Magna-Tiles Solid colors 100 Piece set includes: 50 small Squares, 4 large Squares, 15 Isosceles Triangles, 11 Right Triangles and 20 Equilateral Triangles These tactile, colorful opaque Magna-Tiles are sized just right and easy to use, whether creating designs on a flat surface or building in 3-D. basic shapes are learned through play. Magna-Tiles develops patterning, shape recognition, building and motor skills. use them for guided activities or hours of open-ended fun and exploration. They will work well alone or together with the clear colored Magna-Tiles to make windows, skylights, etc. perfect for classrooms and multi-child play.