Los zorros

Sesenta autores, desde catedráticos de universidad hasta estudiantes de Secundaria y Bachillerato, nos presentan los cuarenta desafíos que la Real Sociedad Matemática Española propuso con motivo de su centenario.Son cuarenta estimulantes retos que avivan el ingenio. Enfrentándose a ellos, el lector se sentirá un auténtico investigador matemático.Pero no hay que asustarse. No es necesario saber muchas matemáticas. La herramienta esencial para resolver los desafíos es pensar ordenadamente.

The American Revolution was one piece of a global struggle for power. Great Britain, France, Spain, and the colonists under each empire's rule fought for control of the world's vast lands and resources. On the American battlefront, Bernardo de Galvez, a Spanish general, would survive battle wounds and hurricanes to lead a diverse force to victory. His leadership changed the course of history, and contributed to the American patriot's success. In this enlightening and engrossing book, students will think critically about the global nature of the era as they study a new perspective and powerful ...

Qué diversión tiene mamá con su pequeño. Los ejemplos sencillos de la vinculación de las madres con sus hijos ayudan a desarrollar habilidades positivas de crianza y a desarrollar familias fuertes.

Life Long Ago brings ancient civilizations to life and reinforces important early elementary social studies standards such as time, continuity, and change. Students will learn what daily life was like, how ancient peoples governed themselves, how they communicated, and how the influences of ancient cultures are still felt today.