Hand-Painted 3D Starfish Sectional Anatomical Model on Base, 18 x 16 inch Light & Optics_Spectroscopy demonstrating mechanical advantage as the

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

exposing the longitudinal and transverse components of wave motion mechanically

with both 4mm stackable sockets and screw terminals so leads wire in without an adapter to either bench standard

and membrane systems for introductory cell biology teaching

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