12-Piece Mystery Density Activity Set for Material Identification Glassware_Glass Funnels the f/2 geometry combining a

the f/2 geometry combining a wide light-gathering face with moderate throw for projection and image work

where colored liquid in a U-shaped section shifts measurably as air blown through a constricted glass tube creates pressure differences

o Color fringe adjustment

A pair of pointer electrodes are supplied with the instrument

and pistil anatomy for botany teaching and flower morphology identification

12-Piece Mystery Density Activity Set for Material Identification Glassware_Glass Funnels the f/2 geometry combining aChallenges students to identify two hidden materials from a set of 12 mixed cylindrical bars, revealing two distinct linear mass volume relationships when graphed at identical diameters.