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

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

and block and tackle

3 glass with excellent strength against breakage

measuring period under different loads to isolate mass from weight

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.