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Investigate a flower's power of marketing by making an imitation flower that successfully signals a bee (or other pollinator of your choice) to visit.

1 cent - $1 per student Ages 4 - 11 5 to 10 minutes
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Learners test two jars containing soil, one covered and one open, for changes in temperature. After placing the jars in the Sun, learners discover that the covered jar cools down more slowly.

1 cent - $1 per group Ages 8 - 14 10 to 30 minutes
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Learners investigate the concept of humidity by using a dry and wet sponge as a model. They determine a model for 100% humidity, a sponge saturated with water.

1 cent - $1 per group Ages 8 - 14 30 to 45 minutes
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Learners observe a model of a cell and its chromosomal DNA made from a plastic egg and dental floss. Use this model to illustrate how much DNA is held in one cell.

1 cent - $1 per group Ages 8 - 18 1 to 2 hours
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In this activity about the baroreceptor reflex (BR) arc (page 123 of the PDF), learners discover the importance of maintaining adequate arterial blood pressure through a role playing exercise.

1 cent - $1 per group Ages 8 - 18 45 to 60 minutes
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Learners test two jars, one containing plain air and one containing carbon dioxide gas, to see their reactions to temperature changes.

1 cent - $1 per group Ages 8 - 14 10 to 30 minutes
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Create 3D glasses and use them to explore color, light and optics. Fool your brain into 'seeing' three dimensions on a flat surface!

1 cent - $1 per student Ages 6 - 18 10 to 30 minutes
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In this activity, learners will simulate the interactions between a predator population of gray wolves and a prey population of deer in a forest.

1 cent - $1 per group Ages 8 - 14 1 to 2 hours
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In this activity about the brain and sleep (on page 138 of the PDF), learners measure their resting breathing rates. Learners will discover that breathing frequencies vary amongst individuals.

1 cent - $1 per group Ages 8 - 18 45 to 60 minutes
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This activity (on pages 35-43) lets learners analyze a "herd of elk" to detect the spread of a bacterial disease called brucellosis.

1 cent - $1 per group Ages 8 - 14 45 to 60 minutes
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In this activity, learners explore dinosaur fossils and a dig site. Learners work in groups to analyze a dig site map and match bones to a skeletal drawing of Kelsey (a Triceratops).

1 cent - $1 per group Ages 6 - 8 45 to 60 minutes
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In this activity (1st on the page), learners conduct a series of tests to find out which of their hands is more dominant. In other words, are they right-handed or left-handed?

1 cent - $1 per student Ages 8 - 14 10 to 30 minutes
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This is an activity about our sense of smell and how it compares to sharks' super noses. Learners will create varying solutions of water and perfume.

1 cent - $1 per student Ages 6 - 11 10 to 30 minutes
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This great "re-use it" activity will demonstrate how to transform a greeting card into a box. Once constructed, the box can have many uses like holding special notes or keepsakes.

1 cent - $1 per student Ages 6 - 14 5 to 10 minutes
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In this activity, learners explore how their sense of smell affects their taste buds. Learners taste different flavored jelly beans while holding their nose.

1 cent - $1 per student Ages 4 - 14 Under 5 minutes
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In this activity, learners explore how dinosaurs are named and what their names mean. Learners listen to "The Littlest Dinosaurs" by Bernard Most.

1 cent - $1 per group Ages 6 - 8 45 to 60 minutes
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Somatic Cell Nuclear Transfer (SCNT) is a cloning method that involves transferring a nucleus from a somatic cell of the individual to be cloned to an enucleated egg.

1 cent - $1 per group Ages 11 - 18 1 to 2 hours
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In this activity, learners investigate how wind can create surface currents and how waves move. Learners also discover how wind can affect oil spills.

1 cent - $1 per group Ages 8 - 11 45 to 60 minutes
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In this activity, learners play a simple card game to learn the sequence of events in the transmission of nervous system signals.

1 cent - $1 per group Ages 11 - 14 45 to 60 minutes
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In this online brain stumper, the bottom half of a series of letters is covered. You may think you know what it says, but remove the black bar to see if you're right.

1 cent - $1 per student Ages 8 - 14 5 to 10 minutes