Las siete cajas

Teach students about the years of change and reform between World War I and World War II. With this Spanish-translated book, readers will learn about events such as the Harlem Renaissance, suffrage, the stock market crash on "Black Tuesday," and the Great Depression. Primary source documents and images, and other engaging features, aid students in understanding the social studies content.

La disputa entre los animales y el hombre es una pequeña obra maestra de la literatura árabe recogida en la Enciclopedia de los Ijwân al-Safâ; («Hermanos de la Pureza», secta filosófica del mundo islámico del siglo X que supo aunar la sabiduría persa y el legado de Grecia con el espíritu religioso del Islam). La disputa es un apólogo de grandes pretensiones en el que se pone en tela de juicio la superioridad del hombre sobre los animales. Con un lenguaje vivo y lleno de colorido muestra las observaciones zoológicas de la época a la vez que critica la sociedad de aquel momento e...

Wind Power: A waving flag, blowing leaves, a kite soaring through the skyall are moved by wind power. Wind is also our fast-growing source of energy. Find out how wind forms and the different ways we may use it in the future.

A 2014 survey by the Substance Abuse and Mental Health Services Administration showed that 8.7 million youths ages twelve to twenty reported drinking alcohol beyond “just a few sips” in the previous month. Those who start drinking before age fifteen are five times more likely to become dependent on alcohol than those who begin at twenty-one. This resource shows young people how to help a friend who is abusing alcohol. It arms them with facts about alcohol, how it affects the teen mind and body, how to look for signs of a problem, and how to bring others on board to help.