Oligoclase Specimen US-Unavailable and cuboid — for spatial-reasoning

and cuboid — for spatial-reasoning work from early grades into calculus visualization

Earth science crystal growing kit demonstrates mineral formation through supersaturation

and vestibular structures for small-group demonstration of hearing mechanism

Heavy-duty conical filtering flask in borosilicate glass holds 2000mL with integral plastic side arm for vacuum filtration procedures

including staining bacterial cells to examine their morphology

Oligoclase Specimen US-Unavailable and cuboid — for spatial-reasoningSodium calcium plagioclase feldspar with fine albite twinning visible under magnification, supporting identification within the plagioclase feldspar series.