Böcker av Sarah Albee

"The history of the number zero is long, complicated, and interesting"--

Ever wondered what makes rubber bounce? Or why it's stretchy? And WHY is rubber so . . . rubbery?! Learn the facinating science and history behind this ubiquitous material!With sidebars, graphics, fun facts, and more, the history of rubber reveals plenty of fascinating secrets and surprises. Elementary school readers will discover that early balls didn't bounce; that people in the rainforest made waterproof gear from rubber thousands of years before Europeans got into the act; and that sneakers, bicycles, and cars created demand for more and more rubber!Back matter includes a time line and a bit about the complicated implications of harvesting rubber.

Meet twenty-one women throughout history who broke fashion and norms to do something groundbreaking in this unique middle-grade collection that celebrates trailblazers and troublemakers.Girls and women have historically been denied access to work, been blocked from the arts, refused the opportunity to lead and fight, and much more, simply because of their gender. From Hatshepsut to Joan of Arc to Frida Kahlo, Troublemakers in Trousers highlights twenty-one women who, for different reasons, wore men’s clothing, pretended to be men, and broke the rules in order to do something they wanted—or needed—to do. The perfect modern-day introduction to women throughout history who broke boundaries and pushed the limits set by society.

Buzz and his band of bullies invade the playground where Trevor and his pals hang out--but not for long. Find out what happens when Trevor challenges Buzz to a contest--where the winner takes all. Full-color illustrations.

A richly illustrated, foldout graphic history of the United States, Mexico, and the islands of the Caribbean