El cero y el infinito

Kids use pencils everyday. Read to find out how a pencil is made. Paired to the fiction title Where is My Eraser?.

People today refer to the Midwestern and prairie states as flyover country. During the Civil War, crossing those areas was the biggest obstacle in uniting the East and West Coasts of our divided nation. An act of Congress in 1862 authorized the Central Pacific and the Union Pacific railroad companies to build a railroad that would link the coasts. Seven years later, on May 10, 1869, an overwhelmingly immigrant labor force completed the task when a rail line was join in Promontory, Utah. The states had become united at last.

In Earning Money, early readers learn about the concept of earning money and ways to do it. Vibrant, full-color photos and carefully leveled text will engage early readers as they discover basic economic principles.

En los primeros siete números de la colección te hemos enseñado a diseñar personajes, a escribir historias y desarrollarlas... Ahora es el momento de crearles un mundo y un ambiente real donde ambientarlas.