Description

Potassium aluminum sulfate (alum) (25g)

Wooden-framed abacus with two steel wires of 20 beads each on a 13

Technology seamlessly runs play time into learning

students will investigate the properties of a super-absorbent polymer

Concave Half-Cylinder Stainless Steel Mirror for Ray Box, 6.25 x 2.875" Clearance Potassium aluminum sulfate (alum) (25g)Built to slot into a ray box for tracing converging reflection paths, a concave stainless steel half cylinder mirror at 6. 25 by 2. 875 inches and ~1mm thick provides the curved surface.

Exchange/Return Notes

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Concave Half-Cylinder Stainless Steel Mirror for Ray Box, 6.25 x 2.875" Clearance Potassium aluminum sulfate (alum) (25g)

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