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In this physics activity (page 10 of the PDF), learners will explore how energy from moving water can be used.

In this activity (page 1 of the PDF under SciGirls Activity: Water Slides), learners will whip up some suds with a cup of water and a tablespoon of dish soap until the bubbles are stiff enough to star

In this activity, learners use the design thinking process to design and build their own aqueduct, or water bridge.

In this activity, learners build water-propelled engines from soft drink cans.

In this design challenge activity, learners build a boat that can hold 25 pennies (or 15 one inch metal washers) for at least ten seconds before sinking.

Design a vessel that tests the limits of wind power given a set of off the shelf and recycled materials.

In this activity, learners make water rockets to explore Newton's Third Law of Motion. Learners make the rockets out of plastic bottles and use a bicycle pump to pump them with air.

Learners design, build, and test models of "dragon boats" made from up to three milk cartons.

In this activity, learners build a "pneumatic trough," a laboratory apparatus used for collecting pure gas samples over water.

No glue is needed for learners of any age to become marshmallow architects or engineers.

In this activity (page 1 of the PDF under SciGirls Activity: Bogs), learners will test cups full of potting soil, sand, and sphagnum moss to see which earth material is able to soak up the most water.

In this hands-on activity, learners use the steps of the design process to create a hook to rescue a "space capsule" from the water.

In this hands-on activity, learners will construct a scuba diver that can float in order to explore how sea creatures stay neutrally buoyant in the ocean and to see what kinds of forces might be influ

Learners make their own paper. They start by shredding old newspaper, clean toilet paper, and clean paper towels.

Learners work in groups to construct bridges using stale marshmallows and toothpicks.

In this crafty chemistry activity (on page 2 of the PDF), learners make their own paper from used paper they may have otherwise thrown away.

In this activity, learners build an electric two-paddle boat using paint paddles, plastic knives, and empty water bottles.

In this fun hands-on activity, learners whip up a batch of cyber-dough (play dough) using math for measurements.

Learners build a filter from old soda bottles and dirt. They create polluted water, and pour it through their filter to clean it.