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Exploring A Hydrogel
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In this activity on page 10 of the PDF, learners develop an experiment to answer the following question: "How much water can the hydrogel in a baby diaper hold?" Use this activity to explore polymers,

Cardboard Automata
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Cardboard Automata are a playful way to explore simple machine elements while creating a mechanical sculpture.

Build a Bridge
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In this activity, learners use design thinking to design and build their own bridge out of household materials including adhesives and/or connectors.

Exploring Fabrication: Gummy Capsules
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In this activity, learners make self-assembled polymer spheres.

Seeing Is Believing
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This activity is designed to accompany the PBS documentary about African-American chemist "Percy Julian: Forgotten Genius." Learners look through two cups with small holes in them to simulate what it'

Building A Storm Drain
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In this design challenge, learners design a storm drain cover that catches litter to protect waterways to learn about how local actions can have system-level effects.

Artificial Intelligence: The Intelligent Piece of Paper
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This activity explores what it means for a computer to be intelligent and introduces the topic of what a computer program is and how everything computers do simply involves following instructions writ

Ice Roads: Steiner Trees
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In this outdoor activity, learners use pegs (like tent pegs) and string or elastic to simulate drill sites and roads in Northern Canada.

Hydraulic Car
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In this activity, learners build cars using syringes and water-powered hydraulics. Learners construct the car frame out of cardboard and set up a hydraulic system to raise and lower the car.

Propeller-Powered Car
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In this activity, learners construct cars that are powered by hand-made, electric propellers.
History of Siege Weapons
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In this activity (page 10 of the PDF) learners will explore the historical progression of siege weapons to gain an understanding of how the addition and modification of parts can change the efficiency

Planetary Rescue Squad
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This is an online Flash game where learners can experiment with ballistics and how to compensate for the varying levels of gravity found on the planets of our Solar System.

Cable Car
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In this activity, learners string a line across the room and build cable cars that can move from on end to the other.

Size Wheel
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In this fun sticker activity, learners will create a size wheel with images of objects of different size, from macroscopic scale (like an ant) to nanoscale (like DNA).

Hovercraft
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In this activity, learners build a hovercraft using a paper plate, cup, and simple motor.

Maritime Munchies
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In this activity, learners follow simple historical maritime recipes to cook up hardtack and swanky, and then compare the foods they eat to what was served on ships in the past.

Build An Aqueduct
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In this activity, learners use the design thinking process to design and build their own aqueduct, or water bridge.

Cleaning Water with Dirt
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In this activity on page 7 of the PDF (Water in Our World), learners make their own water treatment systems for cleaning water.

Energetic Musical Instruments
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Learners design and create musical instruments from common objects; their challenge is to create an instrument that can make three different tones.

Recycling Rules: Understanding Recycling and a MRF
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In this activity, learners simulate the separation techniques that materials recovery facilities (MRFs) use and then design their own series of recycling techniques.