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In this environmental science activity (page 3 of the PDF), leaners will identify and explain the causes of erosion.

In this three/four-day lesson, learners calculate perimeters and areas and draw the castle plan to scale.

In this version of tag, a large group of learners model how the body fights infection. Learners act as germs, as lymphocytes, and as the body's cells threatened by germs.

In this activity, learners work in groups to design a parachute out of household items that keeps an egg secure when dropped from a certain height.

In this activity, learners build large-scale structures and cantilevers in a series of "building out" challenges with garden poles and tape.

Learners use engineering design principles to construct and test a fully solar-powered car. Solar car kits usually include a photovoltaic cell and motor; some include a chassis as well.

In this weather activity (page 1 of the PDF), learners will construct their very own anemometer to measure wind speed.

In this engineering activity, learners will get acquainted with the basics of wind energy and power production by fabricating and testing various blade designs for table-top windmills constructed from

This fun and simple hands-on astronomy activity lets learners make 3-dimensional models of the Earth and Moon.