A number and its opposite form a "zero pair" because their sum is zero. To add integers, create as many zero pairs as possible and then sum the remaining counters. To sum -5 + 3, place 5 negative counters and 3 positive counters. Next, combine opposites to make as many zero pairs as possible. There are 2 negative counters remaining, so -5 + 3 = -2.
Adding Integers using the Brainingcamp Two-Color Counters virtual manipulative.
Brainingcamp virtual manipulatives can be used anywhere with no setup, cleanup, or lost parts. They are highly effective at engaging today’s digital learners and helping them bringing abstract math concepts to life.
Brainingcamp produces virtual manipulatives for iPads, Chromebooks, PCs, and Macs.