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Backyard Biodiesel
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In this activity, learners make a small batch of biodiesel that will work in any diesel engine. Learners use an old juice bottle as a "reactor" vessel to chemically process vegetable oil into fuel.

Folding Matters
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In this activity, learners explore how the process of folding has impacts on engineering and is evident in nature.

Make and Fly a Helicopter
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Learners follow the template to build and fly a paper helicopter.

Cardboard Sculptures
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Learners explore the endless possibilities of cardboard engineering in this open-ended STEAM activity. Practice being creative by building structures with no glue, only cardboard and scissors.

Which Parachute
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In this activity, learners will engineer three different parachutes to test how well each one works.

Mechanical Madness
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In this online Flash game, learners test their engineering know-how, moving a collection of mechanical parts onto a board to make complete a system of parts that will move a ball from start to finish.

Parachute Parade
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In this engineering activity, learners design parachutes to give toy figures safe landings. This activity is great for practicing an important STEM skill--changing only one variable at a time.

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

Egg-cellent Landing
Learners recreate the classic egg-drop experiment with an analogy to the Mars rover landing. The concept of terminal velocity will be introduced, and learners perform several velocity calculations.

Rooftop Gardens
How does a green roof, or roof covered by plants, affect the temperature of the inside and outside of a building? Learners design and build houses to find out the answer.

Leaning Tower of Pasta
Learners build structures from spaghetti and marshmallows to determine which structures are able to handle the greatest load.

Solar Water Heater
Learners work in teams to design and build solar water heating devices that mimic those used in residences to capture energy in the form of solar radiation and convert it to thermal energy.

Cleaning Air with Balloons
Learners observe a simple balloon model of an electrostatic precipitator. These devices are used for pollutant recovery in cleaning industrial air pollution.

Zero-Energy Housing
In this activity, learners investigate passive solar building design with a focus solely on heating.

Super Spinners
Learners build at least two different spinners (tops) to investigate how mass distribution, size, and shape affect the length of time the spinner spins.

Let's Bag It
Learners observe and discuss a vacuum cleaner as a model of a baghouse, a device used in cleaning industrial air pollution.

Robot Body Language
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In this robotics activity, learners find ways to express emotions and feelings using only body movements, not facial expressions.

Hoop Glider
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In this activity, learners engineer a flying glider using paper hoops and a drinking straw.

DIY Pasta Rover
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In this activity, learners design and build a NASA rover using raw pasta and candy with a limited imaginary budget.

Wire Maze
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Learners create an electrical-circuit maze out of wire, then try to pass a paperclip through the maze without touching the wire.