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![](/images/global/spacer.gif) Sizing Up the Universe How big? How far? Explore the universe by starting in your own backyard.
![](/images/global/spacer.gif) Smithsonian Education |
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![](/images/global/spacer.gif) Prehistoric Climate Change Use fossils as a thermometer to read temperatures 55 million years ago.
![](/images/global/spacer.gif) Smithsonian Education |
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![](/images/global/spacer.gif) Digging for Answers Search the web and beat the clock in this new game.
![](/images/global/spacer.gif) Smithsonian Education |
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![](/images/global/spacer.gif) Sizing Up a Squid Learn all about the giant squid, a real-life sea monster.
![](/images/global/spacer.gif) Smithsonian Education |
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![](/images/global/spacer.gif) Fruitful Exercises Try matching four kinds of food with the trees they come from.
![](/images/global/spacer.gif) Smithsonian Education |
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![](/images/global/spacer.gif) The Wright Brothers Learn about flight, send e-cards, and conduct experiments.
![](/images/global/spacer.gif) Air and Space Museum |
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![](/images/global/spacer.gif) Walking on the Moon Experience the thrill of the race to space.
![](/images/global/spacer.gif) Smithsonian Education |
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