These easy-to-manipulate discs provide hands-on practice for developing number sense. Color-coded according to place value, the foam discs allow students to visually track what happens when they regroup numbers in both addition and subtraction. They help illustrate that multiplication is the same as repeated addition, and division the same as repeated subtraction.Details:Assorted colors1" diameter (1/8" thick) each1500 discsPackaged in re-sealable poly bag for easy storageMade of EVA foamRecommended for ages 6-10