Through an instructional video, games, and activities, students explore three types of change matter makes: physical change, in which only the shape of the matter changes; physical phase change in which matter changes to a different form...

This lesson plan from the Illinois Institute of Technology incorporates observation with hands on activity through various stations.

Great animations showing how sound is produced.

This site provides a lesson plan designed for primary students over a three week period. Students learn concepts of vibration, communication,and pitch.