This is not your ordinary sphere. By lightly grabbing two ends of the sphere and pulling, you can make it expand from 5.5 inches to a whopping 12 inches! The Mini Hoberman Sphere is a great way to have fun and teach adults and children about geometry at the same time. The sphere includes a game and activity sheet to help you explore all kinds of interesting ways to use it!
This classic desk toy will keep you amused!
Great reference card for chemistry and physics students.
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.
Build your own 10 inch kaleidoscope with this great kit!
This genuine meteorite is great for the rock collector in your family!
This project book and sample kit introduces you to shape-memory alloy technology!
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