Primeros Ejercicios de Calculo

"La fábula de la Montaña Mágica" nos hace creer de nuevo en los misterios del bosque, de los árboles, las plantas y los animales. Enanos, ninfas del aire y seres de la oscuridad, rescatados de los cuentos de hadas, nos acercan a su propio universo en el que todo puede ocurrir y en el que a cada vuelta del camino encontramos una aventura aún más fantástica. Un mundo mágico se esconde en el interior de una montaña muy especial, donde la más increíble de las historias nos espera para poder salvar no sólo la Montaña Mágica, sino también todo el planeta. ¿Podrán los protagonistas...

Discusses the things money can buy, what forms money can come in, including cash, check, and credit, and what a budget is.

Introduce students to Martin Luther King, Jr. with this Spanish-translated biography featuring dynamic primary source documents. Readers will learn about Civil Rights Movement leader and his inspirational life as he fought for equality and desegregation for African Americans through nonviolence. Students will also discover topics such as discrimination, sit-ins, the Nobel Peace Prize, and the March on Washington. Informational text features help students navigate the text.

The Industrial Revolution was one of the most dramatic eras of all time, filled with fascinating people, strange events, and incredible stories. This period of great change comes into sharp focus through each spread with detailed, accessible language. Each fact is complemented with vivid, carefully-chosen historical images and illustrations, and a caption that adds just a touch more history. Readers are drawn deep into the facts not covered in history textbooks, like working conditions, inventions, failures, and characters, to make this important history lesson fun and engaging.