Mudpuppy Playful Patterns magnetic numbers add up to lots of fun—with a boredom quotient of 0! Each set holds 40 numbers or symbols: 3 of each number from zero through nine, 3 plus or times signs, four dashes, and three dots (so you make your own division sign!) Practice adding and subtracting, multiplying, dividing, or simply decorate the refrigerator or any metal surface. You can even try fractions! The full magnetic backing will hold each number firmly in position. Illustrated by Helen Dardik.