Students were quick to understand the concepts of regrouping when subtracting double-digits, based on the concrete representation of the base ten blocks. We pretended that the blocks represented money - a ones block is a $1 bill and a tens block is a $10 bill. If we have two $10 bills in our wallet, and someone wants to borrow $6, we would clearly have to break a $10 into ten $1s.
No comments:
Post a Comment