Agujeros negros (Black Holes)

It was September 14, 1814, and America and Great Britain were at war. Frances Scott Key watched from the deck of a British ship, where he was being held captive, as cannons exploded around them. After 25 hours, the fighting ceased and Key peered through the clearing smoke, looking for some sign as to the outcome of the battle. Was the American flag still flying? His wartime experience inspired Key to write a poem, which was later set to music and became America’s national anthem. This book tells the story of the inspiration behind our national anthem, which helped transform the flag into a...

Teach students about trading and buying goods and services. In this Spanish-translated book, readers will learn about supply and demand, and learn the difference between wants and needs. Featuring images that support the informational text, students will build social studies content-area literacy and reading skills.

Chelsea Clinton, la hija de Hillary y Bill Clinton, recoge en este libro los problemas más urgentes del mundo actual para hacérselos llegar a las nuevas generaciones e impulsarles a actuar. INFÓRMATE ¿Cuáles son los problemas de nuestro mundo? ¿Qué consecuencias acarrea el cambio climático? ¿Cómo se puede acabar con la pobreza? ¿Cómo luchar contra la desigualdad entre hombres y mujeres? Con la ayuda de anécdotas, fotografías y gráficos, Chelsea Clinton te explica los mayores retos del mundo moderno y te da soluciones para que veas que tú también puedes ayudar a cambiar las...