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  • Aaron Davis

    October 5, 2020 at 12:22 am

    When I think of proportional reasoning I usually just think of fractions, percents and ratios. The idea of scaling down and up makes complete sense because we do it all the time, especially when I try to help my little kids grasp the idea of really big numbers and measurements. The idea of building spatial reasoning by decomposing shapes and numbers makes complete sense to me now with how it relates to proportional reasoning. This is what we mean when we ask our kids to be flexible number thinkers (i.e. compose and decompose numbers) and then eventually unitize numbers or groups in different ways). I love this.