Keppeler, Jill

The name black widow strikes fear into hearts of those living where these spiders reside. These fearsome arachnids have venom about 15 times more powerful than that of a rattlesnake! With their distinctive black bodies and red mark on their abdomens, black widows terrorize those afraid of spiders and their poisonous bites. This book explores how these creatures live, where to find them, and what they use all that venom for. It also gives readers a look at why these spiders are so feared, and what to do if they bite humans.

Readers will learn about the game's creator, programmer Markus ""Notch ""Persson; Mojang, the company he founded to help make it a reality; and the team of people who've helped it reach its current popularity.

Describes the women's suffrage movement in the United States, the women who played key roles, and the movement's impact on American society.

"Off the southern and western coasts of Australia lives a fish with transparent fins shaped like seaweed, undulating slowly in the water, mimicking its plant surroundings to survive. This incredible example of evolution is an endangered species, a sad reality but a great opportunity to teach. This book highlights the incredible physical attributes of the leafy sea dragon through astonishing full-color photographs, and includes wacky tidbits on every page to entice readers of all ages into learning about biology, ecosystems, and more.".

A biography filled with facts about Thomas Jefferson.

Presents the biography of Markus "Notch" Persson, a computer programmer from Sweden, who invented the Minecraft video game. Also includes information on the game development company Mogjang AB and other programmers who were involved in the creation of Minecraft.

They re sparkly with varied hues. You might see them in a beautiful necklace, a breathtaking ring, or even in a computer. They re gems. Gems are some of Earth s most precious resources, and some of them are millions, or even billions, of years in the making. This detailed text, accompanied by colorful photographs, informs readers about the remarkable processes that take place under the surface of Earth to form different kinds of gems. They ll also learn how some gems are mined, while others are replicated in laboratories. Future lapidaries will also find out how they might find and polish gems for themselves. Full-Color Photographs, For Further Information Section, Glossary, Graphic Organizers, Index, Sidebars, Web Sites.

Who were the leaders of the ancient Maya? How did their political system work? Readers will learn the answers to these questions and more as they explore the evidence left behind by the ancient Maya. Primary sources, such as artifacts, ruins, and ancient artwork, will give readers a strong grasp on the political system that governed the ancient Maya.

Describes the women's suffrage movement in the United States, the women who played key roles, and the movement's impact on American society.