"orange de méthyle"

Teach About Gravity

A set of 15 samples of different materials used to challenge students to identify materials based on measurement of their density. For some specimens this will be straightforward. In other cases, it will lead to a discussion of uncertainty in measurements and data, and to an awareness that different materials may have nearly the same density.

Nearly frictionless, accurate, durable.

Explore Force, Acceleration and Hooke's Law. No tools required.

Easy-to-assemble intermediate-level rocket with laser cut balsa fins.

Launch an egg and test recovery systems with this reliable, sturdy model rocket.

Variable Speed at Your Fingertips

Unlike traditional pendulums, the Kater's pendulum center of gravity does not have to be know in order to determine the acceleration due to gravity.

Close-Up Cross Section.

This balance is the first major advancement in teaching simple machines in decades.