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Ma, Xiaojun; Bofferding, Laura; Xin, Yan Ping – School Science and Mathematics, 2021
One of the factors associated with the less than positive mathematics performance of American students could be poorly designed textbooks that fail to facilitate the development of critical mathematical ideas. This study examined two reform-based textbooks (Go math! and Investigations) in reference to essential, mathematical big ideas emphasized…
Descriptors: Addition, Subtraction, Mathematics Instruction, Educational Change