as an early product discussing the assessment implications of cognitively oriented research on learning in technology-supported environments and is expected to pave the way for a larger, edited volume, possibly with a companion CD-ROM of promising prototype assessments.

Theme Team 3: Ubiquitous, Low-Cost Computing Codirectors of Theme Team 3 were Dr. Robert Tinker and Professor Bob Brodersen.

As learning technologies become widespread over the next few years, the disparity between what could be taught making full use of technology and what is actually taught in most classrooms will be increasingly obvious and intolerable. The problem is that creating a new sequence for teaching is a massive effort that requires a better research base and extensive experience. One cannot experiment casually with what students should learn for fear of missing critical concepts or undermining student motivation. Yet, the research conlmunity that has created the possibility of vastly improved learning must undertake this work, or see its visions unrealized and the educational potential of technology unused.

Increased use of technology in inquiry is an educational strategy at the core of educational reform and is consistently reported by educators as the most difficult aspect of reform to implement [START_REF] Sandholtz | Tmching illith techno lo^^: Crenfing stiident-crtitrred clnssroorm[END_REF]. Technology-based tools support inquiry by enhancing student ability to gather, display, and analyze data, to undertake collaborative inquiry, and to scaffold student leaming from their investigations (Norman & Spohrer, 1996). Making these tools portable could transform a variety of everyday contexts into learning opportunities in the home, street, field, bus, car and subway. Smart probes could greatly increase the quality of data gathered in student investigations. Wireless networking could bring the full resources of the Internet into these contexts (Kozma & Schank, 1998). Basing this technology on mass-produced, interoperable components could provide dramatic efficiencies of reuse, integration, and scale, making educational benefits available more equitably (Roschelle & Kaput, 1996). This theme focuses on exploring the learning opportunities ubiquity would create by scanning the technological horizons, anticipating implications for learning, and providing feedback to the marketplace. We also sponsor the development of prototype applications and affiliated leaming research that exemplifies the potential payoff of alternative devices. Finally, we sponsor research on technology-enhanced curriculum strands that build on each other and could lead to major revisions in what is thought possible for typical learners to master.

Activities

At the Ubiquitous Technologies workshop, participants defined six fertile, high-priority areas for potential CILT pilot partnership projects: From these areas, the following three projects have been developed into CILT projects:

1. Envisioning n Future Product Line of Low Cost Devices. (Project Directors: Michael Mills, IDEO and Jeremy Roschelle, SRI International). The educational community needs a better understanding of the potential in the handheld space of what we call learning appliances. We can foresee the potential for the success of these devices in the phenomenal impact of graphing calculators and probeware. This multidisciplinary group developed a set of concept sketches that should spark dialogue in our community, and draw the interest of potential research and manufacturing partners. The internationally renowned design firm IDEO has a brainstorming process called a "deep dive" that results in highly communicative and innovative concept sketches in a very short time. This process was used to create bold, exciting, compact vision pieces, which will be posted to a Web server where they could gain additional public commentary. Afterwards, we will use the sketches and commentary as Web-based discussion starters with potential partners for follow-on projects aimed at realizing the vision.

Sonic Ranger Application for the PnlmPilot.

(Project Director: Stephen Bannasch, The Concord Consortium). Mobile field investigations by learners are a key functionality for ubiquitous computing. This project involves designing Palm computer software that exploits the educational advantages of portable low-cost devices equipped with sensors for field investigations. The sensor used is a motion detector with a built-in microcontroller. This feasibility study designed a PalmPilot application and interface to the motion detector as an example of the many possibilities for interface applications to support learning with low-cost handheld devices.

3. Using Haptic Devices to Learn Mathematics and Science. (Project Director: Ricardo Nemirovsky, Technical Education Research Center). The field is increasingly aware of the role of bodily and kinesthetic activity in science and mathematics education, evidenced in the popularity of the motion detector not only in physics classes but in high school math. Force feedback could be a potential major form of engagement with mathematical symbols and scientific ideas; from mechanics to differential geometry, from chemical bonds to gravity. This project is investigating this educational potential by exploring the interplay between kinestheticbodily activity and math-science learning by using a new generation of tools with which the computer becomes sensitive to and generates forces.

