Perfect for whole-class demonstrations and hands-on learning, our giant magnetic shapes make math concepts easy to see…and easy to understand! The 81 big, dense foam pieces are a cinch to grab and manipulate, and they stick to any magnetic surface—providing concrete practice with everything from composing shapes to partitioning shapes into quarters, halves and more! Plus, each geometric shape is clearly labeled with its name. Largest rectangle measures 8". Magnetic board sold separately.