Unit Plan
Annenberg Foundation

Annenberg Learner: Virtual Particle Lab: Compressibility of Air

For Students 2nd - 5th
Explore the particle model of matter. Run the simulations and see if you can predict the results.
Lesson Plan
American Chemical Society

Middle School Chemistry: Chapter 1: Solids, Liquids, and Gases

For Teachers 9th - 10th
Five exemplary chemistry lessons about the three states of matter complete with handouts and animations.
Interactive
Other

Fear of Physics: Sound

For Students 9th - 10th
Great animations showing how sound is produced.