Need to know where your class' knowledge stands? Use these pre- and post-tests to determine your learners' knowledge about nano membranes and nano filters in relation to the filtering of water, specifically contaminated water.  

A series on environmental engineering introduces the class to issues that environmental engineers work to solve. This first lesson focuses on air and land issues, and looks at ways to reduce pollution.

The liquids did not mix — so what do density columns have to do with it? The seventh part in a series of nine provides the theoretical explanation of why density columns do not mix. The lesson covers the topics related to...

In this eighth-grade science standardized test practice activity, pupils answer 78 multiple-choice and short-answer questions to review their knowledge.

In this post assessment activity students review points covered in the attached unit and reach conclusions regarding the importance of water to human health. Student sheets are provided in English and in Spanish.