Hollow Equilateral Acrylic Prism, 45mm Item Type_Shot Glass this dual-cell model pairs plant

this dual-cell model pairs plant and animal cells side by side to highlight cell wall

Five-pack of 3/4-inch steel marbles

this Van de Graaff generator delivers spark-producing high-voltage demonstrations in the physics classroom

Seven-piece glass prism and lens set at 13mm thickness with all faces polished

telophase — progress across this plant mitosis model for cell division teaching in biology courses

Hollow Equilateral Acrylic Prism, 45mm Item Type_Shot Glass this dual-cell model pairs plantDesigned for liquid fill Snell's law work at smaller scale, a 45mm hollow equilateral acrylic prism holds varied liquids for refraction index by medium investigations.