Theme Team 4: Tools for Learning Communities

Codirectors for Theme 4 were Drs. Roy Pea and Jeremy Roschelle.

Significant innovation in education requires more than a focus on the local process of learning-we also need mechanisms for strengthening the community that surrounds each learner to maximize her or his learning potential (e.g., [START_REF] Brown | Conlmunities of learning and thinking: Or a context by any other name[END_REF]. Increasing the effectiveness of network-based collaboration will have huge implications for reshaping the content and pace of learning at all levels, as well as the role and identity of teachers. The educational potential of computers coupled with telecommunications has long been recognized [START_REF] Harasim | On-line educntion: Perspectives on n new environment[END_REF]Harasim, Hiltz, Teles, & Turoff, 1995;Hilz, 1990;[START_REF] Hunter | NSF's networked testbeds inform innovation in science education[END_REF][START_REF] Riel | Building Electronic communities: Successes and failures in computer networking[END_REF][START_REF] Roberts | Thefuture qfnetzuorking technologiesfor learning[END_REF]. Collaborative learning can be established between peers anywhere, bring new human resources into learning (e.g., scientists, retirees, experts), and support these collaborations with a full range of technology-based tools. The implications for formal and informal student learning, for teacher professional development, and for support of educational R&D are enormous.

With the extraordinary growth recently in "virtual universities," the "virtual classroon~," and distance learning, there is still a shortage of needed supports for collaborative learning processes. Much work on virtual universities and virtual precollege "campuses" inherits the teacher-centered, lecture-at-a-distance, information-transfer model that distance learning has had for decades (Pea & Gomez, 1992). This orientation will not be our focus. Instead, we base the efforts of our theme team on recent research in the social and cognitive sciences. This research highlights the pragmatics of supporting project-based, active inquiries in which students collaborate to construct meaning with local and distant peers, mentors, and guides ( e g , [START_REF] Pea | Seeing what we build together: Distributed multimedia learning environnients for transformative coniniunications[END_REF][START_REF] Roschelle | Learning by collaborating: Convergent conceptual change[END_REF]. We anticipate new technologies supporting highly interactive learning conversation, mediated by complex symbolic representations, such as mathematical notations, scientific visualizations, and multimedia case studies. These technologies will draw jointly o n powerful modeling tools and participants' informal sketches and annotations.

This CILT theme team has identified three main areas for development:

Area One: Shared Active Representation Tools: Beyond the General-Purpose Whiteboard. S h a r e d active representations are a critical enabling technology for successful learning conversations locally and on-line about complex subject matter in mathematics and science. They include text, graphs, digital forms of student work products, mathematical notations, simulations and visualizations, gestural depictions, annotations, and even video streams of activity.

Shared active representations are important because learners and teachers require a common ground of conversational props that they can act on together co make sense of a problenl situation. Highly interactive, multiturned conversations with such mediating representations can support the construction of new understandings. Extensive and careful empirical work on the embodied and situated nature of learning interactions and discourse indicates that highly interactive and multimodal conversations around ever-changing conversational props are commonplace(e.g., [START_REF] Goodwin | Conversation analysis[END_REF][START_REF] Roschelle | Learning by collaborating: Convergent conceptual change[END_REF]. When two or more people are learning together face-to-face, or when one or more learners are engaged interactively with a mentor or teacher, there is a rich interchange of graphical and verbal representations, and gestures, pointing, and linguistic reference to aspects of these representations are fundamental parts of the process of interpretation and making of meaning. These representations made during learning interchanges become "layered" rather quickly, as annotations and other markings-such as circles and underscores-are used to direct the attention of other participants.

