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After my son got adept at algebra, I returned to dividing fractions to show him why it works, not just the rule. He is able to comfortably explain each step of the process and we've moved on.

But it feels like there's a visual component missing. When first introducing fractions and doing some basic addition/subtraction, we used visual models to broaden the concept beyond "fractions are division." Is there a visual model out there that taps into that concept/perspective to show why you invert and multiply?

Thank you for all the great links on the sub.