Commission Internationale de l'Enseignement Mathématique. Discussion Document for the Twenty-third ICMI Study. Primary mathematics Study on whole numbers
2015 ◽
Vol 61
(3)
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pp. 505-517
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2014 ◽
Vol 86
(3)
◽
pp. 307-309
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Brief Reports: Textbook Pictures and First-Grade Children's Perception of Mathematical Relationships
1978 ◽
Vol 9
(5)
◽
pp. 368-374
2002 ◽
Vol 34
(5)
◽
pp. 229-239
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