CILT is particularly interested in harvesting and organizing insights about tools for learning communities that will deepen our understanding about how to support highly interactive, media-rich interchanges in distributed learning communities. Beyond the shared whiteboards of many collaboration software environments, w e are interested in other kinds of activity supports for symbolic expressions more complex than text or bitmap graphics diagrams, including states of active simulations (in which control can be exchanged among remote participants), mathematical notations that are linked to graphs that plot their expressions, and layering of annotations on such simulations and notations (e.g., Pea, Roschelle, DiGiano, Schank, & Schlager, 1997). The messages that participants in communications using a shared whiteboard can construct need to be richer, with easy capacity for creating, editing, linking, and displaying drawings, equations, graphs, spreadsheets, and models. We will seek to learn how education might benefit from the concepts, models, and prototypes from business and science groupware applications, and the many emerging "collaboratories" (e.g., [START_REF] Cerf | Nntiorioi colloborntories. Appl!/iris inf'orination teciiriologies fir scrrrif!fic rcscnrcli[END_REF] and platforms for supporting collaborative scientific conversations. We are also concerned with understanding what is to be gained in the wellmotivated use of shared video in these mediarich, networked interpersonal workspaces.

Area Tzcio: Conlnr~irlity hriiiding tools: Beyond ititerest groups. Conlrnlinity-blrilditig tools are those supporting the Web's role in defining social places and virtual worlds for new kinds of interchanges. Examples include: (a) multiuser virtual environments (MUVEs, also called MUDs [multiuser domains] or MOOS [niultiuser domain, object oriented]); (b) community-based information filtering technologies such as userprofiling and recommendation engines, and (c) "intelligent agents" and other tools emerging in business and scientific applications for creating and sustaining knowledge networks. Another entry is (d) "metadata" projects, which aim to order instructional and learning materials by labeling them by types so that they can be sought out in forthcoming Web browsers (using extensible markup language [XML], rather than hypertext markup language [HTML]). How can technology better enable participants to find each other and form collaborative groups around mutual interests, skills, and needs?

Powerful distributed learning environments will need to augment the process of establisliing social places (Harrison & Dourish, 1996; Roseman & Greenberg, 1996) in cyberspace, helping to support the formation and conduct of activities for communities of interest. Socializing is important not only for building trust in teaching but also in mentoring relationships face-to-face; richly textured virtual places will provide diverse activities in which teachers, mentors, and learners can get to know one another in deeper ways than text alone effectively supports. For example, participation in on-line communities offers a unique opportunity for teachers to expand their set of peers and to gain a sense of connection with a practicing community of educators, scientists, and science education researchers (e.g., Honey et al., 1994; Ruopp, Gal, Drayton, & Pfister, 1993). The interactions involved in shared learning are more extensive and subtle than the typical tools for sharing information among interest groups; support is needed for long-term, supportive, structured relationships, not just casual exchange of tidbits, much less "push" media.

Graphically-oriented n~ultiuser virtual environments from the gaming world (MUDs, MOOS) have been the basis of many adaptations for learning purposes, such as SRI's TAPPED IN on-line environment for teacher professional development (Schlager & Schank, 1997). Virtual-lvorld-building companies such as Worlds, TI1 Palace, and Worlds Away are providing graph cally rich and 3D social places in which peopi around the world represent then~selves wit "avatars" and interact at a distance-but lear~ ing and education thus far has not been a foci of these environments [START_REF] Pea | Distributed intelligence and the growth of v i r t ~~a l learning conini~mities over the global Internet. PC97 Keynote Address[END_REF]. On anotht front, new research and commercial develol nients in community-based or social filteri~: technology harness the collective knowledge I all of a Web site's customers to make predictior for each individual visiting the site, for exampl GroupLens, now used by amazon.com and otl ers [START_REF] Resnick | GroupLens: An open architecture for collaborative filtering of NetNews[END_REF]; also see Shardanaud & Maes, 1995 These social filtering tools use profiling inform. tion supplied by participants in order to n~ak recommendations concerning resources othe like them have found useful. Might these too prove extensible from interest groups to learl ing groups? Finally, diverse organizatio~ (including the US. Department of Defense an the White House Office of Science Technolop and Policy) are engaged with EduConi's Ibl Project to further the development of a commo: open-access technical framework of metada' and prototype systems for coding on-line lean ing materials. The planned release of new XMI enabled Web browsers designed to allow codir and search of metadata fields for Web page and the emergence of metadata coding for Wt materials together offer the opportunity bringing unprecedented order to on-line educ tional resources. We conjecture that metada for learning resources will provide importa, support for distributed learning communities.

