This incredible book provides a snapshot of the often surprising technologies developed by various ancient civilizations. Engaging illustrations, detailed timelines, and fascinating information bring back to life the ancient civilizations of Greece, Rome, Mesopotamia, Africa, China, and more. Read about iron smelting by the Celts, the construction of the Great Wall in China, how mummies were made and buried in Egypt, and sword making in Japan.
Accessible text and vibrant design combine to provide readers with a solid introduction to this form of matter. Readers will learn the unique properties of solids and the conditions under which they change state.
This colorful book describes the geological makeup and history of the Kalahari Desert in Africa. Covering most of Botswana, as well as portions of Namibia and South Africa, the Kalahari is not a true desert because it receives more than ten inches (250 mm) of rain each year. But the rain drains and evaporates quickly leaving no water on the surface of the red sand. Readers will learn about the variety of habitats in this vast desert system that support many different kinds of plants and animals such as springboks, giraffes, elephants, and zebras. Special sections also describe the Kalahari's natural resources, indigenous people, and the unique problems facing this region.
This intriguing book describes the geological makeup and history of the Gobi Desert in Mongolia and China. Temperatures can get very cold and frost and snow are not unusual. Readers will learn about the variety of habitats in this vast desert system that support many different kinds of plants and animals such as camels, snow leopards, and bears. The Gobi Desert is also where the first dinosaur egg fossils were found. Special sections describe the desert's natural resources, such as copper and gold, and the unique problems facing this region such as the desert's alarming rate of desertification.
Carefully constructed text and detailed photographs help readers identify the properties of gases. Readers will discover different kinds of gases and their practical, everyday uses.
This innovative title supports both math and science standards. Readers learn to identify different tools used to measure matter, such as balances, rulers, and thermometers. Easy to follow text helps readers gain hands-on experience measuring, collecting and recording data, and graphing their results.
Inspire readers to get wired for knowledge! This informative new title introduces the scientific principles of electricity. Full-color photographs, accessible text, and relatable, real-life examples explain how electricity is created, stored, and moved. Readers learn that electricity can occur naturally or can be produced by batteries or machines. Hands-on activities encourage readers to experience science in a meaningful way.
This intriguing book shows how this group's unusal members are generally classified according to an absence of a feature, such as the lack of complicated cell structure. Learn about such exotic organisms as algae, amoebae, and slime moldsall of them protists. Case histories examine the importance of plankton to the marine food chains and the role of protists in various diseases.
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.
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.
Why can we see through some materials and not others? This informative title helps young readers discover the answer to this question and more. Readers explore the differences between transparent and opaque materials, including examples of their uses in everyday life.
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.
Why is your desk smooth? Why is sandpaper rough? What is friction? This engaging title invites curious readers to discover the answers to these questions. Vibrant photographs and accessible text encourage readers to investigate how smooth and rough materials are used in everyday life.
This engaging title introduces readers to materials that are either hot or cold. Accessible text and close picture support invite readers to identify hot and cold things around them and understand why things melt and freeze. Readers will also learn how people measure temperature.
This colorful and engaging title is sure to attract curious readers! Using familiar examples, readers will discover the difference between magnetic and nonmagnetic materials. Accessible text and supportive images encourage readers to identify and classify materials based on magnetic attraction.
This title has mass appeal! Colorful images and clear and concise text invite readers to look at the property of weight. Using familiar examples, readers learn how to tell the difference between heavy and light objects and learn how people weigh objects. Readers then identify, describe, and compare materials based on weight.
This book looks at the difference between flexible and rigid objects. Using familiar objects, readers discover how flexible and rigid objects are used in everyday life. Readers are encouraged to identify and classify materials based on these physical properties.
This new book will blow readers away! Accessible text, interesting facts, and bright, colorful design create an engaging combination for young readers. Readers will discover how wind forms, its affect on people, plants, and animals, and the tools scientists use to measure wind direction and speed. A hands-on experiment teaches readers how to make a wind vane and use it to find the winds direction.
Weather changes from day to day and season to season. But what exactly is weather and how is it created? Readers will discover the answers to these questions and many other weather wonders. Bright, full-color photographs, inviting text, and engaging questions introduce readers to the different types of weather in our world and how it affects our lives.
From gentle showers to heavy downpours and slow flurries to hail, this appealing title will be a hit with readers rain or shine! Readers will learn the basic concepts of the water cycle, the features of different kinds of precipitation, and the role temperature has in determining what falls from our clouds.
Temperature is a measure of how hot or cold something is. Temperature affects our lives from the clothes we wear to the activities we do. This engaging and entertaining title inspires a solid understanding of this essential concept. Readers also discover how a thermometer is used to measure temperature using units called degrees.
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.
