Ciencias

A True Book-Physical Science Whether you're an aspiring inventor or an everyday science buff, you've probably created your own experiments to uncover the truth about the forces of physical science. Now you can delve deeper into the topics of electricity, motion, gravity, and more with these titles that are perfect for the budding scientist in you.

This book describes what gravity is, the history of its study, and its effects.

Why was Galileo put in jail for his writings about gravity?

The Pope was angered by Galileo’s work proving that Earth was not the center of the universe.

inside you’ll find:

* Why gravity keeps us from floating into outer space;

* A timeline, photos - and how gravity works on other planets;

* Surprising TRUE facts that will shock and amaze you!

This book briefly describes the science behind friction, and what its effects are.

Need a good way to introduce physical science topics to your children? This series of books will not only do just that, but also spark some curiosity to further learning. Your children learn about inventions, inventors, and how different forces (like friction or gravity) are used in everyday life. Plenty of fun photographs and facts are packed into these small books.

Bridges are a crucial part of trade and transportation. They allow vehicles and pedestrians alike to cross everything from rushing rivers to rocky ravines. Readers will trace the history of bridges from their invention in ancient times to the construction of today's engineering wonders. They will learn why different bridge shapes are suited to different purposes, how engineers choose which materials to use in bridge construction, and much more.

A True Book: Could Self-Driving cars improve safety on the road? Experts predictions. Timeline, photos, true facts that will shock and amaze you!

What causes a meteor shower? Dive into the many components that make each planet distinctive and exceptional, as well as explore many of the other components that make up Space. Grades 3-5 introduction to curriculum-relevant subjects. Lexile 880, 48 páginas, Tapa Blanda, 1x18x21 cms, J.A. Kelley, 8 a 14 años.

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.

ABOUT THE SERIES:

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.

ABOUT THE SERIES:

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.

ABOUT THE SERIES:

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.

ABOUT THE SERIES:

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.

ABOUT THE SERIES:

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.

ABOUT THE SERIES:

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.

ABOUT THE SERIES:

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.

Upgraded and updated, True Books present information in a thorough yet engaging manner, featuring lively sidebars, a glossary, visual back matter, and an index.

Butterflies begin as eggs. 

Read this book and learn all about butterflies.