Hands-on write-on/wipe-off mats for visualizing operations with positive and negative numbers. Students model integer problems using red and yellow counters or writing on the mat. Use the space at the top to write the equation, and record the operations on the number line at the bottom. On the reverse, use the vertical number line to show negative and positive numbers.

Set includes 10 write-on/wipe-off mats and full-color activity guide. Mats measure 10 x 13.