Ciencias

Thanks to the development of agriculture, our Earth can feed the almost 8 billion people that call it home. But the challenge facing us today is how to make the practice of large-scale farming sustainable. We have learned how to use alternative energies = like solar and wind power = to run our farms. We have also learned how to use the land and the animals on it in a more environmentally friendly way. Green Farming will show you how.

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What would a green future look like? Will trains and airplanes be powered by the sun? Will we have homes that have zero impact on the environment? The most pressing challenge facing us today is how to ensure a healthy Earth for ourselves and future generations. This STEM-based set of A True Books introduces students to the engineering innovations that can help us reach those goals. Interesting information is presented in a fun, friendly way = and in the simplest terms possible = and will inspire kids to start envisioning and enacting a more sustainable future.

We use a lot of energy to power our lives = from our homes and cars to our tablets and handheld games. The challenge facing us today is finding sustainable energy methods that will ensure a green future. There are seven different types of green energy = and they are the only types that don't pollute our Earth. We have learned how to harness the power of the sun, wind, water, and Earth. And technological innovations have allowed us to put these alternative energies to work in our everyday lives. Green Energy will show you how.

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What would a green future look like? Will trains and airplanes be powered by the sun? Will we have homes that have zero impact on the environment? The most pressing challenge facing us today is how to ensure a healthy Earth for ourselves and future generations. This STEM-based set of A True Books introduces students to the engineering innovations that can help us reach those goals. Interesting information is presented in a fun, friendly way = and in the simplest terms possible = and will inspire kids to start envisioning and enacting a more sustainable future.

Discover the main systems of our amazing human body with this new series of books!

Our respiratory system is responsible for cleaning the air that we breathe, supplying our bodies with oxygen, and getting rid of carbon dioxide. Did you know that you breathe in and out about 22,000 times a day? Or that your left lung is slightly smaller than your right? That leaves room in your chest for your heart! Learn all this and more in Respiratory System.

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The human body is a complex ⹀ and remarkable ⹀ machine. Digesting our food. Pumping our blood. Walking, running, and dancing. It takes our many body systems working together to keep us alive and living our lives to the fullest. This set of A True Books offers an in-depth look at our amazing bodies ⹀ one system at a time. Interesting information is presented in a fun, friendly way ⹀ and in the simplest terms possible ⹀ giving students a "behind-the-scenes" look at how their bodies work.

Discover the main systems of our amazing human body with this new series of books!

The blood that flows through your body constantly brings food and oxygen to your muscles, organs, and bones and carries away waste. And it is all powered by that magnificent muscle, your heart. Did you know that your heart beats about 100,000 times a day? Or that the blood in your body travels a total of 12,000 miles daily? That's more than four times the width of the United States from coast to coast! Learn all this and more in Circulatory System.

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The human body is a complex ⹀ and remarkable ⹀ machine. Digesting our food. Pumping our blood. Walking, running, and dancing. It takes our many body systems working together to keep us alive and living our lives to the fullest. This set of A True Books offers an in-depth look at our amazing bodies ⹀ one system at a time. Interesting information is presented in a fun, friendly way ⹀ and in the simplest terms possible ⹀ giving students a "behind-the-scenes" look at how their bodies work.

Discover the main systems of our amazing human body with this new series of books!

Digestion starts the minute you put food or a drink in your mouth. And by the time the process ends, your body has taken every bit of nutrition possible from your food. Did you know that the average person produces enough saliva in one year to fill a bathtub? Or that the small intestine is the longest part of the digestive system? Learn all this and more in Digestive System.

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The human body is a complex ⹀ and remarkable ⹀ machine. Digesting our food. Pumping our blood. Walking, running, and dancing. It takes our many body systems working together to keep us alive and living our lives to the fullest. This set of A True Books offers an in-depth look at our amazing bodies ⹀ one system at a time. Interesting information is presented in a fun, friendly way ⹀ and in the simplest terms possible ⹀ giving students a "behind-the-scenes" look at how their bodies work.

Our muscular system covers our bodies from head to toe. It helps keep us upright and gives us the power to stand, sit, run, smile, and more. Did you know that your muscles make up one-third of your body weight? Or that your tongue is made up of eight separate muscles? Learn all this and more in Muscular System.

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The human body is a complex—and remarkable—machine. Digesting our food. Pumping our blood. Walking, running, and dancing. It takes our many body systems working together to keep us alive and living our lives to the fullest. This set of A True Books offers an in-depth look at our amazing bodies—one system at a time. Interesting information is presented in a fun, friendly way—and in the simplest terms possible—giving students a "behind-the-scenes" look at how their bodies work.

Discover the main systems of our amazing human body with this new series of books!

The human brain is a natural wonder = the command center that, through a network of nerves, runs every other system in our bodies. Did you know that there are 100,000,000,000 neurons in your brain? Or that your funny bone is actually a nerve in the elbow, not a bone? Learn all this and more in Nervous System.

