Magnetic Earth Field Model, Use it as is or place it on an overhead projector to show the whole class, Iron filings are suspended in oil to allow the included magnet to align them to its field
Cloud Formation Apparatus, fun and interesting way to demonstrate the principles behind the formation of clouds without ever leaving the classroom, Components: Side arm with Pinch Clamp and Rubber Hose, Flask, Rubber Bulb, use only in a laboratory