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In this math lesson, learners rotate through various centers while comparing and ordering objects according to length.

$5 - $10 per group Ages 4 - 6 45 to 60 minutes
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In this math lesson, learners identify the likelihood of an event by using a walk-on probability scale.

$1 - $5 per group Ages 8 - 11 45 to 60 minutes
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In this game, learners use clues to identify mystery shapes. Use everyday objects (like from the pantry) as the shapes.

1 cent - $1 per group Ages 4 - 8 30 to 45 minutes
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In this math activity, learners use a "function machine" to collect and organize simple data. The function machine in this case is a cardboard box and the input/output data are paper fish.

1 cent - $1 per group Ages 4 - 6 10 to 30 minutes
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In this math lesson, learners use slices of bread and geoboards to explore several ways to divide a rectangle in half. Learners also identify equivalent fractions that represent one-half.

$5 - $10 per group Ages 6 - 11 1 to 2 hours
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In this math lesson, learners practice reading charts and graphs by creating and interpreting glyphs.

1 cent - $1 per student Ages 8 - 11 45 to 60 minutes
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In this math game (Page 15 of the Dining Out! PDF), learners figure discounts and/or profit increases for various food totals. Learners add decimals to $100.

1 cent - $1 per group Ages 8 - 14 30 to 45 minutes
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In this genetics meets math activity, learners take inventories of their own easily-observable genetic traits and compare those inventories with other learners in groups.

1 cent - $1 per group Ages 8 - 14 30 to 45 minutes
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In this math activity (Page 8 of the Dining Out! PDF), younger learners select items from a menu and count out the total amount needed using the fewest bills and coins possible.

1 cent - $1 per student Ages 8 - 14 30 to 45 minutes
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In this math lesson, learners extend their understanding of basic probability concepts as they learn to name all of the possible outcomes of an event as well as ways to express the likelihood of such

$1 - $5 per group Ages 8 - 11 45 to 60 minutes
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In this math lesson, learners identify and compare unit costs of given items. Learners use computation skills, problem solving and number sense to find the cost of an ounce of cereal.

$10 - $20 per group Ages 8 - 11 45 to 60 minutes
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This is a classic exercise for visualizing the scale of the Solar System.

1 cent - $1 per group Ages 6 - adult 45 to 60 minutes
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In this activity, learners make cool boxes out of old (or new) greeting cards or postcards.

free Ages 11 - 14 30 to 45 minutes
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In this math lesson, learners use the setting of a flower-making fundraiser to explore a variety of patterns. Learners examine the patterns in a flower design made of triangles surrounding a square.

$1 - $5 per group Ages 6 - 11 1 to 2 hours
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In this activity, learners build a 1:140 "scale model" of NASA's X-33 Reusable Launch Vehicle (RLV) Technology Demonstrator, and investigate how the model dimensions compare to the real vehicle.

1 cent - $1 per group Ages 8 - 14 1 to 2 hours
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In this math-based activity, learners model the intensity of light at various distances from a light source, and understand how astronomers measure the amount of sunlight that hits our planet and othe

$1 - $5 per group Ages 11 - adult 45 to 60 minutes
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In this activity (page 18 of PDF), learners will measure the volume of impact craters created by projectiles of different masses.

$10 - $20 per student Ages 8 - 14 45 to 60 minutes
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In this math lesson, learners explore probability.

$1 - $5 per group Ages 6 - 8 1 to 7 days
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In this health, cooking, and math activity, learners explore nutrition and examine nutrition labels.

Over $20 per group Ages 8 - 14 2 to 4 hours
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In this math lesson, learners are introduced to proportional reasoning through modeling, sharing, and questioning techniques.

$5 - $10 per group Ages 8 - 11 1 to 2 hours