In groups, young environmentalists investigate water samples that are contaminated with different types of pollutants. Each group presents their findings to the class and fills out the "Types of Pollutants Chart." This instructional...

Where does the mass for a growing tree come from? Scholars consider a few different hypotheses and guess which is correct. They then analyze data from different experiments to understand which concepts science supports.

In this simple experiment, students learn about the insulating characteristics of soil and how this relates to energy efficiency.

Students make predictions about the erosion of three types of soil. The three soil types contain varying amounts of vegetation. This investigation requires the construction of an erosion table. The activity takes only 45 minutes, but the...