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!
Build a magnetic levitating train with this science fair project kit!
Build over 100 exciting electronic projects with this easy to use kit!
The Ball of Whacks is the perfect creativity tool for innovators, artists, engineers, writers, students, and you!
This classic device is used to demonstrate the conservation of mechanical energy.
The Hoberman Sphere expands and contracts with a magical motion so fluid and simple that kids can't help but play with it for hours.
View the glory of space with this hi-tech telescope set!
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