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In this nutrition and estimation activity (page 12 of PDF), learners estimate serving sizes of different foods and compare their estimates to serving size information provided on nutrition food labels

$5 - $10 per group Ages 8 - 14 45 to 60 minutes
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In this activity on page 1 of the PDF, learners compare the relative sizes of biological objects (like DNA and bacteria) that can't be seen by the naked eye.

free Ages 8 - 18 10 to 30 minutes
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In this activity, learners use two different techniques to estimate how many little things fit into one bigger thing.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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In this activity, learners model the gravitational fields of planets on a flexible surface.

$5 - $10 per group Ages 8 - 14 30 to 45 minutes
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Build a house you can fit inside, using cardboard tubes.

1 cent - $1 per group Ages 6 - 14 45 to 60 minutes
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In this activity (located on page 2 of PDF under GPS: Baby Dinosaurs Activity), learners will look for a relationship between skull size and body length among various dinosaurs.

1 cent - $1 per group Ages 8 - 14 30 to 45 minutes
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In this demonstration, learners compare the relative sizes and masses of scale models of the planets as represented by fruits and other foods.

$10 - $20 per group Ages 8 - 14 30 to 45 minutes
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In this activity, learners dissect a piece of pizza to learn about nutrients important for health.

$5 - $10 per group Ages 11 - 14 45 to 60 minutes
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In this simulation of natural selection, learners use binder clips in three different sizes to represent the diversity of beak sizes in a bird population.

$5 - $10 per group Ages 11 - 18 45 to 60 minutes
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In this activity (page 23 of PDF), learners conduct an experiment to determine how the size and mass of a projectile affects the area and the volume of an impact crater.

$10 - $20 per group Ages 8 - 14 45 to 60 minutes
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In this activity, learners explore a scale by comparing objects, which look similar but have different weights. Learners predict and then measure the weights of various objects using a scale.

free Ages 4 - 6 10 to 30 minutes
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This lesson focuses on how nanotechnology has impacted our society and how engineers have learned to explore the world at the nanoscale.

$1 - $5 per group Ages 8 - 14 1 to 2 hours
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This is a hands-on activity exploring how nanoscale particles are used in mineral sunblocks to increase their transparency.

$10 - $20 per group Ages 6 - adult 10 to 30 minutes
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In this activity on page 3 of the PDF, learners visualize the relative size and structural differences between microbes that have the potential to cause disease.

$10 - $20 per group Ages 11 - 18 1 to 2 hours
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In this activity, learners explore the relative sizes and distances of objects in the solar system.

$1 - $5 per group Ages 8 - 18 30 to 45 minutes
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In this activity, learners investigate whether more people are squares or rectangles. People with similarly sized heights and arm spans are classified as squares.

free Ages 6 - 11 10 to 30 minutes
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In this activity, learners observe live fish in tanks to consider how their body structures are related to their behaviors and habitats.

$5 - $10 per group Ages 4 - adult 10 to 30 minutes
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In this activity, learners discover the primary physical properties used to separate pure substances from mixtures.

$1 - $5 per group Ages 8 - 18 1 to 7 days
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In this lesson, learners cut paper into very small pieces to explore the small size of quarks, the smallest thing we know of on Earth.

1 cent - $1 per student Ages 6 - 11 45 to 60 minutes
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In this lab exercise, learners explore diffusion, cell membranes and particle size using beets and three alcohols.

$10 - $20 per group Ages 14 - 18 10 to 30 minutes