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

In this activity, learners make "solar cookies," edible models of the Sun's outer layers using sugar cookies and toppings.

In this activity, learners discover how frogs' bodies change while growing from a tadpole to a frog. Learners create a simple craft that gives a visual display of the metamorphosis process.

In this activity, learners build a sled kite that models a type of airfoil called a parawing.

In this activity, learners explore dinosaur skeletons, anatomy, and locomotion. Learners compare and contrast dinosaur skeletons and drawings.

In this creative activity, learners will find out what makes an insect an insect by studying examples of insect adaptations and by examining why there are so many different types of insects.

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

In this activity (located on page 6 of the PDF), learners explore the ways people access water in their homes.

In this activity, learners make their own edible DNA double helix out of candy and find out about the shape of DNA.

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

In this activity, learners use tinfoil to build and test their own boats - which designs will float, and which will sink?

This quick demonstration (on page 11 of PDF) allows learners to understand why scientists think water ice could remain frozen in always-dark craters at the poles of the Moon.

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

In this activity, learners build helicopters and launchers using wooden dowels and scrap paper. Use this activity to explore rotational motion and kinetic and potential energy.

This fun activity uses simple materials such as milk cartons and mirrors to introduce the ideas of optics and visual perception.

In this activity, learners will predict the size of a giant scale model of a comb or other rectangular object, then make one. If you tripled the size of a dollar bill, could you sit on it?

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.

This demonstration activity models how Venus appears from Earth.

In this engineering activity (page 5 of PDF), young learners investigate how materials and design contribute to the strength of a structure, particularly walls.