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This activity (on pages 38-43) has learners simulate the way scientists track and map the movement of otters in the wild using radio trackers.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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Visitors mix water and sodium bicarbonate (baking soda) in a large flask. They then add citric acid to the mixture and stopper the flask. The resulting reaction creates carbon dioxide gas.

$1 - $5 per group Ages 6 - adult Under 5 minutes
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Visitors separate a mixture of pebbles, salt crystals, and wood shavings by adding water and pouring the mixture through a strainer.

$1 - $5 per group Ages 6 - adult Under 5 minutes
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In this activity, learners use two different techniques to estimate how many little things fit into one bigger thing.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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In this activity, learners explore light and shadows by creating a lantern they can keep on their nightstand.

$1 - $5 per student Ages 6 - 14 30 to 45 minutes
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In this activity, learners will develop a method to test five similar-looking powders (baking soda, baking powder, cream of tartar, detergent, and cornstarch) with four test liquids (water, vinegar, i

$1 - $5 per group Ages 6 - 14 45 to 60 minutes
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In this simple activity, learners create an electroscope by sticking two short pieces of magic tape together and then pulling them apart to find the sign of the charge on an unknown charged object.

$1 - $5 per student Ages 8 - 18 10 to 30 minutes
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In this activity, learners add food coloring to hot and cold water in order to see how fluids at different temperatures move around in convection currents.

$1 - $5 per group Ages 8 - adult 5 to 10 minutes
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In this activity, learners build a simple "rocket" with ordinary household materials to demonstrate the basic principles behind rocketry and the principle of reaction.

$1 - $5 per student Ages 6 - 14 5 to 10 minutes
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In this activity, learners mix several sugar solutions to investigate the property of density. Each sugar solution has a different density and color of the rainbow.

$1 - $5 per group Ages 8 - 14 30 to 45 minutes
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This is a simple activity for learners to create a traditional musical instrument. Pan Pipes have developed all over the world in different cultures, from South America to Greece and China.

$1 - $5 per student Ages 6 - adult 45 to 60 minutes
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In this activity, learners take core samples of candy bars with a straw and carefully observe & excavate their sample, modeled after what the NASA Perseverance rover will do on Mars.

$1 - $5 per student Ages 6 - 14 30 to 45 minutes
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Learners use simple materials to construct a model the Big Dipper. Learners hang the model from a doorway or ceiling and look up at it to see the constellation as seen from Earth.

$1 - $5 per student Ages 8 - 18 30 to 45 minutes
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This activity (page 2 of the PDF under SciGirls Activity: California Fish) is a full inquiry investigation into environmental adaptation.

$1 - $5 per group Ages 8 - 14 1 to 2 hours
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In this activity, learners build an instrument for catching and observing flies. Learners act as entomologists, attract flies into a jar using a slice of apple, and then observe the flies' behavior.

$1 - $5 per group Ages 4 - 18 1 to 4 weeks
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In this design activity, learners create a vehicle that can transport a load, like a favorite toy or as a recycled object, from the top of a zipline to the bottom using only gravity.

$1 - $5 per group Ages 6 - 14 30 to 45 minutes
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Learners use a transparent plastic glove as a container to grow seeds. A different kind of seed can be planted in each finger.

$1 - $5 per student Ages 6 - 14 1 to 4 weeks
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In this activity, learners make their own encrypted code to pass along secret messages using a printable cipher wheel.

$1 - $5 per student Ages 8 - 18 30 to 45 minutes
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In this activity (page 4), learners work in groups to plan and build large structures using recyclable materials they have brought from home.

$1 - $5 per group Ages 6 - 14 30 to 45 minutes
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In this activity, learners simulate a multistage rocket launch using party balloons, fishing line, straws, and a plastic cup.

$1 - $5 per student Ages 8 - 18 45 to 60 minutes