Magna-Tiles combine magnets, science and fun! Thin geometric shapes feature magnets on the edges that always attract to other pieces, even when the pieces are flipped around. This allows for using 2D pieces to create 3D objects. The small size is great for little hands. Magna-tiles are also helpful for teaching pattern and shape recognition; symmetry; fine motor skills; sorting & stacking; and even magnetic properties. 100-piece set contains 50 small squares, 4 large squares, 20 equilateral triangles, 11 right triangles and 15 isosceles triangles. For ages 3 and up.