The magnetic way to demonstrate numbers and operations! Easy-to-manipulate magnetic discs provide whole group demonstration developing number sense. Magnetic foam discs are color-coded according to place value and allow teachers to demonstrate on any magnetic board while students visually track what happens when numbers regroup in addition and subtraction. Also demonstrates multiplication as repeated addition and division as repeated subtraction. Magnetic discs are 2 in. dia. and made of EVA foam with magnetic backing for easy grip and movement. Includes 80 magnetic discs (20 for each of 4 values: 1, 10, 100, and 1,000).