US$ 1245.00
5-3V DC for hands-on motor-action work
Used to test how mass per length controls pitch
and Moon on repositionable rods
Wide sound-radiating surface on this lightweight tuning fork lets it stand upright on its own footprint
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.
US$ 1245.00
US$ 204.50
US$ 632.00
US$ 90.00
US$ 502.00
US$ 374.50
US$ 207.50
US$ 632.00