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Fractions as subtraction: an activity-oriented perspective from elementary children. (English)
Sch. Sci. Math. 113, No. 8, 390-399 (2013).
Classification: F42 F43
1
The visualization in geometric figures. Importance and complexity. (La visualización en las figuras geométricas. Importancia y complejidad de su aprendizaje.) (Spanish. English summary)
Educ. Mat. (Mex. City) 24, No. 3, 7-32 (2012).
Classification: C32 G22 D42
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