Describes the history of the Hoover Dam, why and how it was built, and how it works. Additional features include a table of contents, sidebars, infographics, Fast Facts, critical thinking questions, a phonetic glossary, an index, information about the author, and sources for further research.
Find out why leaves turn orange, yellow, red, and purple in the autumn before falling to the ground. Additional features to aid comprehension include colorful images, informational diagrams, hands-on activities, detailed captions and callouts, a table of contents, a phonetic glossary, sources for further research, and an introduction to the author.
Find out what causes spring, summer, fall, and winter and how different parts of Earth experience the seasons. Additional features to aid comprehension include colorful images, informational diagrams, hands-on activities, detailed captions and callouts, a table of contents, a phonetic glossary, sources for further research, and an introduction to the author.
Find out how the atmosphere makes the sky look blue during the day and orange and red at sunrise and sunset. Additional features to aid comprehension include colorful images, informational diagrams, hands-on activities, detailed captions and callouts, a table of contents, a phonetic glossary, sources for further research, and an introduction to the author.
Find out how clouds and fog are formed and how they are alike and different. Additional features to aid comprehension include colorful images, informational diagrams, hands-on activities, detailed captions and callouts, a table of contents, a phonetic glossary, sources for further research, and an introduction to the author.
Find out how the water cycle causes rain, snow, sleet, and other types of precipitation. Additional features to aid comprehension include colorful images, informational diagrams, hands-on activities, detailed captions and callouts, a table of contents, a phonetic glossary, sources for further research, and an introduction to the author.
Find out how the movement of Earth causes the first day of summer and the first day of winter. Additional features to aid comprehension include colorful images, informational diagrams, hands-on activities, detailed captions and callouts, a table of contents, a phonetic glossary, sources for further research, and an introduction to the author.
Find out how raindrops in the air bend sunlight to turn it into a colorful rainbow. Additional features to aid comprehension include colorful images, informational diagrams, hands-on activities, detailed captions and callouts, a table of contents, a phonetic glossary, sources for further research, and an introduction to the author.
Provides information about the causes of hurricanes, where they occur, their characteristics, and the effects they produce.
Discusses what floods are, how they occur, and how to protect oneself when they happen.
Examines earthquakes, what they are, what causes them, and better means of monitoring them.
Provides information about the causes of droughts, where they occur, their characteristics, and the effects they produce.
Discusses what avalanches are, how they occur, and how to protect oneself from avalanches.
Introduces readers to map symbols and scales and their many uses, especially in daily life. Features labeled infographics that highlight special features on the map to enhance reader understanding. Additional features include colorful photos, captions, a table of contents, a phonetic glossary, sources for further research, and an index.
Introduces readers to wetlands and important animals and plants that live there. Learn how wetlands benefit the rest of the world and the threats they face. Additional features include a STEM activity or craft, an infographic, Did You Know boxes, a phonetic glossary, an index, an introduction to the author, and sources for further research.
Introduces readers to the tundra and important animals and plants that live there. Learn how the tundra benefits the rest of the world and the threats it faces. Additional features include a STEM activity or craft, an infographic, Did You Know boxes, a phonetic glossary, an index, an introduction to the author, and sources for further research.
Introduces readers to rain forests and important animals that live there. Learn how rain forests benefit the rest of the world and the threats they face. Additional features include a STEM activity or craft, an infographic, Did You Know boxes, a phonetic glossary, an index, an introduction to the author, and sources for further research.
Introduces readers to seashores and important animals and plants that live there. Learn how seashores benefit the rest of the world and the threats they face. Additional features include a STEM activity or craft, an infographic, Did You Know boxes, a phonetic glossary, an index, an introduction to the author, and sources for further research.
Introduces readers to mountains and important animals and plants that live there. Learn how mountains benefit the rest of the world and the threats they face. Additional features include a STEM activity or craft, an infographic, Did You Know boxes, a phonetic glossary, an index, an introduction to the author, and sources for further research.
Introduces readers to oceans and important animals that live there. Learn how oceans benefit the rest of the world and the threats they face. Additional features include a STEM activity or craft, an infographic, Did You Know boxes, a phonetic glossary, an index, an introduction to the author, and sources for further research.
Introduces readers to ponds and important animals and plants that live there. Learn how ponds benefit the rest of the world and the threats they face. Additional features include a STEM activity or craft, an infographic, Did You Know boxes, a phonetic glossary, an index, an introduction to the author, and sources for further research.
Introduces readers to forests and important animals and plants that live there. Learn how forests benefit the rest of the world and the threats they face. Additional features include a STEM activity or craft, an infographic, Did You Know boxes, a phonetic glossary, an index, an introduction to the author, and sources for further research.
Introduces readers to freshwater lakes and important animals and plants that live there. Learn how lakes benefit the rest of the world and the threats they face. Additional features include a STEM activity or craft, an infographic, Did You Know boxes, a phonetic glossary, an index, an introduction to the author, and sources for further research.
Introduces readers to grasslands and important animals that live there. Learn how grasslands benefit the rest of the world and the threats they face. Additional features include a STEM activity or craft, an infographic, Did You Know boxes, a phonetic glossary, an index, an introduction to the author, and sources for further research.
Introduces readers to coral reefs and important animals and plants that live there. Learn how coral reefs benefit the rest of the world and the threats they face. Additional features include a STEM activity or craft, an infographic, Did You Know boxes, a phonetic glossary, an index, an introduction to the author, and sources for further research.