From puddles to lakes, streams to rivers, and bogs to swamps, each body of water contains an amazing treasure chest of life. There is an abundance of plant and animal life hiding in every freshwater habitat. But freshwater habitats are also fragile and... show more
On September 11, 2001, terrorist attacks in New York City, Washington DC, and Pennsylvania changed the global community, pushing terrorism into the spotlight, and triggering a series of world events that included the invasion of Afghanistan and the Ira... show more
Offering a fascinating look into the Age of Exploration, this investigative guide delves into the voyages of real-life adventurers such as de Gama, Columbus, Magellan, Cabot, Cortes, and more. With common household items and minimal supervision, kids c... show more
Over 7 billion people live on the earth, and 84 percent of them describe themselves as being religious. Few topics incite such passion as religion. What does that mean? Why are humans invested in ideas that may never be proved? Why has religion played ... show more
Offering a fascinating look into the life and times of the first United States president, this engrossing exploration chronicles George Washington’s years as a young Virginia gentleman, his military career, and his political contributions to a fledglin... show more
What would your life be like if you were a Jewish person living in Nazi Germany in 1940? You might be forced to leave your home with only what you and your family could carry. You might even be killed by members of the Nazi party.
Have you ever wondered what makes up everything in the world around you? Or what exactly is the difference between solids, liquids, and gases? Have you wanted to know what causes two substances to react or change?
Imagine a world without brand-name products! Before the Industrial Revolution it was not possible to produce enough of the same item to have a brand, but in 100 years the world changed from make-your-own everything to a society of manufactured goods.
Why do children resemble their parents and siblings? Introducing young readers to the fascinating world of genetics, this educational resource presents the main concepts of the science, including what a chromosome does, how DNA is structured, and how g... show more
Why do humans walk on two legs? Why do fish have gills? Life on Earth is incredibly diverse and part of the reason for this is evolution, or the theory that living things change with time. Evolution: How Life Adapts to a Changing Environment explores t... show more