This is a great activity for mastering addition and subtraction of integers. It is similar to activities where you would pull cards or roll dice but the kids get to create expressions that look like what they would see in a real math problem including "minus a negative" problems. Directions are on the last page.
What you will need:
Integer Activity Cards (preferably printed on card stock and laminated)
Number Cards and Sign cards (preferably printed on card stock and laminated)
Wet erase markers
1 calculator per pair of students