An empirically-based trajectory for fostering abstraction of equivalent-fraction concepts: A study of the Learning Through Activity research program
2018 ◽
Vol 52
◽
pp. 134-150
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2018 ◽
Vol 52
◽
pp. 188-200
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1994 ◽
Vol 58
(11)
◽
pp. 836-839
1998 ◽
Vol 66
(2)
◽
pp. 423-428
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