With Fractions, Common-Core Training Goes Beyond 'Invert and Multiply' - Curriculum Matters - Education Week


When I think about blog posts I regret, maybe only one comes to mind: a post I wrote about explaining the "invert and multiply" of fraction division. I showed some kind of proof that really doesn't do much explaining. This post at Education Week does a better job, but I still have some diagrams and explanations in mind that go beyond what's shown here. I don't know how helpful they'd be to others, but maybe I'll finally make that post someday to relieve myself of a guilty conscience.