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A great introduction to expansion and contraction!
Eight-piece human brain model can be disassembled to provide students with hands-on experience exami...
3x/6x magnifier. 50mm diameter, dual lens. Made of acrylic dia. 35 mm two magnifier 3x and 5x built ...
An improved Newton’s Cradle. It demonstrates conservation of momentum and energy pull bac...
Students can watch the sun “tan” the beads and change colors to brilliant pink, oranges,...