De Medeiros, James

Descubra c?mo esta sencilla m?quina facilita la elevaci?n y la bajada de objetos. Aprenden sobre poleas fijas y m?viles y cu?ndo es mejor usar cada una.

Dolphins live in groups called pods. A pod is made up of two or more dolphins. Find out more in Dolphins, one of the titles in the Creatures of the Sea series.

"Kayaking can be dangerous because it is hard to predict what might happen in rapids . . . This title covers the basics of the sport, going over how and where to go kayaking, recommended gear, safety measures, and related activities. It also includes interesting facts about kayaking, as well as healthy eating and exercise tips to help readers improve their fitness"--Provided by publisher.

Discusses the migration of African Americans from the southern states to the northern states from 1916 to 1970, covering key events, and influential people and groups. Includes audio, videos, activities, weblinks, slideshows, transparencies, maps, quizzes, and supplementary resources.

Explores the history of slavery in North America. Includes audio, videos, activities, weblinks, slideshows, transparencies, maps, quizzes, and supplementary resources.

Explores the history of slavery in North America.

Discusses the migration of African Americans from the southern states to the northern states from 1916 to 1970, covering key events, and influential people and groups.

Black-and-white photographs and text discuss the social history between slavery and the civil rights movement, and cover legal discrimination, the Ku Klux Klan, Booker T. Washington, the NAACP, race riots, Harlem, military service during the World Wars, and more.

Full-color photographs, maps, timeline, and sidebars describe the Parthenon of Greece, built under the leadership of Pericles between 447 and 432 B.C.

Photographs and text offer a tour of the Parthenon in Athens, Greece, and information about its history and design.