Covers the geometries and symmetries of the seven crystal systems in an inquiry-based manner. 2-D paper templates are provided, which the students cut out, fold, and tape together to create 3-D representations of the seven crystal systems: triclinic, monoclinic, orthorhombic, tetragonal, rhombohedral, hexagonal, and cubic. The students can then use these to determine the geometries and symmetries of the systems for themselves.
In this activity, a student will:
- Determine the geometries of the seven crystal systems.
- Identify the following symmetry elements in a 3-D system: rotational axis and mirror planes.
printouts of the templates
tape (recommended) or glue