PBS
Pbs Mathline Lesson: Geometry, It's a Perfect Fit [Pdf]
This two-part geometry lesson plan has students identify, describe, and classify two-dimensional shapes. Students engage in hands-on activities including identifying shapes in the classroom, creating patterns with shapes, identifying...
Other
Mark Bishop: Hybrid Orbitals
Cool visual site that shows a 3-D image of the various hybrid orbitals that are possible. Requires the CHIME plug-in to view images.
PBS
Pbs: Mathline: Let's Face It [Pdf]
Check out this math project about polyhedra! Students will enjoy the hands-on activity while they learn about tetrahedrons, hexahedrons, octahedrons, dodecahedrons, and icosahedrons. [Requires Adobe Reader.]
Other
Monterey Peninsula College: Pi Bond
Monterey Peninsula College faculty page simply shows a 3-D image of a Pi bonding orbital. Requires the CHIME plug-in