Books with author Gina Hagler

The civilizations of ancient India had their own different governments. In the Indus Valley Civilization, priest kings were at the head of government. The Maurya Empire boasted a stable, centralized government that allowed the flourishing of trade and culture. That government had weakened by the time of the Gupta Empire, opening the gates to foreign invaders and civil wars. This informative volume charts the changes in leadership in ancient India and ends with a comparison to India’s government today. With engaging text, rich and colorful illustrations, and an enhanced e-book option, this title is a valuable resource for student reports.

Dark energy is a mysterious force causing the universe to expand in an accelerating manner. Although Edwin Hubble discovered observational proof of expansion in 1929, the first direct evidence for dark energy came from supernova observations in the late 1990s. Untangling complex physics theories with accessible language, informative sidebars, and captivating imagery, this text explores the development and evaluation of scientific theories behind dark energy. Students will learn about the tools and methods scientists use to unravel dark energy's origins, dynamics, and effects on the universe.

Were smartphones and video games used in the Indus Valley Civilization, the Maurya Empire, and the Gupta Empire? Maybe not, but just because they were ancient peoples does not mean they didn't have sophisticated technology for the time. This volume examines the developments that allowed the progression and improvement of ancient India and connects them to technological innovations throughout the ages and today. Featuring engaging text, rich and colorful illustrations, and an enhanced e-book option, this title is a valuable resource for researching school reports.

Were smartphones and video games used in the Indus Valley Civilization, the Maurya Empire, and the Gupta Empire? Maybe not, but just because they were ancient peoples does not mean they didn't have sophisticated technology for the time. This volume examines the developments that allowed the progression and improvement of ancient India and connects them to technological innovations throughout the ages and today. Featuring engaging text, rich and colorful illustrations, and an enhanced e-book option, this title is a valuable resource for researching school reports.

Among other freedoms, the First Amendment to the Constitution guarantees a free press. This enlightening book examines the origins of freedom of the press in America and traces many of the important court battles that helped define that freedom. Further, the author explores the continuing evolution of the media today, including the ways in which technology may be changing the meaning of a free press. The text supports curricular requirements by looking at press freedom through the lenses of the law, history, and media literacy. Fascinating historical and recent news photographs enhance the narrative.

Wilbur and Orville Wright are best known for their successful flight at Kitty Hawk, North Carolina, in 1903. This heavier-than-air, manned airplane changed the world. Through exciting text, captivating images, and informative sidebars, students will explore how the Wright brothers' use of aeronautical principles, trial and error, testing of components in a wind tunnel, and new approaches to the problems of flight blazed a trail for others to follow. They will discover how the brothers' ability to work together, respect one another's ideas, and support one another during times when nothing seemed to work made it possible for them to create one of the most significant inventions of modern time.

Wilbur and Orville Wright are best known for their successful flight at Kitty Hawk, North Carolina, in 1903. This heavier-than-air, manned airplane changed the world. Through exciting text, captivating images, and informative sidebars, students will explore how the Wright brothers' use of aeronautical principles, trial and error, testing of components in a wind tunnel, and new approaches to the problems of flight blazed a trail for others to follow. They will discover how the brothers' ability to work together, respect one another's ideas, and support one another during times when nothing seemed to work made it possible for them to create one of the most significant inventions of modern time.

How does the temperature of ocean water make a difference in the strength of tropical storms? This question and many others can be answered with the principles of earth science. Supporting the Next Generation Science Standards, this book discusses everyday events to describe earth science principles in action. Each chapter contains a sidebar with information on places such as the Ring of Fire and the role Cepheid variable stars play in calculating the distance of objects in space. Simple experiments provide students an opportunity to see the science firsthand.