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In this craft activity, learners create a string of cut-out moons and stars.

1 cent - $1 per student Ages 4 - adult 30 to 45 minutes
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In this hands-on activity, learners use an assortment of (mainly household) items to complete Rube Goldberg-type challenges.

$1 - $5 per student Ages 4 - adult 10 to 30 minutes
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This activity attempts to clear up the common misconception that deserts are always hot, totally dry, and uninhabitable.

$1 - $5 per group Ages 4 - 11 30 to 45 minutes
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In this activity, learners listen to songs and decode hidden messages based on the same principle as a modem. As a final challenge, learners decode the binary messages in a music video.

free Ages 6 - 18 30 to 45 minutes
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In this tasty activity, learners make their own ice cream any day of the year in an exploration of heat and cold. Highlights include freezing and melting and the transition from liquid to solid.

$1 - $5 per student Ages 6 - 11 45 to 60 minutes
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In this outdoor activity, learners construct bird feeders and set them up at to investigate bird behavior for one or two weeks. Multiple feeder designs are suggested.

$10 - $20 per group Ages 6 - 14 1 to 4 weeks
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In this activity, learners compete to be the first to win twenty counting pieces. First, learners draw patterns on only one side of four craft sticks.

1 cent - $1 per group Ages 4 - 8 10 to 30 minutes
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In this activity, learners design wind-powered cars out of simple household materials. Students have fun designing and then racing their vehicles around the room.

$1 - $5 per student Ages 6 - 11 30 to 45 minutes
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Learners will build and experiment with their own windmills made from simple household materials.

$10 - $20 per group Ages 6 - 14 30 to 45 minutes
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How many colors make black? Gather as many water soluble black markers as you can find.

1 cent - $1 per student Ages 4 - 18 10 to 30 minutes
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In this activity, learners explore the size and scale of dinosaurs. Learners listen to "Dinosaurs, Dinosaurs" by Byron Barton to understand some background information about dinosaurs.

$1 - $5 per group Ages 6 - 8 45 to 60 minutes
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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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This activity includes several games about animal sounds. Using their sense of hearing and communicating with various kinds of noisemakers, learners role-play predator and prey.

$1 - $5 per group Ages 6 - 14 30 to 45 minutes
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In this math activity, learners read "The Button Box" by Margarette S. Reid and then make their own button boxes filled with different buttons.

$5 - $10 per group Ages 6 - 8 1 to 2 hours
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Learners make kimchee or sauerkraut, which is really just fermented cabbage, in a 2-liter plastic bottle.

$1 - $5 per group Ages 4 - 14 1 to 4 weeks
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In this activity, learners use maps to locate the Arctic region and use a word game to discover the types of resource people need to survive in the extreme climate.

$1 - $5 per group Ages 4 - 11 30 to 45 minutes
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These math posters have questions written on them, such as: How fast can a cheetah run? or How long can a giant tortoise live? Post these around the room or leave them out for children to explore.

free Ages 6 - 14 30 to 45 minutes
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In this two part activity, learners become draft detectives by constructing their own draft catchers to detect drafts around windows or doors.

$5 - $10 per student Ages 4 - 14 10 to 30 minutes
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In this family or group inquiry activity, learners use their senses to explore a local forest or woodland.

1 cent - $1 per group Ages 6 - 11 1 to 2 hours
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In this activity, learners make their own bug boxes and test the habitat preference of selected "minibeasts" (bugs).

$5 - $10 per student Ages 6 - 14 2 to 4 hours