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Tall Tower Challenge
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In this activity, learners explore the design of tall structures such as skyscrapers and telecommunication towers.

Cool It!
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Learners make a refrigerator that works without electricity. The pot-in-pot refrigerator works by evaporation: a layer of sand is placed between two terra cotta pots and thoroughly soaked with water.

Make Pooter
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In this activity, learners will explore engineering to construct an insect collecting tool (insect aspirator). The pooter uses suction to safely collect smaller insects that nets miss or may injure.

Critical Load
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In this activity, learners explore the concepts of structural engineering and how to measure the critical load, or the maximum weight a structure can bear.

Lego Man Jump
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In this activity, learners are challenged to create a parachute using easily sourced materials in order to transport a LEGO figure safely to the ground.

Tools of Magnification
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In this activity related to microbes, learners use water drops and hand lenses to begin the exploration of magnification. This activity also introduces learners to the microscope.

Puff Car
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In this activity, learners are challenged to design a wind-powered car using only a handful of household materials.

Milk Plastic
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In this activity, learners transform everyday milk into small plastic figurines and jewelry. Use this activity to introduce learners to monomers and polymers.

Reflective Solar Cooker
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In this activity, learners use the Sun's energy to cook marshmallows. Learners construct the solar oven out of simple everyday materials.

Gumdrop Dome
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In this engineering activity, learners construct sturdy geodesic structures out of gumdrops and toothpicks. Use this activity to explore engineering principles as well as sturdy shapes and triangles.

Solar Cooker
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Learners build a simple solar oven from a shoebox, black construction paper, and aluminum foil. Over the course of a few hours, the oven heats up water enough to brew tea.

Balloon Rockets
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In this activity, learners will create a model rocket out of an inflated balloon attached to a straw on a taught string.

Cup Draw
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In this activity, learners construct drawing machines using a cup, some markers, and a cricket to control the movement. A programmed LEGO RCX or Cricket is required for this high-tech version.
Without An Ark: The Effects of Storms and Floods
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April showers bring May flowers, but what do coastal storms bring?

Catapult
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In this activity, learners build mini catapults using paint paddles and a spoon. Use this activity to introduce learners to forces and projectile motion.

Pollution Diffusion
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Learners design their own experiment to investigate how pollution diffuses through ground material.

Milli's Super Sorting Challenge
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In this activity, learners separate materials based on their special properties to mimic the way recyclables are sorted at recycling centers.

Sky Diver
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Students design and build their own parachutes in this hands-on engineering project.

The Awesome Game Race
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In this engineering activity, learners design their own board games.

Harvesting Chemicals from a Battery
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In this activity, learners take apart a used zinc-carbon dry cell battery.