This fascinating book explains how the shape of Earth is changed by weathering and erosion - the breaking down of rocks and minerals which are then carried from one place to another by water, ice, wind, and gravity. It is this movement that carves out valleys, causes trees to topple over, and creates or destroys good farmland. Examples of changes to landforms help show young readers the effects of weathering and erosion, which can happen quickly or sometimes take centuries!
Earth's surface is constantly being changed by heat, water, ice, salt, plants, and animals. Sometimes the changes are destructive to human activities such as farming and the building of structures. This interesting title shows the different ways people try to stop or reduce this change in the land. Examples feature such structures as dikes to hold back water and windbreaks, and adding shrubs, grass, and trees to an area of land to prevent erosion. Teacher’s guide available.
This informative book explains how Earth is covered by landforms and bodies of water, all of which change shape over time. Interesting images feature landforms such as mountains, valleys, and sand dunes, as well as waterways such as oceans, rivers, and ponds. Children will learn how they develop and why they change.
This engaging and accessible book explains how scientists use models to help them understand systems in the natural world. Readers learn about different kinds of models and discover the similarities and differences between models and the real objects and processes they represent. Readers are given several opportunities to create their own models.
Science uses evidence in explaining the natural world. Using relatable, real-world examples, this informative book shows readers how to construct an argument with evidence to support a claim. Readers will act and think like scientists as they learn how to distinguish between fact and opinion, and use evidence and reasoning to evaluate the claims of others.
Scientists use different kinds of investigations depending on the questions they are trying to answer. Accessible text and child-centered examples guide readers as they learn to plan simple investigations based on fair tests to answer their own science questions.
This informative book goes to great lengths to explain how scientists around the world use the metric system and related tools to help them compare, contrast, and analyze the measurement data they collect. Opportunities for hands-on learning make the content meaningful to readers as they refine their measuring skills.
Amazing Applications and Perfect Programs helps explain operating systems, computer programs, sorting and storing files, databases, and the programs that allow users to have fun with words, pictures, and sounds. The computers that are used in schools, homes, and businesses around the world rely on programs. Learn about the amazing variety of programs available today and how they can be used for the most complicated finances or for simple word processing. Exercises teach key skills such as word processing, creating documents, and using databases. "Stretch Yourself" task boxes give practical activities for readers to try to help reinforce learning and are not linked to specific software or operating systems. "True Story" features give real-world anecdotes from the world of information technology. "Computer Hero" features look at the groundbreaking scientists that paved the way for digital technology today.
The Science of Computers takes an overall look at information technology, exploring how computers operate and the amazing devices that are used in homes, schools, and businesses today. Students will be fascinated by the history of the development of information technology and digital devices from the early computers that filled entire buildings to the tiny silicon chips being produced today. This practical learning guide lays the groundwork for further exploration of computational thinking. "Stretch Yourself" features give practical activities to help readers explore and test key principles to help reinforce learning and are not linked to specific software or operating systems. "True Story" features give real-world anecdotes from the world of information technology. "Computer Hero" features look at the groundbreaking scientists that paved the way for digital technology today.
Computer Networks looks at how computer technology has changed the way we work, communicate, learn, and have fun. The World Wide Web, search engines, email, and social media have all become part of our everyday lives. The bright and engaging design helps guide readers along, and easy-to-understand text explains websites and webpages, search engines, and email systems. Online security is a key area of focus, and advice is included on staying safe online. "Stretch Yourself" features give practical activities for readers to try to help reinforce learning and are not linked to specific software or operating systems. "True Story" features give real-world anecdotes from the world of information technology. "Computer Hero" features look at the groundbreaking scientists that paved the way for digital technology today.
Awesome Algorithms and Creative Coding explores how computers work and explains how to think in a logical way. The bright and engaging design guides readers through clear explanations of binary code, simple algorithms, and computer language. With real-life examples, students learn about the development of coding using simple decision-making processes. Programming languages that readers can use themselves, including Scratch and LOGO, are reviewed. "Stretch Yourself" features give practical activities to help readers explore and test key principles to help reinforce learning and are not linked to specific software or operating systems. "True Story" features give real-world anecdotes from the world of information technology. "Computer Hero" features look at the groundbreaking scientists that paved the way for digital technology today.
This fascinating book explains that some animals must learn the basics of staying alive from their mothers, while others know how to survive without being taught. Students will discover how some bird and mammal mothers teach their babies how to find food and keep safe from predators. Readers will also learn about other animal skills such as finding their way over great distances. People need help from navigation instruments, radar, or maps. Animals use cues such as the sun, stars, or Earth’s magnetic field when they are swimming or flying. This book asks students to look at the skills of animals and compare them to their knowledge and ways of learning.
Did you know that a problem can have many different solutions? Read about how an engineer finds the best solution to solve a problem or meet a need.
Engineers build models to help them test how well their solutions will work. Read about how testing small-sized models helps them spot mistakes, make improvements, and create the best solution possible!
Computer scientists know how to follow steps, spot patterns, and fix problems to reach a goal. Read about how anyone can learn to think like a computer scientist!
Robots are machines that can do work on their own. Read about all of the different and exciting jobs robots do in our communities.
Did you know that an object can only move if a force is placed on it? Read about pushing and pulling—the forces that make objects move—and what happens when you change the strength or direction of a force.
Some objects must be made of certain kinds of materials to make them work the way they should. Read about how the properties of different materials, such as their hardness or weight, help make an object fit the job it is made for.
How does a frog grow? Follow the journey through a frog's life cycle, from the time the egg is laid, through it stage as a tadpole to becoming a fully grown frog.
How does a chicken grow? Follow the journey through a chicken's life cycle, from the time the egg is laid, through hatching as a chick to becoming a fully grown hen.
How does a butterfly grow? Follow the journey through a butterfly's life cycle, from the time the egg is laid, through hatching as a caterpillar, to forming a cocoon and emerging as a fully grown butterfly.
How does an oak tree grow? Follow the journey through an oak tre's life cycle, from an acorn to becoming a fully grown tree.
After receiving an electric shock, the Code Academy kids’ robot classmate, Ro-Bud, has forgotten all of her programming. Professor Chip and the class must learn how programming and operating systems work in order to get their trusty friend back in working order. With easy-to-understand examples and simple terms, readers will learn how computers operate as well as how they use hardware and software to do work.
The kids at Code Academy are memorizing their lines for a school play with the help of Ro-bud, their computer classmate. But when Ro-bud can't remember her lines, everyone panics! Professor Chip believes it's a memory storage problem. By relating human memory to machine memory, readers are introduced to the concepts of computer memory and storage systems in an easy-to-understand way.
The Code Academy class puts their robot classmate, Ro-Bud, to work tidying up the classroom. But their instructions to Ro-Bud don't get the job done. They must figure out the problem by making flow diagrams that use logic to help Ro-bud make decisions about what to do. A simple activity helps readers see how their own daily routines involve making decisions using logic.