Comparative Mechanics Ball Set, 4-Piece (Aluminum, Brass, PVC, Steel) Subcategory_Entomology Supplies supplied in five colors at

supplied in five colors at two leads per color so paired wiring stays color-coded across both sides of a circuit

Used to isolate Gram-negative bacteria and differentiate lactose-fermenters (pink colonies) from non-fermenters (colorless)

Twin conjoined fetal skulls join a single rod-mounted skeletal body

Half-size digestive system model fits smaller class benches while preserving the full esophagus-to-rectum path and accessory organ anatomy in two removable parts

visualizing the forces at play during thermal contraction

Comparative Mechanics Ball Set, 4-Piece (Aluminum, Brass, PVC, Steel) Subcategory_Entomology Supplies supplied in five colors atComparative mechanics set of four spheres aluminum, brass, PVC, and steel for quantifying how material, mass, and density influence momentum transfer in collision experiments.