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In this activity, learners explore sound by constructing an instrument toy that buzzes when you swing it.

$1 - $5 per student Ages 6 - 11 10 to 30 minutes
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In this activity, learners will plan a snack within a budget. With a $20 limit (theoretical) to spend on snack for everyone, learners look over grocery store circulars and make their shopping lists.

free Ages 6 - 14 45 to 60 minutes
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This activity shows you how to make a mold terrarium using a jar and leftover food.

1 cent - $1 per group Ages 8 - 14 1 to 4 weeks
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In this outdoor activity and/or field trip, learners investigate the behavior of hopping animals.

$10 - $20 per group Ages 8 - 14 1 to 2 hours
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In this activity about light and reflection, learners discover that what you see is often affected by what you expect to see.

Over $20 per group Ages 8 - 14 5 to 10 minutes
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In this activity, learners will be able to measure themselves in nanometers. A nanometer is a billionth of a meter, a unit of measurement used in nanotechnology.

free Ages 6 - 18 5 to 10 minutes
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In this environmental health activity, learners investigate their breathing and pulse rates, and learn how these measurements are affected by physical activity.

1 cent - $1 per group Ages 8 - 14 1 to 2 hours
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This is a demonstration you can use to show learners how valves and pumps work in concert to move blood through the circulatory system.

1 cent - $1 per group Ages 6 - 14 5 to 10 minutes
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In this online simulation, learners can see adaptation and camouflage in action.

free Ages 8 - 11 10 to 30 minutes
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In this activity (page 59 of the PDF), learners spin and observe false eyelashes in jars of water (prepared at least 1 day ahead of time) to investigate the effects of different types of motion on the

$1 - $5 per group Ages 8 - 18 45 to 60 minutes
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In this activity (on page 2 of the PDF under GPS: Cactus Activity), learners will develop their own version of a tool used by biologists, a dichotomous key, by collecting all their left shoes.

free Ages 8 - 14 10 to 30 minutes
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This activity has learners interacting with live crayfish, but could be adapted for a variety of similar hardy and interesting organisms.

Over $20 per group Ages 4 - adult 10 to 30 minutes
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The Ancient Egyptians used a naturally-occurring salt from the banks of the Nile River, called natron, to mummify their dead.

$5 - $10 per group Ages 8 - 18 1 to 4 weeks
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In this activity (page 2 of pdf), learners craft a model of a skate egg case and come to understand that cartilaginous fish such as sharks and shakes employ reproductive strategies that differ from th

1 cent - $1 per student Ages 6 - 11 1 to 7 days
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In this activity, learners will explore the ways natural materials can produce sounds. Appropriate for any age, learners can make individual music or create a symphony with others.

free Ages 4 - adult 10 to 30 minutes
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In this activity (page 7 of the PDF), learners will investigate the contents of owl pellets. Learners will discover how owls digest their food as well as the kind of animals they eat.

$5 - $10 per student Ages 8 - 14 30 to 45 minutes
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An outdoor scavenger hunt helps learners consider the theme of "What Is Life?" Learners explore what living organisms are, including how organisms meet basic needs of food, shelter and water to surviv

$1 - $5 per student Ages 6 - 14 45 to 60 minutes
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Bones are stiff, which helps us lift heavy things and walk around, but they are also somewhat flexible, which lets them bend slightly.

$10 - $20 per group Ages 8 - adult 30 to 45 minutes
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In this version of tag, a large group of learners model how the body fights infection. Learners act as germs, as lymphocytes, and as the body's cells threatened by germs.

$1 - $5 per group Ages 8 - 11 30 to 45 minutes
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In this activity, learners make homemade journals featuring seashell rubbings. First, learners transfer the texture of a seashell onto a piece of paper using a crayon.

$1 - $5 per student Ages 6 - 11 30 to 45 minutes