Explore the culture, beliefs, and people of the Tlingit Indians of the Northwest Coast.

An exhibit from the Smithsonian includes 70 paintings and sculptures by famous American Western artists such as Catlin, Baker, Bierstadt, and Remington.

Flip this interactive card to start learning about chromosomes, tiny, spaghetti-like packages of information. Answer multiple-choice and fact-or-fiction questions and review some fast facts about chromosomes.

Flip this interactive OLogy card and start learning bite-size pieces of useful information about the common dolphin, such as its habitat, diet, and physical characteristics.

Turn over this interactive OLogy card and start learning bite-size pieces of useful information about how animals communicate.

Turn over this interactive card to find fast facts, questions and answers, and similar bite-size pieces of information to help you understand the continental shelf.

Learn a few facts about the Jurassic period from this interactive Ology card that also includes questions that can be answered. There is some information about Pangaea and dinosaurs.

Flip this interactive OLogy card to find questions and answers, fast facts, and other bite-size pieces of information to help you understand important characteristics of invertebrates.

Uncover facts about invasive species by turning over this interactive OLogy card.

Illustrated essay on British portraiture, 1600-1800. Encompasses the Tudor, Stuart, and Georgian periods.

This comprehensive exhibit focuses on the wonders of microorganisms, what they are, how they can affect our daily lives, and how they can be manipulated. Videos, games, and animations are included. Teacher resource link explains each...

If you look up at the sky on a clear night, you may see a red dot among the stars. This dot is Mars, named in ancient times after the Roman god of war. Although no one has ever visited this red planet, we know a lot about it. This site...

An experiment to test what happens when ocean water hits a freshwater estuary. Each step is demonstrated with photographs and the difference between salinity and density is explained.

Do you have what it takes to go on a space mission to the Red Planet? Think you can handle it? Take this quiz to find out!

Are plates of armor, horns, exceptionally large heads, and bony plates examples of dinosaur display or defense? Visitors to this resource will learn what scientists have concluded about the purpose of these peculiar dinosaur features.

With a number of images and text, characteristics of the Yellow-spotted Salamander are discussed.

Bite-size introduction to two scientists-Hubble and Lemaitre-who played key roles in formulating the theory of the origin of the universe known as the big bang. Includes an interactive timeline on which you can plot out the approximate...

Using an example of light bouncing back and forth between two mirrors in a rocket, time dilation is explained in this resource. Step-by-step calculations using Einstein's time dilation equation are shown.

An interactive series of pages on the many treasures found at Sutton Hoo, the burial site of an ancient Anglo-Saxon king.

Design and test your own all-terrain space rover with this app.

Get started on the road to becoming an expert stargazer by following these recommendations for identifying stars, planets, and constellations. Includes an example of a journal that can be used as a record of your investigations.

Make a wind vane, rain gauge, and barometer and learn how to measure wind direction, rainfall, and air pressure.

Illustrated instructions for how to make a model of an atom (an atom mobile).

An online exhibition which documents a scientific expedition up the Congo river in the early 1900s. You can view the complete photos, documents, and equipment by clicking on the left side navigation bar.