In previous posts, I have been writing about teaching problem solving (here, here and here). This post describes a strategy that appears counter-intuitive, until you think about what you really want your students to learn.
from AQA Jun 16 Physics A-Level Unit 2 Paper
When you use this question in class, which of the following learning goals is most important to you:
A: learning how to solve this type of problem
B: finding out how much vertical supporting force the rock really supplies.
I’m assuming that you don’t really care about the answer to the question.
When you set this…
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