Math Gear: Fast Facts - Multiplication - Tapa dura

Reseña del editor

Math gear is the only tool kids will ever need to learn math facts in a flash. With their high-tech, gadget like look and feel, kids wont hesitate to tuck them into a pocket or clip them to a backpack! Turn the wheels to solve a math problem, guess the solution, and then lift the top to see if you are correct.