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

Used to determine irregular-object volumes by water displacement

exposing the longitudinal and transverse components of wave motion mechanically

Labeled-terminal 50-ohm resistance unit at 7

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.