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Students design and create their own air-powered rockets, in this hands-on activity.

Straws and pipe cleaners are terrific materials for building models of pyramids and cubes.

In this activity, learners design, build and test a model suspension bridge for sturdiness and strength.

In this activity, learners build a hot air balloon using just a few sheets of tissue paper and a hair dryer.

In this project, students explore how levers work, by making a puppet with moving limbs.

Create airplanes from straws and geometric shapes. Test them out to see how far they can fly, or how accurately they can be aimed.

In this activity, learners make a model of the solid Earth's layers that's good enough to eat! Learners use tasty foodstuffs to simulate Earth's inner core, outer core, mantle, and crust.

In this activity, learners make bridges using an oil-based modeling clay (plasticene). The instructions include discussion questions for both before and after bridge building.

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

In this activity (located on page 5 of PDF), learners work in groups to create dig sites for display.

In this activity, learners will build a roller coaster for a marble to run on using everyday household materials such as paper towel or toilet paper rolls, cups, boxes, books, buckets, chairs, etc.

In this activity, learners create air cannons out of everyday materials. Learners use their air cannons to investigate air as a force and air pressure.

In this activity, learners investigate the concepts of relative size and distance by creating a basic model of the solar system.

In this activity, learners build a bird feeder or feeders to attract birds for observation.

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

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

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

This hands-on activity shows you how to build basic architectural shapes out of toothpicks and gumdrops.

In this earth science activity, learners conduct a series of short experiments to explore how rocks change.

In this dynamic activity, learners build a catapult that launches projectiles, such as marshmallows.