How can removing water change the color of a substance? Lab partners remove the water of crystallization from hydrated copper (II) sulfate, record their observations, then rehydrate the solid. The resource is printable and contains ideas...

Mold your learners into materials engineers. Using glue, Borax, and water, scholars create a viscoelastic material. But your class might know it by another name—Silly Putty.

The Alaskan wilderness contains every imaginable element of the water cycle: it has flowing streams, cool spring rain, and frozen glaciers. Pupils use a series of worksheets to identify and define evaporation, condensation, and...