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Showing results 141 to 160 of 876

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This activity investigates how bark beetles can threaten forests by having learners estimate the number of infected trees from a photo.

$1 - $5 per group Ages 4 - 8 10 to 30 minutes
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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 are challenged to build a bird feeder using recycled materials from home and are encouraged to problem solve during the extensions.

$5 - $10 per student Ages 6 - adult 30 to 45 minutes
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This is an activity to do when there is a solar eclipse!

1 cent - $1 per group Ages 8 - adult 1 to 2 hours
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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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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
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In this activity (p.7-8 of PDF), learners examine fossil formation.

$10 - $20 per group Ages 8 - 11 10 to 30 minutes
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In this four-part laboratory exercise, learners investigate properties of Tobacco mosaic virus (TMV) including (1) symptoms induced by the virus in susceptible plants at the macroscopic and microscopi

Over $20 per group Ages 14 - 18 1 to 7 days
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In this outdoor activity/field trip, learners catch and observe water striders to explore their movement and feeding behaviors.

$10 - $20 per group Ages 6 - 14 1 to 2 hours
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In this activity on page 60, learners examine and simulate wildlife entanglement by experiencing what it might be like to be a marine animal trapped in debris.

1 cent - $1 per student Ages 6 - 11 10 to 30 minutes
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In this activity, learners will discover what it takes to be a frog. By dressing up like one, learners can visualize how each part of the frog plays an important role in surviving its habitat.

$10 - $20 per group Ages 4 - adult 10 to 30 minutes
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In this experiment using sprigs of Elodea, learners will observe a natural process that removes carbon dioxide (CO2) from Earth's atmosphere.

$10 - $20 per group Ages 11 - 14 1 to 2 hours
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In this activity related to climate change, learners examine albedo and the ice albedo feedback effect as it relates to snow, ice, and the likely results of reduced snow and ice cover on global temper

1 cent - $1 per group Ages 14 - 18 45 to 60 minutes
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In this activity related to climate change, learners create and explore topographical maps as a means of studying sea level rise.

$1 - $5 per group Ages 14 - 18 45 to 60 minutes
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In this activity, learners discover that one way to cool an object in the presence of a heat source is to increase the distance from it or change the angle at which it is faced.

1 cent - $1 per group Ages 8 - 14 1 to 2 hours
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In this design-based activity, learners explore environments, ecosystems, energy flow and organism interactions by creating a model biodome. Learners become engineers who create model ecosystems.

$10 - $20 per group Ages 11 - 14 4 to 24 hours
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In this activity, learners will build a design and build a place for pollinators to drink from.

$1 - $5 per student Ages 4 - adult 1 to 7 days
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In this activity, learners explore the concept of permeability to better understand why amphibians are extremely sensitive to pollution.

1 cent - $1 per group Ages 4 - 14 4 to 24 hours