Abstract: Crystallography plays an important part in a wide range of disciplines, including physics, materials science and technology, chemistry, mineralogy, biology, as well as engineering. Crystal symmetry and symmetric operation require students having the spatial-visualization and imaginary skills, are the keystone and difficulty of the cryptography teaching. To overcome this, in this paper we introduce in some 3D crystal demonstrations based on the CrystalMaker software for the teachers and students, it will make teaching and learning of crystal symmetry much easier.

Key words: crystallographic software, symmetry elements, symmetry operation, crystallography