Discover Magformers® Window Plus 20 Piece Set, and build a cube, a small house and a small 'magic ball.' This set is a perfect introductory set for budding builders to learn the pull -up tricks and begin to be able to construct in 3D. Set includes 2 different geometric shapes in several different colors, and an 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.