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Contains 15 specimens, approximately 1 1/2″ x 1 1/2″, number-coded in a compartmented container.
Great for use in both lectures and hands-on activities! This unit consists of an acid-proof, non-por...
A great introduction to expansion and contraction!
This little yet powerful motor is ideal for hundreds of electrical experiments and projects! The mot...
Lets your students actually observe increases and decreases in a liquid's conductivity!