Pyramid Power Brainbuster Puzzle
A mystery wrapped in a riddle, stuffed in a mesh-bag. Can YOU build all 65 unique pyramids? 65 different tetrahedra from a mere handful of parts; this mathematical riddle is rooted in the wisdom of the Babylonians, the Egyptians and the Greeks. Solve the mystery of the ages. Zometool is 100% made in the USA using wind-powered electricity and kid-safe materials. All Zometool kits are guaranteed for life: we replace broken parts for free.