@Mr_AlmondED @lil_on_sea I found the chapter by Ma and Kessel in this book interesting https://t.co/XuTwYTofRg. Helps to understand when multiplicand x multiplier would be used over factor x factor. It relates to the differences between equal groups, mult
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it is downloaded 244 thousands.https://t.co/obxgakfvg7 you may have one for free here. https://t.co/NNR5d5gKqS
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歴史が分からない人はこれだけでも読んで Ma, L. & Kessel, C. 2018. The Theory of School Arithmetic: Whole Numbers. In Bartolini Bussi, M.G. & Sun, X.H. (eds.), _Building the Foundation: Whole Numbers in the Primary Grades_ (New ICMI Study Series). Springer. https://t.
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it is downloaded 228 thousands. you may have one for free.