"Describes how astronomers have been studying the solar system by using telescopes and through the use of space missions, both unmanned missions and manned missions."
We rely on energy to fuel our activities, but fossil fuels cause pollution. And their supply is running out. What can you do? Alternative energy sources such as water, wind, and sun provide a promisin
Introduces gardening basics, describes what to plant to attract butterflies, and discusses their physical characteristics, behaviors, and eating habits.
A True Book-Physical ScienceWhether you're an aspiring inventor or an everyday science buff, you've probably created your own experiments to uncover the truth about the forces of physical science. Now
Concise, easy-to-read introductions to various topics in U.S. history use primary documents and photography, as well as timelines, maps, and other tools, to teach important facts about our past.
"Describes the stories of some of the suffragists who worked hard to give women the right to vote in the United States including Elizabeth Cady Stanton, Susan B. Anthony, Lucy Stone, Ida B. Wells, Car
