Fourth graders use candy to make a comet. In this lesson, 4th graders examine the role comets have played throughout history, students watch NASA videos about comets and complete the lesson by making an edible model of a comet. This...

To better understand how solar power can aid in creating desalinated drinking water, the class creates a model still. They will build a model of a solar still, make observations, and discuss how the process works. While the idea behind...