this post was submitted on 18 Oct 2024
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Don't be mean. I promise to do my best to judge that fairly.
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To add to this, people come up with math tricks all the time but you then have to check it against the manual method, and often multiple times with different numbers, before you can connect the manual process to the trick for later use.
In my opinion I don't think you can teach just the trick side of it, if thats what common core is.