US$ 89.00
Complete 12-piece simple machines set covering inclined plane
illustrating molecular symmetry and bonding geometry
the flywheel light enough to drive by breath for hands-on reciprocating-engine study
and block and tackle
Amoeba Proteus Anatomical Model with Extended Pseudopod, 1000x Magnification Material_Hardwood Complete 12-piece simple machines setAmoeba Proteus model at 1000x magnification reveals extended pseudopod, contractile vacuoles, and nucleus for single celled organism anatomy teaching.
US$ 89.00
US$ 287.50
US$ 174.50