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- catalog contributor b3904440.
- catalog contributor b3904441.
- catalog created "[1990?]".
- catalog date "1990".
- catalog date "[1990?]".
- catalog dateCopyrighted "[1990?]".
- catalog description "Includes bibliographical references (p. 7).".
- catalog extent "7 p. ;".
- catalog isPartOf "Reports and papers in progress (Education Development Center. Center for Learning, Teaching, and Technology) ; no. 90-1.".
- catalog isPartOf "Reports and papers in progress / Center for Learning, Teaching & Technology ; report no. 90-1".
- catalog issued "1990".
- catalog issued "[1990?]".
- catalog language "eng".
- catalog publisher "Newton, MA : Center for Learning, Teaching, and Technology,".
- catalog subject "Computer-assisted instruction Research.".
- catalog subject "Mathematics Computer-assisted instruction Research.".
- catalog subject "Mathematics Study and teaching (Primary) Research.".
- catalog subject "QA135.5 .C42 1990".
- catalog title ""Click on the clock" : formative research in the development of mathematics software for young children / Cynthia A. Char.".
- catalog type "text".