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Design and Build a Better Candy Bag
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In this activity, learners explore how product design differences can affect the success of a final product -- in this case a bag for holding candy.

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.

Column Chromatography
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In this activity, learners separate the components of Gatorade using a home-made affinity column.
Ships Ahoy!
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Design a vessel that tests the limits of wind power given a set of off the shelf and recycled materials.

Mint Your Own Coin
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Coins are everyday objects which tell a lot about the people who use them.

Irrigation Ideas
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In this activity, learners explore how civil engineers solved the challenge of moving water via irrigation.
Magnus Glider
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A design challenge that takes paper airplanes into an entirely different direction: a magnus glider uses cups and and rubber bands to create a glider that uses the same forces that a curveball (from b

Molecular Gastronomy: Use Self-Assembly to Make a Dessert Topping
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Molecular gastronomy is the scientific study of food preparation. Learners use self-assembly techniques to create edible capsules of chocolate syrup (food grade ingredients are required).

Give Me a Brake
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In this activity, learners explore the concept of how brakes can stop or slow mechanical motion.

Unleakable Bag
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In this activity, learners explore the flexibility of polymer chains by pushing sharpened pencils through a Ziploc bag.

Build Your Own Solar Oven
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Learners follow directions to construct a solar oven that really cooks! The solar oven uses aluminum foil to reflect sunlight into a cooking chamber, which is painted black.

Paper Cup Stool
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In this activity, learners will explore how and why weight distribution works.

Personal Fan
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Cool off in the heat with this project! Learners use simple materials to build a fan that runs on a motor.

Circuits with Friends
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In this activity, learners explore the parts of a circuit by modeling, as a group, a “human” circuit.

High Tech Fashion
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In this technology activity, learners build simple circuits, design soft circuits using conductive thread, and then sew switch-activated circuits.

Marble Run!
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This activity (on page 2 of the PDF under SciGirls Activity: Luge) is a full inquiry-based challenge related to motion and design optimization.

Atoms and Matter (K-2)
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In this activity, learners explore atoms as the smallest building blocks of matter. With adult help, learners start by dividing play dough in half, over and over again.
Magnetism
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In this activity, learners explore the principles of magnetism by observing how various materials interact with magnets and superconductors.

Sound Representation: Modems Unplugged
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In this activity, learners listen to songs and decode hidden messages based on the same principle as a modem. As a final challenge, learners decode the binary messages in a music video.