Area Three: Socio-Cognitive Structuring Too Beyond Scaffolding. The third class of toc involves organizing patterns of activity wi shared active representations in learning cor munities to enhance learning. Throughout h~ tory, great teachers have created participatic structures and progressive sequences th engage learners in posing questions, deep thin ing, seeking diverse viewpoints, creating arg mentation, supporting reflection and revisio~ in thinking, and offering frequent feedback alguidance toward higher standards, The Socral dialogue offers one famous example in whit students learn through progressive questioni~ from an expert. More recent social science and cognitive research have uncovered successful patterns in tutorial, mentoring, and group discussion interactions. Recognizing that typical chat and bulletin board systems do not organize conversation sufficiently for leaming, researchers have created tools such as CSILE (Scardamalia & Bereiter, 1994), the Knowledge Integration Environment (Linn, Bell & Hsi, in press) and CoVis (Pea et al., 1997). These tools all scaffold learning by prestructuring the kinds of contributions learners can make, supporting meaningful relationships among those contributions, and guiding students' browsing on the basis of socio-cognitive principles.

CILT is very interested in integrating the insights from these types of tools and related research into more widely available products that incorporate shared active representations and community building support. At the same time, w e are aware that successful learning does not always fit the predefined categories supported in such tools, and does not always follow preidentified patterns. Thus, we seek ideas for moving beyond the scaffolding of contributions and relationships, to tools that allow teachers and students to dynamically and reactively structure their history of interactions so as to maximize future learning opportunities. For example, we need the ability to capture a session history as students work with shared active representations, so that the session can later be replayed for reflection to encourage higherorder learning in which students become aware of their own process of constructing knowledge. How can we best capture and extract the critical moments from leaming activities?

Research

Participants at the workshop selected seven partnership project concepts: Since the tools for learning communities workshop was conducted, three project proposals have been launched:

1 . Development of the Requirementsfbr n Common Frntnezuorkfbr Collaborative Learning Community Tools. (Project Director: Geoffrey Fox, Syracuse University). Most of the standards processes such as Instructional Management System (IMS) and Institute of Electrical and Electronics Engineers (IEEE) now occurring for educational components are targeted at higher education or, as in the advanced distributed learning (ADL) initiative, Defense Department training requirements. This CILT group has defined a multistage process involving several workshops and public forums that will be used to develop a draft reference document for public review. Its aim is to characterize requirements for tools and systems that support and enable the creation of synchronous and asynchronous collaborative learning communities that are pedagogically and community inclusive, but with special attention to the particular needs of K-14 education.

2. ICSAR: Interoperable Conzponentsfor S h r e d Active Representations. (Project Director: Dan Suthers, University of Hawaii, Department of Information and Computer Sciences). The longrange vision of this group is a set of reusable interoperable components for simulation, animation, graphing, annotation, anchoring discussions, displaying evidence and connecting tools and tutors. As first steps, they may develop scenarios that require such interoperability, to better understand the nature of the problem. They will try to move to a proposal for a testbed to examine the practical details of educational component software. This diverse group of collaborators will perform preliminary needs analyses and prepare for further funding.

3

ClLT PROGRAMS

In this section, we characterize the CILT programs that contribute to the overall mission of the Center: an industry alliance program, a school partners program, and our communications program.

ClLT School Partner and Associates Program

The goal of the CILT School Partner and Associates Program is to link the CILT project closely to schools. We are establishing two-way relationships so that our research agenda is shaped by real problems in real schools and so the results of our research are adapted to school needs and widely disseminated. We will do this on a national basis with schools and organizations that are innovators in SMET and that represent the realities of a cross-section of United States schools.

We have identified two levels of interaction: partner districts and associate schools. Parftier districts are all innovators in educational uses of technology. They have identified project coordinators on staff to coordinate CILT activities. Many of them are close to one of the CILT founding organizations and have ongoing R&D with members of the CILT community. These partner districts represent a broad cross-section of American education with a strong representation of schools serving less-advantaged students, both urban and rural.

In addition, 70 other local education authorities have been invited to be CILT Associates. These districts and associate schools are participating in existing projects such as Concord's Virtual High School or INTEC programs (25 schools) or Pea and Gornez's CoVis Project (45 schools, most with T-1 network connectivity). Thus, these schools have significant technology infrastructure and an appreciation for the ways in which research participation can support their education agendas.

