To demonstrate principles of light and reflection. The reflector features three front-surfaced triangular mirrors mounted at right angles to one another on a hardwood base. Light beams hitting any of the mirrors from any angle are bounced off the other two mirrors and reflected back in the same direction they came from. With instructions.

To demonstrate basic principles of light and color. The kit contains a double convex lens, a double concave lens, a plain lens, a clear glass screen, a glass mirror, a white plastic screen, 4 cellophane squares (4 colors), 3 lens/mirror supports, an acrylic equilateral prism, graduated plastic beaker, candle, and flashlight. They are packed in a reusable storage case. Complete with instructions.