You can use this rubber stopper to contain liquid in test tubes and flasks. Fits tightly to prevent chemical leaks. Highly recommended for use in the science classroom or when displaying a science project!
Discover a world of kaleidoscopic effects within this perfectly clear prism of the Light Crystal!
This SUPER Erector Construction set is one of the best you'll find anywhere!
Easily assemble a working alarm motion detector!
Build a hand that realistically moves its fingers using shape memory allow technology!
A touch of joy. A touch of science. Light responds to your touch and to the music in your room!
Experience this sphere powered by the sun!
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