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Slowing the Flow
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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.

Make a Terrarium
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In this activity, learners make a miniature greenhouse or "terrarium" to explore the greenhouse effect.

Endangered!
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While playing a game, learners discover how the Endangered Species Act works in the United States. Learners move along a game board by answering questions correctly.

Draw a Monarch Butterfly: Scientific Illustration
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Ivy Rutzky, a scientific assistant at the American Museum of Natural History, introduces an activity where learners create a scientific illustration of a monarch butterfly.

Make a DNA Model
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In this activity, learners make a 3-D model of DNA using paper and toothpicks. While constructing this model, learners will explore the composition and structure of DNA.

Buried Bones
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In this activity, pairs of learners will create two make-believe dig sites by burying chicken bones in plaster of Paris--a powder that hardens when wet.

Evolution in Action: Isolation and Speciation in the Lower Congo River
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In this guided discussion activity, learners watch a video about Central Africa's Lower Congo River, one of the most biologically diverse rivers in the world.

Making a Field Journal
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In this activity, Christina Elson, an archaeologist from the American Museum of Natural History, guides learners as they investigate an "artifact" and record their observations in a field journal.

Create a Coral Reef
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Educator Amy O'Donnell from the American Museum of Natural History guides learners to create a diorama of a coral reef.

Create Your Own Time Capsule
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In this archaeology-related activity, learners build their own time capsule and choose a storage location and a date to reopen it.

Mint Your Own Coin
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Coins are everyday objects which tell a lot about the people who use them.

Test Density with a Supersaturated Solution
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Learners create three solutions with different levels of salinity. They compare the density of these solutions by coloring them and layering them in a clear plastic cup and in a soda bottle.

Keeping a Field Journal
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In this activity, learners start their own field journal to better understand the wildlife in their area.

If Trash Could Talk
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Ancient trash tells archaeologists a lot about the past. In this activity, learners take a close look inside their trash can and think about the clues it offers about their lives.

Crazy Camouflage
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In this activity about camouflage, learners create a model that shows how a flounder is able to blend into a variety of environments.

Arctic Story Puzzles
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This activity has three story puzzles learners can solve to learn about life in the Arctic.

The Legend of the Flying Frog
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In this activity, learners listen to a story about a made-up endangered species--a flying frog! Learners print out six story pages and then draw the pictures and write the captions.