Amoeba Proteus Anatomical Model with Extended Pseudopod, 1000x Magnification Material_Hardwood One-inch brass ball that threads

One-inch brass ball that threads onto a pendulum string as a heavier metal counterpart to aluminum or steel balls in mass-dependent periodic-motion investigations

Complete 12-piece simple machines set covering inclined plane

illustrating molecular symmetry and bonding geometry

measuring period under different loads to isolate mass from weight

the flywheel light enough to drive by breath for hands-on reciprocating-engine study

Amoeba Proteus Anatomical Model with Extended Pseudopod, 1000x Magnification Material_Hardwood One-inch brass ball that threadsAmoeba Proteus model at 1000x magnification reveals extended pseudopod, contractile vacuoles, and nucleus for single celled organism anatomy teaching.