Description Integer Operations Activity Set Contains proven techniques to help students better understand abstract mathematical concepts! This set includes 10 Integer Operations Mats, 200 two-color counters, and an activity-packed book - Working with Two-Color Counters. Easily demonstrate integer operation problems on the mats with the two-color counters. Go to the book for a variety of integer activities, as well as problems that focus on fractions, equations, and probability, all using the counters. A great resource for all middle-school classrooms Didax 211891