This is the sort of thing that has people freaking out about Common Core. Once someone understands numbers, they can flit through alternate options and pick the easiest one. But it’s too hard for many current teachers (and parents!) who were pistol-whipped into doing everything the old way all the time always.

Husband & retiree. Developer, tech writer, & IT geek. I fill what’s empty, empty what’s full, and scratch where it itches. Occasionally do weird & goofy things.

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