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Chair Lift Challenge
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In this activity, learners explore the unique challenges in transportation engineering, such as devising a method for skiers or hikers to get to the top of a mountain.

Trebuchet Toss
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In this activity, learners explore trebuchet design. Teams of learners construct trebuchets from everyday materials.

Weight in Space
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In this activity, learners are challenged to calculate their own weight on various planets using a scale and calculator. Older learners may be challenged to do so without using calculators.

Airfoils
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In this experiment, learners discover how an airfoil creates lift. Learners use simple materials to build an airfoil and test it at different angles to investigate Bernoulli's principle.

Spring Scale Engineering
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In this activity, learners explore how spring scales work and how they are used for non-exact weight measurement.

Water Tower Challenge
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In this activity, learners explore how engineers work to solve the challenges of a society, such as delivering safe drinking water.

Life Vest Challenge
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In this activity, learners explore the engineering behind life vests or personal flotation devices and the challenges met by these devices.

Air Pressure and Dent Pullers
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In this activity, learners simulate Otto von Guericke's famous Magdeburg Hemispheres experiment.

Chemistry Makes Scents
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In "Chemistry Makes Scents," participants use their noses to distinguish between chemicals with very similar structures.

Pages of a Forbidden Tome
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In this activity, learners use chemistry to produce weathered "antiqued" paper with burned edges. Learners first soak white paper in coffee and then apply a charring solution of ammonium chloride.

Wind Tube
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In this activity, learners explore moving air and the physics of lift and drag by constructing homemade wind tunnels.

Column Chromatography
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In this activity, learners separate the components of Gatorade using a home-made affinity column.

Colorblind Dogs
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This activity (on page 2 of the PDF under SciGirls Activity: Colorblind Dogs) is a full inquiry investigation into dogs' ability (or inability) to see color.

Doghouse Design
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This activity (on page 2 of the PDF under SciGirls Activity: Doghouse Design) is a full inquiry investigation into absorption and reflection of radiant energy.

Making Sense of Sensors
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In this activity, learners explore sensors and focus specifically on how to measure humidity using a sensor.

Antibody Builder
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Learners use Duplo bricks to build antibodies with shapes that match model viruses.

Exploring the Universe: Static Electricity
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This activity encourages visitors to build an electroscope—a simplified version of one of the tools scientists use to study the invisible forces on Earth and in space.

Molecules in Motion
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"Molecules in Motion" explores how materials behave and change in a vacuum.

Limewater
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This is a chemistry lab activity about solutions (page 6 of the PDF). Students make a limewater testing solution for carbon dioxide and explore the concepts of solubility and precipitates.

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.