Grade 3

What does S.O.S. mean? Who might use S.O.S.? Sometimes we have to do things we don't think we can do. Have you ever had to do that? What happened? How did you feel before, during and after… Read More →

Our world is full of sounds. There are people sounds, animal sounds, sounds of nature and machine sounds. Sounds are made by vibrations. Vibrations are movements you can feel but not see.… Read More →

Much of what you experience—from the things you see to the sounds you hear—travels to you in waves. But how do sound and light waves work? For thousands of years, scientists have been testing Read More →

Without sound there would be no chatting, laughing, bird song, or listening to music. But what exactly is sound and how do our ears and brain ensure that we get to enjoy it? In this… Read More →

An interactive introduction to musical instruments with 50 original compositions to listen to—from the kazoo to the bassoon. What does a double bass or a sitar sound like? What's the… Read More →

South America is home to the world’s largest rain forest. The Amazon River runs through it. More than 350 millions people and a huge variety of plants and animals live there. Learn more about Read More →

Where in the world can you see the world's largest rodents, galloping around in herds? Where can you find the world's largest river or the highest waterfall? The continent of South America! Read More →

Pack your bags! We’re headed to South Korea. On this whirlwind tour, you’ll learn all about the country’s landscape, culture, people, and more. We’ll explore coastal islands and mountain… Read More →

Have you ever watched video of astronauts walking on the moon? Margaret Hamilton programmed software that helped get them there. As a girl, Hamilton loved math and science. She grew up during Read More →

Robots are out of this world! Space robots go places that humans aren't able to explore. Learn how these robots are made, what they do, where they go in outer space, and much more. Robots… Read More →

Explore outer space through interactive augmented reality experiences! Outside the International Space Station, temperatures can reach 250˚F (121˚C) in sunlight and drop to -250˚F (-156˚C) in Read More →

Space is the name for the areas of the universe that are between planets, stars, and galaxies. Right now, there are people living in space; they are astronauts. Astronaut is an old word… Read More →

Explore outer space through interactive augmented reality experiences! Space is a dangerous place for humans. That's where robots and rovers come in! The Curiosity rover drills into a rock on Read More →

Spacemanatee! is a story about Anna Lee, a sweet-natured manatee whose dreams are even bigger than her mighty flippers. Every night, Anna Lee Manatee meets with her friend, The Loon, to… Read More →

Don't panic, but you're alone on a space ship roaring away from Earth! Solve a series of puzzles to pilot the ship to the Moon, then refuel for the return to Earth. Devised by an expert on… Read More →

Since the beginning of the space race, robots have helped astronauts learn about space. Robots repair spacecraft, help with experiments, explore planets and moons, and more. Catch an inside… Read More →

Do you love shiny UFOs or high-tech Mars rovers? Whatever your favorite space creation, you’ll soon be drawing out-of-this-world designs like a pro with the help of this fun book. Just follow Read More →

Explore outer space through interactive augmented reality experiences! Humans first placed a space station in orbit around Earth in 1971. Construction of the International Space Station (ISS) Read More →

As a child, Jeff's head was often in the clouds. As an astronaut, he journeyed far beyond them. On his final mission, Jeff brought a miniature Torah into orbit for an out-of-this-world… Read More →