**+**signs, and the rest is filled in with

**-**signs as shown. Reading along the top line for example, is a visual tool for students to see that a positive number times a negative number equals a negative number. It works for division too. Going down from the upper left corner, you will see that a positive number divided by a negative number equals a negative number. Reading along the diagonal you will notice that a positive times a positive equals a positive. This works reading the tool backwards/upside down too! The top row backwards would indicate that a negative number times another negative number equals a positive number. Most of my students have found this simple visual strategy helpful when working with integers. I notice it on homework assignments all the time.

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