The Hoberman Sphere™
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Product Number: TB18334M Price: $23.50 |
PRODUCT DETAILS
Combines mathematics, science, and technical education into a magical motion of surprising simplicity, beauty, and fun. Its system of polymer links expands and contracts almost effortlessly, changing in volume 30 times. A great tool for teaching physical science and technical education. Expands from 9-1/2" to 30". Grade 1 and up.
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