Perceptually rich manipulatives reduced conceptual errors (children set up the math problem correctly) but increased other types of errors (e.g., calculation errors). Detailed manipulatives draw attention (which helps) but then may direct attention to irrelevant details
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Helping a child understand the idea of fractions by dividing a circular pizza or pie works well until you encounter a fraction with the denominator 9. Or 10,000
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students learned the concept more quickly with the familiar symbols, but transfer to different problems was better with the abstract symbols
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JUMP Math, a teaching method that's proving there's no such thing as a bad math student... - 0 views
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Mighton has identified two major problems in how we teach math. First, we overload kids’ brains, moving too quickly from the concrete to the abstract. That puts too much stress on working memory. Second, we divide classes by ability, or “stream”, creating hierarchies which disable the weakest learners while not benefitting the top ones.
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But too many children don’t have the building blocks from which to discover the answers. They get frustrated, and then fixed in the belief that they are not “math people.”
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When I pause, even for a second, Mighton apologizes and says he clearly hasn’t explained it well, and takes another stab at it a different way.
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