Step-by-step, arrow-by-arrow, viewers are walked through the rock cycle. In the end, you have a simple, yet complete diagram of the process. Pictures appear to show samples of igneous, sedimentary, and metamorphic rocks. The presentation...

Introduce middle school science learners to condensation with this presentation. It begins with a brief explanation of the process and humidity, but does not present all of the details. Three demonstrations need to be set up ahead of...