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Learners explore how the attractive forces between water molecules create surface tension and allow certain objects to float on the surface of water.

$1 - $5 per group Ages 8 - 14 30 to 45 minutes
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In this activity about physical stress (page 28 of PDF), learners discover that muscles and bones need to work to stay strong.

$1 - $5 per group Ages 6 - 11 1 to 4 weeks
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In this thought-provoking activity, learners plan a hypothetical project to build and operate wind turbines in their community.

free Ages 8 - 14 2 to 4 hours
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In this activity about combustion and energy, learners observe a burning candle in a sealed jar and the burning of white sugar.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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In this activity, learners make plaster casts of an animal track to learn more about animals and animal behavior.

$10 - $20 per group Ages 8 - 14 45 to 60 minutes
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In this activity, learners take an indoor nature walk and discover various objects that have been brought in from the outdoor environment.

$10 - $20 per group Ages 11 - 14 30 to 45 minutes
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In this activity about heart health (on page 34 of the PDF), learners measure their own blood pressure using an electronic blood pressure monitor with a self-inflating cuff (included in cost of materi

Over $20 per group Ages 8 - 14 1 to 2 hours
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In this activity, learners will explore trends in shark populations using shark landing data from the National Marine Fisheries Service.

free Ages 14 - 18 45 to 60 minutes
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Over the course of several days, learners explore the property of water that helps plants move water from roots to leaves or gives paper towels the capacity to soak up water.

$1 - $5 per group Ages 8 - 14 1 to 7 days
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In this math activity, learners collect, organize, and analyze a set of data related to types of animals in the temperate forest.

$1 - $5 per group Ages 6 - 8 1 to 7 days
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In this activity, learners investigate how geometry plays a role in perspective.

1 cent - $1 per group Ages 8 - 18 45 to 60 minutes
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This is a fun activity about the power of the Sun and the importance of using sunscreen to protect your sensitive skin from its rays.

$1 - $5 per student Ages 4 - 11 4 to 24 hours
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In this activity, learners act as water molecules and travel through parts of the water cycle to discover that it is more complex than just water moving from the ground to the atmosphere.

free Ages 6 - 14 30 to 45 minutes
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In this activity, early learners simulate fossil prints in play dough or clay.

$1 - $5 per group Ages 4 - 6 10 to 30 minutes
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In this activity, learners model a population of deer and see how the number of deer changes over time.

free Ages 11 - 18 10 to 30 minutes
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In this experiment, pairs of learners explore how cold water affects circulation. The mammalian diving reflex (MDR) slows circulation when the body is exposed to cold water.

free Ages 8 - 18 30 to 45 minutes
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This activity (on pages 13-18) has learners build a model tree and then figure out how to make their tree stand up by itself.

$1 - $5 per group Ages 8 - 14 1 to 2 hours
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In this activity, learners compare frog eggs to chicken eggs to better understand why frog eggs need water. Learners compare a boiled chicken egg to "frog eggs" represented by boiled tapioca.

$1 - $5 per student Ages 4 - 14 4 to 24 hours
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This is an activity (located on page 3 of the PDF under Butterfly Wings Activity) about how visible light is affected by tiny nanoscale structures, producing iridescence on butterfly wings, soap bubbl

$10 - $20 per group Ages 8 - 14 1 to 2 hours
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In this outdoor activity that can be combined with a hike, learners try to match a "mystery community" by shaking animals out of different trees and shrubs.

$10 - $20 per group Ages 8 - 14 30 to 45 minutes