4-Metal Density Block Set (Aluminum, Brass, Copper, Steel), 1.25" Subcategory_Electricity and Circuits and tentacle structure for invertebrate

and tentacle structure for invertebrate teaching

exposing the triangular rotor's epitrochoidal motion with a lamp-lit ignition point

Shows oxygenated and deoxygenated blood paths between heart chambers and alveolar surfaces through seven hand-painted removable parts designed with medical-professional input

sized for ripple tank and bulb-driven physics demonstrations

4-Metal Density Block Set (Aluminum, Brass, Copper, Steel), 1.25" Subcategory_Electricity and Circuits and tentacle structure for invertebrateAluminum, brass, copper, and steel cubes machined to the same 1. 25 inch edge, letting students compare four densities by mass alone while the volume is held constant across the set.