Are there white holes in space? Who said space and time are the same? Why do wormholes exist? How fast does light travel? What if you could time travel?
Growing up in the animal kingdom isn't easy, but it is adorable. Through colorful photography, growth charts and other infographics, and engaging text, this series takes readers on an adventure through the firsts of some of the world's most adorable animals.
Growing up in the animal kingdom isn't easy, but it is adorable. Through colorful photography, growth charts and other infographics, and engaging text, this series takes readers on an adventure through the firsts of some of the world's most adorable animals.
Growing up in the animal kingdom isn't easy, but it is adorable. Through colorful photography, growth charts and other infographics, and engaging text, this series takes readers on an adventure through the firsts of some of the world's most adorable animals.
Growing up in the animal kingdom isn't easy, but it is adorable. Through colorful photography, growth charts and other infographics, and engaging text, this series takes readers on an adventure through the firsts of some of the world's most adorable animals.
Militaries around the world use aircraft to defend and attack. Huge bombers take out the enemy. Fighter jets hide from radar. With hi/lo text and powerful infographics, readers will soar along with the fastest and most powerful military aircraft in the air today.
Militaries around the world use aircraft to defend and attack. Huge bombers take out the enemy. Fighter jets hide from radar. With hi/lo text and powerful infographics, readers will soar along with the fastest and most powerful military aircraft in the air today.
Militaries around the world use aircraft to defend and attack. Huge bombers take out the enemy. Fighter jets hide from radar. With hi/lo text and powerful infographics, readers will soar along with the fastest and most powerful military aircraft in the air today.
Growing up in the animal kingdom isn't easy, but it is adorable. Through colorful photography, growth charts and other infographics, and engaging text, this series takes readers on an adventure through the firsts of some of the world's most adorable animals.
Growing up in the animal kingdom isn't easy, but it is adorable. Through colorful photography, growth charts and other infographics, and engaging text, this series takes readers on an adventure through the firsts of some of the world's most adorable animals.
Growing up in the animal kingdom isn't easy, but it is adorable. Through colorful photography, growth charts and other infographics, and engaging text, this series takes readers on an adventure through the firsts of some of the world's most adorable animals.
Militaries around the world use aircraft to defend and attack. Huge bombers take out the enemy. Fighter jets hide from radar. With hi/lo text and powerful infographics, readers will soar along with the fastest and most powerful military aircraft in the air today.
Militaries around the world use aircraft to defend and attack. Huge bombers take out the enemy. Fighter jets hide from radar. With hi/lo text and powerful infographics, readers will soar along with the fastest and most powerful military aircraft in the air today.
Militaries around the world use aircraft to defend and attack. Huge bombers take out the enemy. Fighter jets hide from radar. With hi/lo text and powerful infographics, readers will soar along with the fastest and most powerful military aircraft in the air today.
Growing up in the animal kingdom isn't easy, but it is adorable. Through colorful photography, growth charts and other infographics, and engaging text, this series takes readers on an adventure through the firsts of some of the world's most adorable animals.
Introduces the plant life cycle. Readers will gain insight into the journey from seed to plant, why plants are important to living things, and how pollution can damage plants. Additional features include a diagram of the cycle, table of contents, a phonetic glossary, an index, an introduction to the author, and sources for further research.
Provides brief information on how the coronavirus that causes COVID-19 spreads, as well as offers prevention guidelines for ways children can do their part to slow the spread. Additional features include informative captions, interesting factual sidebars, suggested activities, a phonetic glossary, resources for further research, information about the author, and an index.
A brief biography of the wife of the reverend Martin Luther King Jr. who shared his dedication to working peaceably to achieve equality. Additional features to aid comprehension include a table of contents, informative captions and sidebars, a phonetic glossary,a time line, a Think-About-It section, and an index.
¿Perros detectives? Gracias a sus extraordinarias habilidades para olfatear, algunos cachorros aprenden a ayudar a los científicos a investigar y rastrear a animales en peligro de extinción. ¿Tras qué pista van? La caca. Los perros que son parte de los equipos de detectives de la vida salvaje están entrenados para captar el olor de la caca (excrementos) de los animales salvajes para que los científicos puedan aprender de ellos sin tener que atraerlos o atraparlos. Al igual que muchos cazadores de caca, Sampson, el perro en este libro, solía vivir en un refugio, era demasiado activo y alocado para las familias. Esa energía e impulso es lo que lo hace tan buen detective. Está entrenado para seguir a muchas especies, desde salamandras hasta osos, pero su meta siempre es la misma. ¡Encontrar la caca y capturar la pelota!
Todo lo que nos rodea está hecho con recursos naturales. Algunas cosas son fáciles de reemplazar, mientras que otras no. Piensa en los alimentos que has comido o la energía requerida para acercar al autobús a la escuela. ¿Qué recursos naturales has usado hoy, y estos son fáciles de reemplazar? Adéntrate en la nueva entrega de la serie de libros de comparaciones y contrastes para aprender sobre los recursos del mundo, cuánto tiempo les toma reproducirse y cómo la tecnología y el ingenio están ayudando a calmar la tensión de nuestras reservas más preciadas.
Dog detectives? Thanks to superior sniffers, some pups learn to help scientists investigate and track endangered animals. The snoopers’ clue? Poop. Dogs that are part of wildlife detective teams are trained to catch the scent of wild animal poop (scat) so that scientists can learn about these animals without luring or trapping them. Like many pooper snoopers, Sampson, the dog in this book, was once a shelter dog, too hyper and ball crazy for families. That energy and ball drive is what makes him such a good dog detective. He is trained on many species, from salamanders to bears, but his goal is always the same. Find the scat and get the ball!
Everything around us is made from the Earth. Some things are easily replaced, while others are not. Think about the food you have eaten or the energy it took to zoom to school on the bus. What natural resources have you used today, and are they easy to replace? Step through the latest book in the Compare and Contrast series to learn about the world’s resources, how long they take to reproduce, and how technology and ingenuity are helping to relieve the strain on some of our most precious reserves.
Learn all about graphing in this informative Spanish-translated nonfiction e-book! This digital book helps readers understand how to graph a clear visual representation of data, encouraging mathematical and STEM skills. See strong examples of bar graphs, circle graphs, and line graphs, learning the best way to present data using these tools.
Young investigators will discover what happened to their favorite playground equipment in the text, El caso del parque infantil (The Jungle Park Case). By analyzing footprints, fingerprints, and tire tracks, students will understand how useful gathering information and analyzing data are to solving problems. With a glossary, an index, dynamic images, age-appropriate content, and easy-to-read text, students will build their math and reading skills while they are engaged in reading high-interest topics.
Learn how important data analysis is to crime scene investigations in this Spanish-translated nonfiction e-book! Investigators examine data from fingerprints, blood samples, DNA samples, and lie detector tests to analyze and interpret crime scenes. This exciting Spanish-translated digital book provides readers with engaging examples of data analysis and probability. Through eye-catching images, easy-to-read informational text, clear mathematical charts and diagrams, and text features including a glossary and index, this e-book will leave Spanish readers more confident in their data analysis and STEM skills, all while showing them how the things they learn are used outside of the classroom in very important ways!
