La vida de Sacagawea (The Life of Sacagawea)

One of North America's most popular sports, skateboarding combines balance, dexterity, and quick reflexes. Kids will get the lowdown on streetstyle and vertical skating and learn about the board, safety, motion and balance, and how to perform kickturns, spins, rock n' roll, and more.

In 1991, preparation for the construction of a new federal office building led to a startling discovery: a skeleton. Further excavation exposed the bones of 420 men, women, and children. This area of New York had been a burial ground set aside for both free and enslaved Africans during the 1600s and 1700s. It’s thought to be one of the most important archaeological discoveries of the 20th century. This noteworthy book—which includes sidebars, fact boxes, a timeline, and maps—fills in the gaps of history books, exposing much about what life was like in colonial New York for Africans.

Siete Unidades Didácticas: "Bienvenidos al universo Cortázar" (I y II); "El gran teatro de tu mundo"; "El amor en el túnel del tiempo"; "Letra y música"; "Soledad, dolor y denuncia: Poesía española del siglo XX"; "Museo de épocas de la poesía española". Cada unidad pretende la motivación del alumno mediante su relación con el entorno, su actividad, su protagonismo y su interés por la lectura; trabaja la Lengua y Literatura como algo inseparable.

Defines pulleys, explains their functions, and suggests simple experiments to demonstrate how they work.