Double Concave Optical round Lens, Material: Glass, designed for physics and educational uses, Because of their educational use design, there may be minor imperfections that do not affect physical function, Size: 250mm focal length, 50mm diameter and 3mm thick
Friction Pad DTS to your Vernier, Standard Cart, Plunger Cart, or Motion Encoder Cart, and watch the carts move under very consistent friction force. Setting the friction amount is as simple as turning a knob
Kidder Gear System, There are enough materials in this classpack to make 12 kits, Requires minimal drilling, cutting and gluing, students will have an understanding of the basic principles and which gears modify the speed and direction of, and the force exerted on moving objects
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
Missing Money Mystery Re-Supply Kit, Includes all the essential supplies needed to run the Missing Money Mystery Course, with Acetate, Cotton, Nylon and Wool Fabrics, Small sand sample, Brown Paper Bags, Clay soil, Sandy Soil, Loam, Plaster of paris