Learners explore permafrost.  In this 3 states of matter lesson, students identify characteristics of solids and liquids.  Learners observe water and soil melting and freezing at various temperatures.  Students make...

Ninth graders discover the reasoning behind spraying water on fruit and seedlings in preparation for hard freezes. In this conceptual physics lesson, 9th graders conduct an experiment to measure the heat released when water goes from a...