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1.

図書
図書
1. Bulletin board ideas for elementary and middle school mathematics
Seaton E. Smith, Jr
出版情報: Reston, Va. : National Council of Teachers of Mathematics, c1977
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2.

図書
図書
2. Games and puzzles for elementary and middle school mathematics : readings from the Arithmetic teacher
edited by Seaton E. Smith, Jr., Carl A. Backman
出版情報: Reston, Va. : National Council of Teachers of Mathematics, [1975]
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