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SMILE. It's fun. is an online collection of math and science activities available to anyone, free of charge. Whether your "classroom" is an active volcano, the shark tank at the local aquarium, or your own kitchen table, you've come to the right place.

Disease Detectives Disease Detectives
This online exhibit introduces you to three patients, all of whom are suffering from different illnesses. Examine each interactive mannequin-taking their temperatures and listening to their hearts, lungs, and bowels-to determine what's making them sick.

Wild Music Wild Music
Whales compose, bullfrogs chorus, songbirds greet the dawn, and people everywhere sing and dance. What do we all have in common?

Tissues of Life Tissues of Life
Meet tissue researchers and learn about the four types of tissues that make up the human body. Play Tissues Invaders or one of our other games and test your knowledge of viruses, bacteria, and how your body works to defend itself!

Low Life Labs Low Life Labs
Find out what robot designers are learning from ants, cockroaches, and other simple life-forms and how the knowledge gleaned from these creatures' natural adaptations to their environments is used to make robots even better.

PIE Playful Invention and Exploration Network
is an approach to using new technologies that integrates art, science, music, and engineering. The PIE network website was made to enable and inspire more people to create, invent, and explore -- using a combination of traditional craft materials and new digital technologies.

Science Buzz Science Buzz
Science Buzz offers opportunities to dig deeper into science headlines, and gives you a chance to talk with each other and with scientists about your questions and concerns.

Collectors' Corner Collectors' Corner
We have hundreds of objects at the Collectors' Corner. Bring in your cool finds, tell us about them, and earn points you can trade for other items!

Mysteries of Çatalhöyük Mysteries of Çatalhöyük
Investigate the many questions and mysteries surrounding one of the world's oldest cities. Make a neolithic dinner, read the Mystery of the Flint Dagger, explore the process of archaeology, or even tour a Çatalhöyük home!

Thinking Fountain Thinking Fountain
Home of the famous Name That Candy Bar game, you'll find a wellspring of science and art ideas in the Thinking Fountain! Learn about shapes, tropical rain forests, pneumatics, worms, roller coasters, bubbles and much, much more.

The Greatest Places The Greatest Places
Journey to seven of the most geographically dynamic locations on earth! Trek down the Amazon river, take in all 2.5 miles of Iguazu Falls, meet nomads roaming the high plateaus of Tibet, explore the glaciers of Greenland, and more.

Habits of the Heart Habits of the Heart
Explore resources for students and teachers interested in learning about the cardiovascular and circulatory systems. Movies of the heart in action, online and at-home activities, links to other sites about the heart and lungs, and much more!

Monarchs and Migration Monarchs and Migration
Teachers, students, and families across the country are exploring Monarchs, butterflies, and the mystery of migration! Join us as we investigate the world of the Monarch butterfly.

The Sound Site The Sound Site
Developed in partnership with the Minnesota Orchestra, the Sound Site has activities, discussions, and multimedia explorations about sound from both a scientific and artistic perspective. Close your eyes, open your ears, and explore the world of sound!

Maya Adventure Maya Adventure
Browse through images from the Science Museum's anthropological collections, discover ancient and modern Maya culture, or try a hands-on experiment and learn how a cenote (a deep, water filled sinkhole in limestone) is formed. Start your adventure now!

From Windmills to Whirligigs From Windmills to Whirligigs
Meet Vollis Simpson and see how his windmill-powered whirligigs connect science with art using the power of wind. Then try making your own whirligig or other air-powered contraption!