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This is an activity (located on page 3 of the PDF under Water Clean-up Activity) about the use of reduction agents to decontaminate ground water.

Through a series of simple body movements, learners gain insight into the relationship between time and astronomical motions of Earth (rotation about its axis, and orbit around the Sun), and also abou

In this activity, pairs of learners will create two make-believe dig sites by burying chicken bones in plaster of Paris--a powder that hardens when wet.

Historically, sea floor mapping (bathymetry) was done by soundings.

This guided inquiry three-part activity engages learners in thinking about the mechanism of natural selection by encouraging them to formulate questions that can be answered through scientific investi

In this thought-provoking activity, learners plan a hypothetical project to build and operate wind turbines in their community.

MarsBound! is an engineering simulation activity in which learners use realistic techniques to plan a mission to Mars.