Teachers in partner districts will be involved in our research, and will coauthor papers and related curricula. On-line short courses will be developed as a means of sharing research tecliniques and findings among the teachers and researchers.

ClLT Industry Program

As we have developed the ClLT R&D themes and individual-organizational intellectual resources, we have identified appropriate industry allies for mutually beneficial relationships with the Center from these key computing and communication industries market sectors: (a) hardware (personal computers, servers, small mobile computers, networking hardware-modems to switches); (b) software (server, tool, authoring applications); (c) network service providers; (d) content and activity providers (education, information, entertainment, shopping); (el enabling services (electronic commerce, directory services, Web tracking); and (f) system integrators. In our experience, cost-sharing of Center support needs to develop collaboratively out of joint planning activities conducted by Center leadership and industry leaders.

In its first year ClLT has developed plans, strategies, legal agreements and market~ng materials to promote the CILT Industry Alliance. The emerging two-tier Industry Alliance Program is designed to advance CILT goals and provide additional project funding and instru-mental in-kind resources. Intel has joined as the first CILT Senior Partner in the Industry Alliance Program. CILT agreements with a core group of four or more companies as senior partners should be completed during 1999; a large group of associate partners is also likely. Participating corporations are electing to contribute to the substantive work of the Center through diverse forms of support (e.g., funds, designated staff-on-loan, equipment) while benefiting from commercialization prospects of Center developments and intelligence from the field, better understanding of the education marketplaces, public relations, and advisory board involvement. NSF funding for CILT provides seed support for an initial period of four years and is the basis for a significant opportunity for interested companies to become involved in the CILT Industry Alliance Program. The CILT Industrial Alliance Program offers industries the opportunities to reap the benefits of the Center's wide range of focused R&D efforts, bring industry experience to bear on solving development problems in creating innovative learning technologies, and increase the likelihood for technology transfer (from research to industry and vice-versa).

CILT Communications: From Web Site to Knowledge Network

In pursuing our goals of appropriately serving the learning technology research community that we are networking, we have been designing both information and social structures and strategies. Throughout our CILT invitational workshop activities and partnership project development, we have uncovered fundamental needs for a different effort than the CILT Web site originally planned. In our initial conception, we proposed CILT "dissemination activities" to include a comprehensive Web site to promote CILT activities and make information and tools readily available. We noted that the CILT Web site would be linked to other high-quality learning technology Web sites to promote the wide dissemination of information and provide ready access to CILT-affiliated resources and staff. We also indicated that we would "explore more cutting-edge approaches to bringing our Web-based resources to the attention and use of stakeholder audiences," including social information filtering, and notification services of relevant information by e-mail according to Web site visitors' profiles filled out when they register at our site.

CILT has the aim of developing for widespread use the first national knowledge network for learning technologies. Our long-term vision of this knowledge network and its affiliated networking activities is a coordinated web of organizations, individuals, industries, schools, foundations, government agencies and labs. The network communications revolution has made possible such coordination, and holds considerable promise for scaling u p the quality of research and its influences on educational practices and learning technologies product development. CILT networking is devoted to the production, sharing and use of new knowledge about how learning technologies can dramatically improve the processes and outcomes of learning and teaching. We are inspired by the extraordinarily rapid growth and perceived utility of the knowledge generated not only in scientific collaboratories but by popular networked communities such as amazon.com, where reader-contributed book reviews have provided a highly popular new kind of learning resource-peer reviews rather than expert reviews. Pea (in press) has examined the implications of these and other developments for educational research and its developing a more integral relationship to practice.

