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United States Presidents, The (Checkerboard Library)

Learn about the individuals who have held this important office in the United Stated Presidents series. Each book explores one president?s childhood, time in office, accomplishments, and legacy. Discover what it takes to be presidents, how a president is elected, and how the US Government works. Read this series to experience history through the leaders who shaped it.

Universe and You, The

During the night, as we sleep, a beautiful celestial dance is taking place. While Earth seems solid and still, it's actually spinning on its axis and circling the sun. Joining Earth in this orbit around the sun are the other seven planets in our solar system, along with dozens of moons and millions of comets and asteroids. Containing our solar system is the wondrous Milky Way galaxy, with its billions of stars, just like our own sun, swirling and whirling around. And on from there are the billions of galaxies with their own stars swirling and whirling into the ever-expanding space called our universe. When the sun rises on a brand new day, the dance continues. Through lyrical text, award-winning science writer Suzanne Slade (June Almeida, Virus Detective! The Woman Who Discovered the First Human Coronavirus) takes young readers on an exploration of our solar system, galaxies beyond, and finally the universe as a whole. Back matter includes science facts.

Universe Ate My Homework, The

Abby hates doing homework. In fact, she'll do whatever it takes to get out of it-like using her homework to make a baby universe! She finds some instructions in her dad's study, works up lots of energy, and, with the help of her dog, Comet, creates one. She's tempted to escape into the universe-where she's sure she wouldn't have to do homework ever again-but ultimately decides to stay right where she is with the family she loves.

Universe Is a Tree, The

This collection of stories, proverbs, and poems about trees from around the world reveals that a tree's roots not only go down deep into the earth, but its branches also reach up and out into the universe, connecting us all.

Unnatural Disasters: Human Error, Design Flaws, and Bad Decisions (21st Century Skills Library)

Human modification of the environment always carries a risk of accident and folly. With this series, young readers explore the causes and consequences of some of the most major environmental catastrophes of the past 100 years. Guided by compelling questions such as, ""What led to these disasters?,"" ""Who was impacted by them?,"" and ""What changed in their aftermath?"" this interdisciplinary series blends social studies and science content. Ultimately, it pushes students to consider how humans can meet their need for resources in a safe, sustainable way. Books include table of contents, index, glossary, author biography, and timeline.

Unofficial Guides (21st Century Skills Innovation Library)

The Unofficial Guides series explores the various aspects of today's most popular games and programs including LEGO Mindstorms and Minecraft. Each collection covers topics ranging from basic to advanced. This series is perfect for the hands-on techie. This series is perfect for the younger hands-on techie. Includes table of contents, glossary, and index-as well as sources for further reading.

Unofficial Guides Junior (21st Century Skills Innovation Library)

The Unofficial Guides Junior series explores the various aspects of the enormously popular Minecraft™, Fortnite, Roblox, and Pokémon GO programs for younger readers. This collection, covering topics across the games in a clear and concise way, is perfect for the younger hands-on techie.

Unplug with Science Buddies

It's time to turn off your device! This fun, maker-focused series features projects from project database creators, Science Buddies®, and encourages readers to step away from the screen and create with their hands.

Unplugged Activities for Future Coders

Computer science is the at the heart of the world's biggest industries, but getting started in programming can be tough. Coding courses can be expensive, and not everyone has access to them. This must-have set provides access to computer science, without even requiring a computer. Instead, this set uses common materials kids can find around the house to both learn the building blocks of modern coding and get hands-on experience putting important coding principles to use.

Unplugged: Ella Gets Her Family Back

When Ella finally makes her move, it gets everyone's attention. At first there is some confusion--could Ella just want a cell phone of her own?† But Ella makes clear that what she really wants is her family back. Will they all agree that it's time to make some changes? And what word do you think Ella will use the next time she plays Hangman with her brother Carlos? This is a lively book about the issue of managing technology so that it can become more family friendly.