Symmetry
Symmetry: assorted pics of natural symmetry and other stuff.
Symmetry Workshop- Answers to the many objects you looked at in class
Escher Web Sketch for periodic pattern making
Platonic Solids shows how a cube becomes an octahedron or a tetrahedron (click here for looping PowerPoint file)
MOT Lectures (all the lectures are here, contiguous)
Acids and Bases
Bonding
Solids