Crafting Cognitive Math

How do we learn how much of something makes up something?  We are hardwired to be able to quantify amounts — that tree has more fruit than the other; that river is faster than the one upstream; that basket can hold more corn than that pail — but how is the next step learned between that quantification and the ability to divide, subtract and multiply using cognitive and associate math that even preschoolers can comprehend?

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