Minus Times Minus Is Plus: The Reason for This We Will Discuss

We know that negative times negative is positive, but why? Come learn how to extend common models for integer operations, like Floats & Anchors, chips, or number lines, to help your students make sense of multiplication and division with signed numbers. Find out how supportive models for integers can set the stage for topics in algebra and beyond.

6 to 8

Building Mathematical Knowledge for Teaching