Do you ever think that you students pay more attention to what you are wearing than what you are teaching? Why not use that to your advantage with wearable posters!
These 100% cotton black t-shirts explains how to add integers with the same sign, Add integers with unlike signs, and Multiply and Divide. You have the choice to print this on the front or the back of the top.
The top is a Gildan Softstyle in Unisex sizing.