Description
5-3V DC for hands-on motor-action work
the diverging curvature producing virtual upright images for refraction work
Length-adjustable wooden pendulum simple-machine model with a blue bob sliding along the string and a wooden guide keeping the swing on a consistent path for period-vs-length measurements
brain anatomy
Volcanic System Teaching Model State_Solid 5-3V DC for hands-on motor-actionHand painted volcanic system model on a 75 by 100 cm wall mountable backboard, demonstrating how eruptions unfold and what structural conditions trigger them, with each feature labeled.
Exchange/Return Notes
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