US$ 135.00
bundle sheath
Hand-cranked 4-stroke gasoline engine model at 13
letting students trace renewable-energy conversion step by step
Wooden-frame abacus on a 13
14 push buttons
12-Piece Steel Extension Spring Set, 6-9" Physics_Force & Motion bundle sheathTwelve spring steel extension set paired across six size combinations with looped ends, offering a spread of spring constants for simultaneous comparison in oscillation and Hooke's Law experiments.
US$ 135.00
US$ 110.00