3 Years to adult
10 Colorful Pieces...manipulate these into creative forms
For the engineer or puzzle fan, 9 to adult
The natural finish woodgrain version of TETRA is easy to manipulate into different sculptural forms but difficult to form into a Tetragon. It comes as 20 attached balls in a single plane, to be solved
Not difficult--but involved--meditative, and an ornamental work of art.
The completed puzzle is a model of the Carbon (C60) molecule commonly referred to as a Buckyball (definition: a ball-shaped hollow sphere made of 60 carbon atoms located at the corners of the polyhedral structure consisting of pentagons and hexagons).
Carbon is an incredible element and the key ingredient for most life on Earth. Arrange carbon atoms in one way, and they become soft, pliable graphite. Re-jigger the arrangement, and the atoms form diamond, one of the hardest materials in the world. In 1985 a new form of carbon was found-- scientists created a mysterious new molecule made of pure carbon. This molecule turned out to be a ball-shaped hollow sphere made of 60 carbon atoms located at the corners of the polyhedral structure consisting of pentagons and hexagons. It was named the buckminsterfullerene after the architect who designed geodesic domes. The molecule, resembling the shape of a Soccer ball, is now more commonly known as the "buckyball"