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In this activity, learners construct a rocket powered by the pressure generated from an effervescing antacid tablet reacting with water, and build a launch pad for their rocket.

$5 - $10 per student Ages 6 - 18 10 to 30 minutes
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In this activity, learners will discover how fossils are dug out of the earth by carefully exposing treasures hidden in an artificial rock that is easily made at home.

$1 - $5 per student Ages 6 - adult 10 to 30 minutes
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In this activity, learners separate a mixture of pebbles, salt crystals, and wood pieces. They add water and pour the mixture through a strainer.

$1 - $5 per group Ages 4 - adult Under 5 minutes
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In this activity, learners explore how distance can affect the way we perceive the size of an object.

free Ages 4 - 18 5 to 10 minutes
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Learners will explore the concept of angular distance, and investigate why the moon appears to be the same size as the sun during a solar eclipse, despite the sun being much larger.

1 cent - $1 per group Ages 6 - adult 5 to 10 minutes
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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.

$1 - $5 per student Ages 6 - 18 30 to 45 minutes
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Using simple materials from around the house and recycled materials, learners will engineer a grabber device to pick up and put down objects that are at least 12 inches away.

free Ages 6 - adult 30 to 45 minutes
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In this activity, learners build a speedboat using paint paddles, a propeller, and film canister. Learners attach a simple circuit and motor to the boat to power the propellers.

$10 - $20 per student Ages 6 - 18 30 to 45 minutes
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In this activity, learners will see how UV light affects colors over time by making their own sunprint on construction paper.

1 cent - $1 per student Ages 6 - adult 10 to 30 minutes
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In this activity, learners will experiment with textures, shapes, and materials and create their own unique masterpieces.

$1 - $5 per group Ages 4 - adult 10 to 30 minutes
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In this chemistry activity, learners use spaghetti to explore density and chemical reactions.

$1 - $5 per group Ages 6 - 18 5 to 10 minutes
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In this hands-on activity, learners use heat to shrink samples of polystyrene plastic (#6 recycle code). Learners compare the size and shape of the plastic pieces before and after shrinking.

1 cent - $1 per group Ages 6 - adult Under 5 minutes
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In this activity, learners use tonic water to detect ultraviolet (UV) light from the Sun and explore the concept of fluorescence.

$1 - $5 per group Ages 6 - adult 5 to 10 minutes
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In this activity, learners make a yeast-air balloon to get a better idea of what yeast can do. Learners discover that the purpose of leaveners like yeast is to produce the gas that makes bread rise.

$1 - $5 per group Ages 4 - 18 5 to 10 minutes
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This hands-on astronomy activity lets learners hunt for different objects in the night sky that contribute to stellar and planetary formation, using a Treasure List.

1 cent - $1 per student Ages 4 - adult 45 to 60 minutes
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In this engineering design challenge, learners make a bird and then control its flight with attached strings.

$1 - $5 per group Ages 4 - 18 1 to 2 hours
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In this activity, learners design and build a toy top out of simple, everyday materials and have the option to use the toy as an artistic tool.

$1 - $5 per group Ages 4 - adult 10 to 30 minutes
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In this fun and interactive online exhibit, the straight lines of a tile wall appear to curve. The learner moves the rows of tiles and changes the color of the grout to achieve the intriguing effect.

free Ages 4 - 18 5 to 10 minutes
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In this simple game, learners start to understand how to sort and categorize objects by trying to guess the connection between three items that someone else has chosen.

free Ages 4 - adult 5 to 10 minutes
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This is a hands-on activity that uses bread and household materials to grow mold. Learners collect dust from a room, wipe it on food, and contain it. One to seven days later, mold has grown.

1 cent - $1 per student Ages 4 - 18 1 to 7 days