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  • Cary Mallon

    December 23, 2021 at 6:43 pm

    A day after I wrote that, I was thinking the same as you. “A lot” of multiplicative comparisons are of measured quantities, but not all. Although, when asking kids to create a context that can be a multiplicative comparison, I think if you tell them to use something measured, they are more likely to use the same units.