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Journal Article

Stargazing in Your Classroom

When taking students outside to see the stars is not an option, teachers can bring the stars inside the classroom. These instructions for building a portable planetarium also include suggestions for cross-cultural and social studies connections....

Journal Article

Science 101: What Causes Water's Surface Tension?

The term “surface tension” is commonly used to explain phenomena like a paper clip resting on the surface of water or the “dome” of water that forms on a penny when water is carefully added to it drop-by-drop. You can also see surface tension...

Journal Article

Commentary: A Testable Prediction

An opinion piece about the definition of "hypothesis." ...