Hello all middle school teachers!
I've written an article that gives you a summary of how to go about teaching the four operations with integers, including the usage of the number line, counters, patters in subtraction, the concept of difference, and how to justify the rules for the signs in integer multiplication. You can also watch a video where I show three different models for explaining integer subtraction.
And... I also include two free printable INTEGER FACT SHEETS that you can copy to your students!
~ Maria Miller