Hand-Painted 3D Starfish Sectional Anatomical Model on Base, 18 x 16 inch Light & Optics_Spectroscopy exposing the longitudinal and transverse

exposing the longitudinal and transverse components of wave motion mechanically

Fullerene C60 kit with 60 atoms and 90 bonds for building the spherical cage structure characteristic of fullerene carbon allotropes

demonstrating mechanical advantage as the angle of incline changes the effort needed to roll the cart up the slope

Labeled-terminal 50-ohm resistance unit at 7

Graphite lattice kit whose atoms and connecting rods assemble into planar carbon sheets

Hand-Painted 3D Starfish Sectional Anatomical Model on Base, 18 x 16 inch Light & Optics_Spectroscopy exposing the longitudinal and transverseThree dimensional starfish sectional model reveals echinoderm anatomy, water vascular system, and radial symmetry for marine biology teaching.