Create and identify crystal shapes commonly found in minerals! Students use transparent pre-cut heavy-duty plastic to construct models of the six basic crystal shapes-cubic, tetragonal, orthorhombic, hexagonal, monoclinic, and triclinic. Students then measure the length of the axes and the angles formed and relate the measurements to the basic crystal shapes. An excellent math and science activity. Kit includes ten sets of six different transparent models, goniometers and detailed teacher and student instructions.