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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.

In this engineering activity (page 3 of PDF), young learners investigate how a pole can be made stable by “planting” its base in the ground or adding supports to the base.

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.

In this activity, learners create a three-dimensional sculpture while examining the characteristics of fish.

In this craft activity, learners will explore the structure and purpose of antelope horns by constructing their own headband using toilet paper rolls and yarn.

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 engineering activity (page 2 of PDF), young learners investigate how a wide base can make a building more stable. Learners use blocks or boxes of different sizes to construct stable towers.