Create 3D structures from 2D nets with the Rainbow 50 Piece Set. Learn to build tetrahedrons, cubes and octahedrons as well as houses, towers and even the "magic ball." Learn a unique way to build using combine, roll and pull-up techniques and see what amazing things your imagination can create! Each geometric shape contains magnets that never reject so you'll always hear the Magformers® click. When playtime is over, use the magnetic power to simply stack and store for easy cleanup. Set includes Set includes 2 different geometric shapes in several different colors, and a step-by step idea booklet. . Recommended for children ages 3 and up, this set is made with BPA free plastic, and is compatible with all Magformers® shapes and accessories. A fun toy for S.T.E.M learning.