"The Mystery of Lyle and Louise"

1 pound of black sand packaged in a heat-sealed bag.

Lets You Control Location and Depth of Measurements

Bulk hole plates to expand your TeacherGeek collection

For Versatile Optical Applications

Ceramic Ring Magnets have a high resistance to demagnetization and don't need a keeper.

Individual spherical glass lenses.

Makes demonstrations viewable by the entire classroom.

Ideal selection for use with a ray box.

Superior Grade Rubber Offers Softness, Resiliency, and Durability.

Individual spherical glass lenses.

These stoppers are made of a superior grade of rubber that has softness, resiliency, and durability.

These ceramic ring magnets have an inside diameter of 35 mm and an outside diameter of 45 mm.

This tubing is made of red rubber.

Educational Materials, Accessories, Application: Physics, Hand-crank Van de Graaff generator, replacement belt set