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Telescopes as Time Machines
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This fun, nighttime hands-on astronomy activity lets learners explore how long it takes for light from different objects in the universe to reach Earth.

Supernova Star Maps
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This fun astronomy activity allows learners to experience finding stars in the night sky that will eventually go supernova. This activity is perfect for a star party outdoors.

Two Ears are Better Than One: Sound Localization
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This activity (9th activity on the page) about hearing demonstrates to learners the importance of having two ears.

Racing with the Sun: Creating a Solar Car
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Learners use engineering design principles to construct and test a fully solar-powered car. Solar car kits usually include a photovoltaic cell and motor; some include a chassis as well.

Pringles Pinhole Camera
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An ordinary camera has a lens that makes an image on film. In a pinhole camera, a small hole replaces the lens.

Comet Cratering
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Make impact craters with marbles (or rocks or washers) in a container of flour. Find out what you can learn about your "comets" by the craters they make.

Balls and Ramps
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In this activity, learners use simple, everyday materials to experiment with balls and ramps.

Make Your Own Barometer
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In this weather activity (page 10 of the PDF), learners will demonstrate the changes in atmospheric pressure by constructing their own barometer.

Number of Mentos vs. Height: Soda Geyser Series #5
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In this activity, learners conduct a controlled experiment to examine how many Mentos are needed to make the tallest possible soda geyser.

Ready to Observe: Enhance Your Telescope Experience
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This fun hands-on astronomy activity uses a variety of simple props to help learners understand why they see what they see in a telescope.

Soda Brand vs. Height Experiment: Soda Geyser Series #4
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In this activity, learners conduct a controlled experiment to examine which brand of soda makes the best (highest) soda geyser.

Melts in Your Bag, Not in Your Hand
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In this activity, learners use chocolate to explore how the Sun transfers heat to the Earth through radiation.

Solar Cell Simulation
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In this activity, learners model the flow of energy from the sun as it enters a photovoltaic cell, moves along a wire and powers a load.

Terrestrial Hi-Lo Hunt
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In this outdoor activity, learners search for the warmest and coolest, windiest and calmest, wettest and driest, and brightest and darkest spots in an area.

Sensory Hi-Lo Hunt
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In this outdoor activity, learners use only their senses to to find the extremes of several environmental variables or physical factors: wind, temperature, light, slope and moisture.

Squishy Soil
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In this activity, learners will investigate the part of soil. Explore how clay, silt, and sand make up the dirt in your background. Activity includes step-by-step instructions and extension ideas.

Weather Forecasting
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This activity (on page 2 of the PDF under SciGirls Activity: Forecasting) is a full inquiry investigation into meteorology and forecasting.

As the Rotor Turns: Wind Power and You
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In this engineering activity, learners will get acquainted with the basics of wind energy and power production by fabricating and testing various blade designs for table-top windmills constructed from

Super Soil
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In this outdoor activity, learners make their own organic-rich soil. Depending on where this activity is done, learners will probably discover that their local soil is low in organic matter.

The Shadow Knows I
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In this activity, learners will measure the length of their shadow from the Sun and compare it three to four months later.