Half-Size Human Circulatory System Model, Compact Gifts_Bar fanning apart visibly when a

fanning apart visibly when a charged rod approaches to demonstrate electrostatic repulsion and induction

Walks students through four-stroke diesel operation on a 16-inch hand-cranked model

Meker-style natural gas burner delivers a broad

Bulk 144-pack of pre-cleaned 75 x 25mm glass microscope slides features frosted labeling ends and ground polished edges for high-volume teaching labs

Drops a dense object and a feather together inside a 20-inch evacuated glass tube

Half-Size Human Circulatory System Model, Compact Gifts_Bar fanning apart visibly when aSized for compact classroom display, the half size circulatory model traces arterial and venous pathways from heart to peripheral capillaries.