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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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This activity combines learning about nutrition, math of measurement and proportion, and healthy eating. Start by distributing food packages with Nutrition Facts labeled.

free Ages 6 - 14 5 to 10 minutes
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Create a “Find Someone” list, with about 10 items, each containing a shape, number, or measurement. Can you find someone in the group with hair about 4 inches long? Someone wearing parallel lines?

free Ages 6 - 14 10 to 30 minutes
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In this activity, learners will be working with predictions with a time frame of one week, or longer. Start by planting seedlings.

$1 - $5 per group Ages 4 - 14 1 to 4 weeks
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In this international citizen science activity, learners measure their night sky brightness and submit their observations into an online database.

free Ages 4 - adult 10 to 30 minutes
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This is an activity about turbidity, or the amount of sediment suspended in water.

$1 - $5 per student Ages 6 - 14 10 to 30 minutes
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Straws and pipe cleaners are terrific materials for building models of pyramids and cubes.

1 cent - $1 per student Ages 4 - 11 30 to 45 minutes
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In this activity, learners use their senses to collect information about a fruit and record their findings in a Science Journal.

$10 - $20 per group Ages 4 - 8 45 to 60 minutes
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In this activity, learners develop an understanding of cylinders and volume as they compare two sizes of popcorn buckets.

1 cent - $1 per group Ages 4 - 8 10 to 30 minutes
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In this activity, learners will decide together on a question about how far, long or high the group could reach together.

free Ages 4 - 14 10 to 30 minutes
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In this activity, learners create a map of a hidden surface using a "sounding stick" -- a technique similar to how underwater maps were once made.

Over $20 per group Ages 4 - adult 10 to 30 minutes
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Put math of measurement into lining up — and make waiting in line fun. Choose a size characteristic that learners can physically compare, such as foot length or hair length.

free Ages 4 - 14 5 to 10 minutes
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In this activity, learners explore dinosaur skeletons and anatomy. Learners make observations about a T. rex skeleton diagram and then measure the skeleton length and width.

$1 - $5 per group Ages 6 - 8 45 to 60 minutes
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In this activity, learners "go fishing," then practice ruler use and size/pattern comparison with the animals they catch.

$1 - $5 per group Ages 4 - 8 5 to 10 minutes
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In this activity, caregivers and young learners work together to make a scale from household materials to compare different weights--an essential principle in early math.

1 cent - $1 per student Ages 4 - 8 10 to 30 minutes
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In this activity, learners use their estimation skills to match the unmarked containers to their amounts.

free Ages 4 - 8 10 to 30 minutes
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In this activity, learners use geometry in observing the shapes and angles soap bubbles create when they join together.

$5 - $10 per group Ages 6 - 14 30 to 45 minutes
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In this activity, learners will build thier own balance scale. Learners will explore weight and comparison through this activity.

1 cent - $1 per student Ages 4 - 14 10 to 30 minutes
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In this activity, learners will use their chosen material to build the tallest tower possible in under three minutes. This activity uses problem solving and fine motor skills to challenge learners.

$1 - $5 per student Ages 4 - 8 10 to 30 minutes
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In this activity, learners explore how and why rainbows form by creating rainbows in a variety of ways using simple materials. Learners create rainbows indoors and outdoors.

1 cent - $1 per student Ages 6 - 11 5 to 10 minutes