En el libro se explica cómo cambian física y químicamente los materiales.
La ciencia nos ayuda a entender el mundo que nos rodea, descubre el mundo natural con el tema de cómo viven y crecen las plantas.
En el libro puedes aprender cómo experimentar con la electricidad.
En el libro se explica qué es el método científico y para qué sirve.
Historia de la NASA, sus antecedentes y distintas etapas que han repercutido en el desarrollo de la ciencia y la tecnología, además de traer influencia positiva para la civilización.
Examples are used to illustrate how many laws began as grass-roots initiatives, and how much a law can change from the time it is first suggested to the time it is approved.
Emphasis is placed on how all levels must work together to succeed and examples are presented demonstrating how all levels of government contribute to the lives of every citizen.
The legislative branch of the United States government represents the people and makes the laws which they live by. This book introduces readers to the House of Representatives and Senate, and the main players in both. Whips, committees, and filibusters are also discussed. A comparison to other legislative bodies in state and local governments, as well as in other countries, is also included.
The judicial branch of government consists of the nations courts. This title explores the role of the United States Supreme Court and its role in interpreting the U.S. Constitution, as well as the role of Federal Courts. Justices and judges, and how they are selected for their jobs is also provided. A comparison to other judicial bodies in state governments, as well as in other countries, is also included.
This entertaining and insightful book will show young readers about the chemical compounds that make up the world around them. Colorful illustrations encourage interest in this vital basic science, giving readers knowledge of the periodic table and the importance of chemical compounds in their lives.
This book provides essential information on all aspects of the election process. How is a government elected? is packed with plenty of full-color images to help deliver a fundamental message: that the right to vote is one of the cornerstones of a free and democratic society.
Almost everything around us is a combination of different things. These are mixtures and solutions. Seawater, for example, is a solution of salt and water. The engaging text and vivid illustrations in this book will help readers understand how mixtures and solutions form, and how they apply to everyday life.
This book gives young readers a better understanding of the different states of matter. Through colorful photographs and lively discussions of familiar materials, readers will be drawn in to learn about matters many forms.
Through exciting, familiar examples and engaging illustrations, readers will discover how chemicals react and change. Topics include how chemicals react with one another, chemical changes such as precipitation and oxidation, how catalysts affect chemical reactions, and what everyday events are actually chemical reactions
Young readers will be amazed to learn about the tiny particles that make up everything in the world around them. Colorful illustrations and fun fact boxes will help readers understand how atoms come together to form molecules, the building blocks of everything in the universe.
Did you know that cola is an acid? And your saliva is a base? Young readers will learn about common acids and bases from lemon juice to ammonia. Through vivid examples and exciting illustrations, this book will eagerly explore these important chemical compounds.
This engaging title explains that electromagnetism is the combined power of electricity and magnetism. Detailed images, clearly written text, and opportunities for hands-on learning combine to teach readers the core concepts of electromagnetism and their many applications in everyday lifefrom watching television to using a computer. Readers will learn how to build an electromagnet and perform tests to understand how to increase its strength.
This comprehensive title introduces readers to current electricity and circuitsthe pathways through which electricity flows. Detailed diagrams and supportive text explain the basic components of an electric circuit and the functions of these parts. Through real-life examples and opportunities for hands-on learning, readers understand and construct simple open, closed, parallel, and series circuits.
This informative title introduces readers to the electrical properties of different materials. Readers will learn that conductors are materials that allow the flow of electricity, while insulators are materials that do not allow the flow of electricity. Clear text and relatable, real-world examples help readers understand the importance of conductors and insulators and how each reacts to electric current. Readers will also learn how to perform simple tests to identify materials that are conductors and insulators.
Children see themselves as part of a non-living world of houses, schools and televisions. This intriguing new book explains what a living thing is so that children can make the connection between themselves and other living things, including plants, animals, and insects.
All types of creatures, including insects, mammals, and fish, are covered in this engaging book on the animal kingdom. Young readers will learn all the basics of kingdoms, orders, classes, and species.
What are Forests? brings to life the wondrously complex and diverse ecosystems found in forests around the world. Intricate relationships and concepts are explained in a simple way with the help of beautiful color photographs. Children will be fascinated by the earth's many types of forests, the elements that make up a forest ecosystem, the wide range of plant and animal species that live in different forests, and the importance of forests to the rest of the Earth.
What makes birds different from other animals? Do all birds fly? How are the bodies of birds different? Where do they live and how do they build their nests? These questions are answered in this fascinating new book on what makes a bird.
