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Balloon Car
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In this physics activity, challenge learners to make and race a balloon-powered car. Learners construct the body out of a paper cup, wheels out of wooden spools. and fuel tank out of a balloon.

Pencil Balance
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In this activity, challenge learners to make a pencil stand on its tip using only two pieces of wire and two clothespins. Use this activity to demonstrate the center of gravity.

All Wound Up
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In this activity, learners build a racecar using only a rubber band, spool, straw, and paper clip! This racer is a classic toy that zips across a flat surface.

Toy Chemistry
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In this playful, goopy activity, learners mix two liquids to create a solid (that sometimes acts like a liquid ), using basic household materials such as borax and glue.

ZOOM Glue
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In this activity, learners mix milk, vinegar, baking soda, and water to create sticky glue. Use this activity to explain how engineers develop and evaluate new materials and products.

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

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

As Straight as a Pole
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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.

Designing a Wall
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In this engineering activity (page 5 of PDF), young learners investigate how materials and design contribute to the strength of a structure, particularly walls.
Float or Sink?
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In this water activity, learners test which objects float and which sink. Learners discover that objects behave differently in water.

Roving on the Moon
Add to list DetailsIn this design challenge activity, learners build a rubber band-powered rover that can scramble across the room.

Paddle Power
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In this design challenge, learners build a boat that paddles itself using a rubber band as its power source.

Hidden Alarm
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In this design challenge activity, learners invent a device that will make their friends and family ask, "What's buzzing?" Learners design an alarm with an on/off switch that is small enough to hide.

Stereo Hanger
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In this activity, learners investigate sound wave science, in stereo! Learners construct a "stereo" out of a metal coat hanger and piece of string to explore sound vibrations.

Penny Cup Game
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In this optics activity, learners conduct an experiment to find out why two eyes are better than one!

Peripheral Vision
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In this optics activity, learners conduct an experiment to explore peripheral vision. Learners collect data about their ability to see shapes, colors, or letters using their peripheral vision.

Paper Bridge
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In this engineering activity, challenge learners to construct a paper bridge that can support 100 pennies.

Electric Gamebox Challenge
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In this design challenge activity, learners invent a pinball-like game where a kick stick hits a ping pong ball into a target that buzzes.

On Target
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In this design challenge activity, learners modify a cup so it can carry a marble down a zip line and also drop it onto a target.

Egg Bungee Jump
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In this activity, learners design a bungee jump for an egg using nylon stockings.