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What would happen if gravity didn't exist? People and objects would float into space! With this basic introduction to gravity, young readers will discover how gravity works and how it affects everything in our world and beyond.

Take a look out the window. What do you see? People, cars, bikes, birds, and more are all on the move. With this basic introduction to motion, young readers will discover the three laws of motion, what they mean, and how they affect our lives every day.

How do you get something to move? You use force to move it with a push or a pull. With this basic introduction to forces, young readers will learn about physical forces and how they are at work in our world every day.

Journey north to the cold tundra and discover how animals and plants in the Arctic survive in an interconnected food web in this illustrated narrative nonfiction. How do animals and plants survive in the coldest ecosystem on earth? Easy--it's not always...

Take an illustrated narrative nonfiction journey to South America and discover how animals and plants in the Amazon Rainforest survive in an interconnected food web. Hot and humid, the Amazon is home to a diverse range of animals and plants. Toucans,...

Take an illustrated narrative nonfiction journey to a North American prairie and discover how animals and plants in a grassland survive in an interconnected food web. The wide-open prairie is home to many grass-grazing herbivores, including the prairie...

Why does everyone want to go to Mars and not Venus? Spark early readers' natural curiosity about planets with this inquiry-based nonfiction approach to Venus. Venus is sometimes called Earth's twin planet - its evil twin. Did you know Venus is so hot...

How did Uranus get its silly name, anyway? Spark early readers' natural curiosity about planets with this inquiry-based nonfiction approach to Uranus. Poor Uranus - always the butt of jokes. Did you know that gas in its atmosphere makes the planet smell...

What's with those huge rings? Spark early readers' natural curiosity about planets with this inquiry-based nonfiction approach to Saturn. Everyone loves Saturn's amazing rings. But did you know the planet has a storm at its north pole shaped like a giant...

How'd this planet get so blue? Spark early readers' natural curiosity about planets with this inquiry-based nonfiction approach to Neptune. Neptune is the farthest planet from the sun. But did you know it has the fastest winds in the solar system? Or...

How hot is this tiny planet? Spark early readers' natural curiosity about planets with this inquiry-based nonfiction approach to Mercury. You know Mercury is the closest planet to the Sun. But did you know it's only a little bigger than Earth's Moon? Or...

This book for elementary readers outlines key dates throughout this change maker's life. Engaging photographs and a timeline depict each step in paving the way for others, from Sally Ride's early ambition with tennis through her first two space missions...

In Telescope, readers will learn about what a telescope does to help scientists explore space. Text written in simple sentences that help develop word recognition and improve reading skills.

In Space Suit, readers will learn about what a space suit does to help astronauts explore space. Text written in simple sentences that help develop word recognition and improve reading skills.

In Space Station, readers will learn about what a space station does to help astronauts and scientists explore space. Text written in simple sentences that help develop word recognition and improve reading skills.

In Space Shuttle, readers will learn about what a shuttle does to help astronauts and scientists explore space. Text written in simple sentences that help develop word recognition and improve reading skills.

In Rover, readers will learn about what a rover does to help scientists explore space. Text written in simple sentences that help develop word recognition and improve reading skills.

Spend a day and night in the desert! Learn about this dry habitat through the unique animals that call it home. Stand with meerkats during a watchful hunt for insects. Spot a jackrabbit taking a shaded midday nap. Join a desert tortoise as it dines on...

Spend a day and night in the forest! Learn about this wooded habitat through the fascinating animals that call it home. Leap from tree to tree with a squirrel searching for breakfast. Pounce with a fox on the forest floor. Soar with a red-tailed hawk as...

Great white, bull, and tiger sharks are some of today's most talked-about sharks. But have you met the sharks of yesterday? Each prehistoric shark had its own amazing--and sometimes strange--features. The scissor-tooth shark had teeth in a spiral shape...