We’ve all seen a kindergartner can show you five fingers on one hand with ease. But, when you ask them to make five using three fingers on one hand and two on the other, and they’ll often freeze – same quantity, different look, and suddenly it’s a whole new problem. By first grade, that same gap shows up differently: a student who can read every number to 100 with total confidence, but can’t tell you whether 63 or 24 is […]
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