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Jacques Chaumette
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Jacques Chaumette created a post,
Alternative method for subtraction regrouping
In elementary school (Germany) I also learned another method (besides the one here: https://www.khanacademy.org/math/arithmetic/arith-review-add-subtract/arith-review-subtract-within-100/v/introduc...
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Jacques Chaumette commented,
I think you should be awarded a low amount for explainatory material, e.g. articles and videos. The problem sets and unit tests should be the real source of energy points. After all, teachers in sc...
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Jacques Chaumette commented,
Good idea, however a bookmarking system could also help.
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Total activity 8
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