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In this activity, learners make their own binary code bracelets by translating their initials into 0s and 1s represented by beads of 2 different colors.

1 cent - $1 per student Ages 8 - 18 10 to 30 minutes
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In this quick activity (page 1 of the PDF under SciGirls Activity: Music and Sound), learners will construct an oboe-like instrument from a plastic drinking straw by cutting the end to split it into t

1 cent - $1 per group Ages 8 - 14 10 to 30 minutes
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In this Cyberchase activity, learners use the numbers one through six to solve a puzzle.

1 cent - $1 per student Ages 6 - 11 10 to 30 minutes
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In this activity, learners will explore the physics of air by making a snake kite.

1 cent - $1 per student Ages 4 - 11 5 to 10 minutes
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Using household materials, learners can make white gooey globs from clear solutions. Alum, dissolved in water, reacts with the hydroxide in ammonia to create aluminum hydroxide.

1 cent - $1 per student Ages 8 - 14 5 to 10 minutes
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In this activity, learners will discover how our universe is continuously expanding.

1 cent - $1 per student Ages 4 - 14 10 to 30 minutes
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In this math activity, learners build Peppy the dog the best trail and park for running around.

1 cent - $1 per group Ages 8 - 11 10 to 30 minutes
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This is an activity about reaction times. Just how quickly must an NHL goalie respond to save a shot, and how does your reaction time compare?

1 cent - $1 per group Ages 14 - adult 10 to 30 minutes
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In this activity (on page 2), one person "programs" the other like a robot to move through a space, trying to get them to avoid obstacles and reach a goal.

1 cent - $1 per group Ages 6 - 14 10 to 30 minutes
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In this math activity, learners pretend there is a special store that lets you pay for toys by their weight in pennies.

1 cent - $1 per student Ages 4 - 8 5 to 10 minutes
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En esta actividad, los aprendices harán un terrario usando materiales simples.

1 cent - $1 per group Ages 4 - 8 10 to 30 minutes
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In this design challenge activity, learners build a tower that can support a tennis ball at least 18 inches off the ground while withstanding the wind from a fan.

1 cent - $1 per student Ages 8 - 14 30 to 45 minutes
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Look at pictures through different color filters and you'll see them in a new way. People have used color filters in beautiful photography or sending secret messages.

1 cent - $1 per student Ages 4 - adult 5 to 10 minutes
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In this activity, learners will estimate how many seeds are in a fruit or vegetable, then count to find out. The result: mix estimation with healthy eating.

1 cent - $1 per group Ages 4 - 14 10 to 30 minutes
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Create your own spinning top, and explore color, shapes and spinning. This activity contains instructions for making your spinning top, and tips on how to design and decorate it.

1 cent - $1 per student Ages 4 - 8 5 to 10 minutes
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Learners make a counting/estimating jar to exchange with friends or bring home.

1 cent - $1 per student Ages 4 - 14 10 to 30 minutes
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Make a cuíca (“kwee-ka”), a traditional Brazilian musical instrument that originated in Africa. Played primarily in Brazil, now you can play it at home, too, with this Exploratorium produced activity.

1 cent - $1 per student Ages 6 - adult 10 to 30 minutes
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In this optics activity, learners split white light into all its component colors using three household items: a compact disc, dishwashing liquid, and a hose (outside).

1 cent - $1 per student Ages 8 - 14 10 to 30 minutes
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In this three part activity, learners explore and experiment with shadows to learn about the Sun's relative motion in the sky.

1 cent - $1 per group Ages 4 - 11 1 to 2 hours
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In this activity, learners will play a coin toss game where the highest total wins. Combine coin recognition, addition, and probability with a game learners can play on their own.

1 cent - $1 per group Ages 6 - 14 5 to 10 minutes