US schools are adopting the method, which emphasises problem-solving over rote memorisation, following its success in international test scores
Imagine you’re a character in a maths problem. You have three platters, but two cakes. All three platters need to have the same amount of cake. How would you split it?
Without even saying the word “divide,” a group of about 20 teachers from private schools spanning Pennsylvania, Maryland and Virginia, stacked cubes and folded notecards to find solutions. The answer? Two-thirds of a cake per platter. But the problem doesn’t end there.
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