The Lens Set is an excellent set of 6 unmounted glass lenses with round edges. Each set includes one each of double convex, plano-convex, concavoconvex, double concave, plano-concave, and convexo-concave lens.
These are 50mm diameter.
Learn how solar cells transform light into electrical energy with this great kit!
This smaller transportable Van de Graaff Generator will easily fit in any classroom!
Ever wonder how to survive in the wilderness? These cards can help!
Head into the lab for an in-depth investigation of genetics and DNA!
Learn Chemistry While Creating Sweet Treats
Find the hidden crystals when you open your own geodes from this fun set.