M.C. Escher eat your heart out! Part brain teaser, part paper engineering, this compelling kit is like brain food for idle fingers. Easily assembled 3D models are each composed of pre-cut cards that once folded, fit cleverly together to make a spectacular geometric form. Clear instructions are provided for a variety of projects including a 12-sided animal geodesic sphere, a dodecahedron that inverts when tossed into the air (just add magnets!), and an intricate pyramid that contains a secret chamber. Hours of fun for puzzle lovers and paper nerds!