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In this activity, learners will estimate the sizes of balls to learn how to estimate the size of hail. Learners will compare their estimates to the estimates of their peers and the real measurements.

$1 - $5 per group Ages 6 - 14 10 to 30 minutes
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Learners are given mysterious white powders and have to determine their identity with chemical tests.

$1 - $5 per group Ages 11 - adult 10 to 30 minutes
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In this activity, learners explore center of gravity, or balance point, of stacked blocks.

$1 - $5 per group Ages 8 - 14 10 to 30 minutes
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In this math activity, learners create their own units of measurement by making noodle rulers. Learners practice estimating and measuring objects using the noodle rulers .

$1 - $5 per student Ages 4 - 8 10 to 30 minutes
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Learners trace, cut out and fly a boomerang, outdoors or in a large indoor space.

1 cent - $1 per student Ages 4 - 14 10 to 30 minutes
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In this activity, a spinning bicycle wheel resists efforts to tilt it and point the axle in a new direction.

$5 - $10 per group Ages 11 - 18 10 to 30 minutes
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In this activity, learners explore how nanotechnology is being used to create new types of protective fabrics.

Over $20 per group Ages 6 - adult 10 to 30 minutes
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In this design challenge, learners will practice empathy and design thinking skills by creating an invention of the future.

free Ages 6 - adult 10 to 30 minutes
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This is a quick activity (located on page 2 of the PDF under Nasturtium Leaves Activity) about surface tension.

free Ages 8 - 14 10 to 30 minutes
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In this art meets science activity, learners pack silver, ball-shaped ornaments in a single layer in a box to create an array of spherical reflectors.

$5 - $10 per student Ages 6 - 14 10 to 30 minutes
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In this activity, learners explore their eye pupils and how they change.

free Ages 8 - 14 10 to 30 minutes
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This fun and simple hands-on astronomy activity lets learners create 3D models of the Earth, Moon and Sun to demonstrate solar and lunar eclipses.

$5 - $10 per group Ages 6 - adult 10 to 30 minutes
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In this activity, learners discover how the extent of various wind speeds changes in each of the four quadrants around a hurricane.

free Ages 11 - 18 10 to 30 minutes
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In this activity, learners explore the economics of coal mining as you they use fake money to purchase mining tools, attempt to carefully mine their cookies, sell their chocolate chip ore, and try to

$5 - $10 per student Ages 6 - adult 10 to 30 minutes
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In this math game, learners try to earn the most points by winning stacks of four dice. Learners practice number recognition and addition skills.

$1 - $5 per group Ages 8 - 11 10 to 30 minutes
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In this activity, learners use their imaginations and experiment with different materials to create bug hats.

$5 - $10 per group Ages 4 - 6 10 to 30 minutes
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In this activity, learners create three-dimensional shapes by making some origami models of simple boxes and containers.

$1 - $5 per group Ages 8 - 14 10 to 30 minutes
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In this adapted version of poker, learners practice writing chemical formulas by playing this chemistry card game.

$1 - $5 per group Ages 11 - 18 10 to 30 minutes
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This is an activity which will allow learners to gain an understanding of lemur behavior through observation and role play.

free Ages 6 - 14 10 to 30 minutes
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This open-ended art project allows learners to create their own colorful ice sculpture by using rock salt and food coloring on a solid block of ice.

$1 - $5 per student Ages 4 - 8 10 to 30 minutes