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In this activity related to magnetism and electricity, learners discover that a magnet falls more slowly through a metallic tube than it does through a nonmetallic tube.

In this 7-10 day investigation, learners develop an understanding of waves and tides and their motion through discussion, demonstration, and hands-on activities.

Learners model the ocean currents that carry hot water from the tropics to northern latitudes.

In this quick activity, learners observe how wind creates ocean currents.

In this design challenge activity, learners make a balloon hover at eye level for five seconds, and then make it move by creating air currents.