Lake-Top Living

Lake-Top Living

What happens when a lake grows and shrinks according to the season? How do people live and work on a lake that’s always moving its shores? Residents on Tonlé Sap in Cambodia solved this problem by building a floating village. Imagine you are building a brand new floating village. What do you think would be good building materials? Use the scientific method to think about different ways to make a cardboard structure float.
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River Watching

River Watching

From Rivers and Streams!

Observing things closely is an important part of being a scientist. In this activity, you’ll watch a river to see what you can notice about it.

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Be a Wetland Detective

Be a Wetland Detective

From Marshes and Swamps!

Is there some kind of wetland near your home? Do you live near a river or lake? Or next to the ocean? Ask an adult to help you identify a local wetland to explore.

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Ocean Journal

Ocean Journal

From Oceans and Seas!

Captain James Cook (1728–1779) was a famous British explorer. On his journey to the Arctic Ocean, he kept a journal and recorded his observations about Arctic ice. Today, scientists use Captain Cook’s notes to understand how sea ice in the Arctic is changing. You, too, can record your observations in a science journal. Who will read about your discoveries in the future?

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Darwin's Finches

Darwin's Finches

From Evolution

In 1835, Charles Darwin visited the Galapagos Islands, in the Pacific Ocean. While there, he noticed several different types of finches. These birds were very different from the finches Darwin had seen in England. The finches on the different islands had beaks of various sizes and shapes. A finch's beak structure determines what it can eat most efficiently. A finch with a tiny beak cannot easily crack large seeds. Finches with large beaks have trouble...

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