This 3D magnetic building set STEM-ulates young minds by fusing together math, science and creativity. Translucent, colorful shapes including squares, rectangles, and triangles (equilateral, right, and isosceles) spark hours of imaginative free play in children. Anything they can dream, they can create! This activity develops math, science, spatial and tactile skills. WOW! on Wheels offers the original 100 piece set as well as the car and rectangle expansion set for your classroom use.