CONCLUSION

We have highlighted the challenges facing American education as it seeks to foster improvements in education with learning technologies-the need for innovation in the face of increasing complexity and diversity in forms of computing and communications available for learning, the need for broadly-based partnerships to catalyze breakthroughs, the overly-isolated nature of stakeholder groups, and the importance of coordinating and leveraging field-initiated R&D toward innovations and breakthroughs. CILT provides a national center that aims to be responsive to these concerns. The

  Postdoctoral fellows work closest with one theme team, but also participate in the core Center functions of conducting the School Partnership Program and cross-theme-team research, the Center evaluation, and communication program activities. Each theme team selects one postdoctoral scholar and involves graduate students from one or more institution^.^ 2 The first group of tour CILT Postdoctoral Fellow.s IS st111 in 1 Other theme team leaders include Professors p.llce tormallon as of Decemher 1998, hut i n c l ~~d r s Sherry l i s ~ ~~o g i ~o , Robert grodersen, and p.,,drea disssa (u. (Ub~quitoui C o n i p ~~t ~n g ) , Eric B a i t r n g a r t n i , ~ (Vi-unli/atioi California, Berkeley), Jeremy Roschelle (SR1 Internat~onal), atid Modeling), and %an Brophv ( T r d l n o h g y 'lnd a n d Nancy Songer (University of Michigan).

I

  devices for learning math and science 5. Mathematics, science and technology in elementary education 6. Media case studies of ubiquitous computing in learning.

Framework

  for discourse and capture of shared active representations A testbed for shared active representations Model teacher professional development consortium Communities members' knowledge network Common framework for leaming community tools 6. Reform threshold group 7. Foundations reading group on "learning communities."

  crucial features of o u r Center design for advancing educational reforms aided b y technologies are: Inclusiveness of diverse researchers, stakeholders, schools, a n d learners Synergies created by establishing R&D theme-focused virtual comnlunities that leverage other activities and developments Breadth of substantive contributions by focusing o n R&D themes with the greatest potential for breakthroughs to generate longterm learning gains T h e strategies a n d community-building mechanisms that a r e underway in o u r agenda for CILT will only work practically if there a r e m a n y contributors to the CILT knowledge netw o r k outside of its four founding organizations. In o u r theme-team efforts for CILT to date, w e h a v e b e g u n engaging the collaborative efforts of educators, c o m p u t e r scientists a n d engineers, education researchers, cognitive scientists, a n d subject matter experts throughout the country. The seeds of this process are already u n d e r w a y in the c o m m u n i t y building a n d resource aggregation a n d structuring taking place a t the CILT w e b site. W e welcome wide collaboration, partnerships, a n d insights a s w e g r o w this knowle d g e network enterprise.

  . CILT Knowledge Network. (Project Directors: Marie Bienkowski and Roy Pea). There is no simple way to find out answers to such questions as: Who are the learning technology researchers? What projects are they working on? What reports are available about their findings? Where are the different labs working on learning technologies, and what are the major conferences and journals? Where would 1 go for graduate training in t h s field? What are the innovations underway in the field? and Where is the field headed? What are the findings on what works in integrating learning technologies into education, or homes? What are innovative teachers learning from integrating technology into instruction? Currently there is no coherent community support for these inquiry needs, and at best, a highly splintered infrastructure. The CILT Knowledge Network will not be primarily a digital library, but a social place in which people come to communicate what they are learning about how to advance education with new learning technologies. This work will begin under CILT theme team support and then seek additional grant support.

0 Roy Pea, of SRI International, is Director of CILT. Marcia Linn (U. California, Berkeley), John Bransford (Vanderbilt University), Barbara Means (SRI International), and Robert Tinker (Concord Consortium), serve as CILT's coprincipal investigators. Sherry Hsi (Ubiquitous Computing) and Sean Brophy (Technology and Assessment Models) are among the first group of CILT Postdoctoral Fellows. Jeremy Roschelle (SRI International) and Nancy Songer (University of Michigan) are CILT theme-team leaders.

Roy Pea and Marcia Linn would like to thank the Spencer Foundation for support during their year at the Center for Advanced Study in the Behavioral Sciences, Stanford University, in which they developed the CILT concept with the other authors. CILT is funded by National Science Foundation grant #CDA-9720384. Pea and Linn would also like to acknowledge contributions to this article by the many authors of CILT partnership project proposals, and by theme-team leaders.

The authors thankfully acknowledge Donna Baranski-Walker for her many contributions to developmg the CILT Industrial Alliance PI-ogranl while serving as its Directol-in 1998.

It engages business through an Industry Alliance Program and is also training postdoctoral students. CILT'sfounding organizations are SR1 International's Center for Technology in Learning, University of California at Berkeley (School $Education and