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The human body is a complex = and remarkable = machine. Digesting our food. Pumping our blood. Walking, running, and dancing. It takes our many body systems working together to keep us alive and living our lives to the fullest. This set of A True Books offers an in-depth look at our amazing bodies = one system at a time. Interesting information is presented in a fun, friendly way = and in the simplest terms possible = giving students a "behind-the-scenes" look at how their bodies work.

I See Insects introduces emergent readers to a variety of common backyard bugs while providing them with a supportive first nonfiction reading experience. Carefully crafted text uses high-frequency words, repetitive sentence patterns, and strong visual references to support emergent readers, making sure they aren't facing too many challenges at once. Carefully leveled text and vibrant photographs introduce the earliest readers to a variety of familiar insect species. Includes table of contents, photo labels, picture glossary, and index.

On a family trip to the Reniassance Fair, you meet a wizard who send you back to the Middle Ages! What happens next is up to YOU! Filled with excitement and hilarity, this compositional challenge lets you tell your very own story starring...YOU! Combining National Geographic Kids' photography and illustrations in colorful laugh-out-loud pages, this engaging, entertaining, and educational book introduces you to dinosaurs from the past, and invites you to enter their world imaginatively by combining your story with theirs.

You've just been transported back in time - to the land of the dinosaurs! What happens next is up to YOU! Filled with excitement and hilarity, this compositional challenge lets you tell your very own story starring...YOU! Combining National Geographic Kids' photography and illustrations in colorful laugh-out-loud pages, this engaging, entertaining, and educational book introduces you to dinosaurs from the past, and invites you to enter their world imaginatively by combining your story with theirs.

No se necesita hacer mucho para ahorrar agua.

Tomar medidas puede ser tan simple como ducharse en vez de darse un baño de tina o descubrir y arreglar una gotera en el baño o inodoro.

Los niños aprenden esto y más sobre lo que pueden hacer para ayudar en 10 cosas que puedo hacer para ahorrar agua.

From early successes such as Steamboat Willie and the Merrie Melodies series to modern masterpieces such as WALL-E and Spirited Away, the world of animated film and television has come a long way since its beginning. Readers will trace the history of animation from its earliest roots to its most recent successes and beyond. They will also learn about the different types of artists, engineers, and filmmakers who have made this incredible blend of art and technology possible throughout the decades. The complex text in this title allows readers to determine the main idea and explain how it is supported by key details. The diagrams, charts, and graphs add clarity and help students navigate the text.

In 1942, a man-made craft was launched into outer space for the first time in history. Since then, many of the world’s best and brightest minds have dedicated themselves to exploring the furthest reaches of the universe. Readers will learn about some of the greatest space missions in history and find out what today’s top engineers and scientists are doing to advance space exploration to new heights. They will also find out what it takes to begin a career in space exploration and how different workers can fill a variety of roles in the quest to reach distant planets and stars.

Discusses the history of 3D printing and the latest advancements in the field, as well as what it takes to land a career in the 3D printing industry.

War has been a fact of life ever since the dawn of civilization. But while armies once charged into battle with little more than wooden clubs or stone axes, centuries of innovation have led to a wide range of powerful and efficient weaponry. Readers will trace the history of weapons and other military technology, including such developments as guns, tanks, and guided missiles. They will also learn what today’s top engineers and scientists are working on and how these new weapons could change the way wars are fought.

Filled with excitement and hilarity, this compositional challenge lets you tell your very own story starring...YOU! Combining National Geographic Kids' photography and illustrations in colorful laugh-out-loud pages, this engaging, entertaining, and educational book takes you on an adventure through the wild west and invites you to enter a new world imaginatively by combining your story with theirs. You gaze over the dusty trail. It's quiet. Too quiet. All of a sudden, you see bandits below you! The chase is on.

It's a bright sunny day at the amusement park, and you can't wait to ride some rides! This isn't just any old outing, though. You'll never guess what―or who―you encounter. Filled with excitement and hilarity, this compositional challenge lets you tell your very own story starring...YOU! Combining National Geographic Kids' photography and illustrations in colorful laugh-out-loud pages, this engaging, entertaining, and educational book takes you on a fun-filled adventure through the amusement park and invites you to imaginatively enter a new world by writing your own wild and wacky story.

Filled with excitement and hilarity, this compositional challenge lets you tell your very own story set in America's national parks starring . . . you! Combining National Geographic Kids' photography and illustrations in colorful, laugh-out-loud pages, this engaging and educational book introduces you to the country’s greatest environmental treasures.
 
Can you imagine yourself in the middle of this adventure? Here's the scenario: you and a friend win a trip to visit twelve national parks, accompanied by a park ranger. Before long, wackiness ensues as you encounter roaming bison in Yellowstone, view harbor seals in Olympic National Park, see alligators in the Everglades, and attempt to climb Denali in Alaska. Filled with fun facts, this book will provide you with hours of entertainment as you fill in the blanks to create your own adventure! Join your story with ours as you travel on a hilarious romp through our most popular parks, while also learning important conservation lessons.