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@snacktraces

I've heard teachers complain "my students put things like 6*8 in the calculator"

I always think "so?" I mean if they know it's around 50 and are worried they've mixed it up with some other fact why does it matter?

You are teaching calculus who cares?

(It's 4 ... 12s which is helpful if you know the 12s but if you didn't learn them young... anyway it's kind of a distraction from the problem at hand. Get the correct result. Use the tool. )