I never want to teach another child and leave them in the same place I was for so many years. Subtraction with Regrouping Using Manipulatives This is a guest post from Rachel of You’ve Got This Math. * Please Note: This post contains affiliate links which support the work of this site. I could cross numbers out and carry numbers all day, but it wasn’t until I sat down with blocks that I truly understood why I was doing all that. You see, I knew how to subtract with regrouping. And I was a little nervous about teaching math. But as I played with those base ten blocks that day a foundation would be laid that would change everything. The instructor proceeded to inform us how to teach subtraction with regrouping using base ten blocks. Though he was there to teach me how to teach a concept, he actually brought an understanding that hadn’t happened in years of schooling. I was sitting in a college teaching class, and the base ten blocks came out.
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