La carta de derechos

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

What do churros, macarons, and strudel have in common? In order to bake them successfully, pastry chefs must use fractions! Students will learn comparing fractions while engaged in reading about delectable desserts from around the world. This Spanish book combines mathematics and literacy skills, and uses practical, real-world examples of problem solving to teach math and language arts content. The glossary, index, and table of contents will further understanding of reading and math concepts, and the full-color images, practice problems, and math graphs and charts make learning math easy,...

The early nineteenth century in the United States was a study of contrasts. On the one hand, the Jazz Age brought cultural liberation, vivacity, and reckless consumption; on the other, the Great Depression brought poverty and desperation to millions. Explore these periods in American history through the eyes of the people who lived them.

Malala Yousafzai is the youngest person ever considered for the Nobel Peace Prize. She stood up to the Taliban and nearly paid with her life. She shares her amazing story in her own words and proves that one person, no matter her age, can change the world.

Introducción de Alberto Cardín. Grabados extraídos de la edición Imprenta del Guardia Nacional, Barcelona 1839. Poco conocidas dentro del conjunto de la obra de Valera, estas cartas forman un conjunto coherente, tanto en lo temporal como en lo espacial, que las convierte en el más interesante epistolario de viaje del siglo XIX español, por encima incluso de las Cartas Finlandesas de Ganivet, mucho menos vivas, personales y penetrantes. Epistolista por necesidad, debido a sus múltiples cargos diplomáticos, pero aficionado también al género epistolar por puro gusto literario, Valera...