Desafíos matemáticos

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.

Why did the Civil War begin? Which states were part of the Union and which were part of the Confederacy? Readers will learn the answers to these questions and more as they move through this fascinating nonfiction Spanish-translated title. The easy-to-read informational text, engaging facts, and vivid images and illustrations help highlight some of the aspects that led up to the Civil War, including slavery, the Underground Railroad, abolitionists, the Fugitive Slave Act, the Dred Scott Decision, and the Lincoln-Douglas debates. The accessible table of contents works in conjunction with the...

Learn all about planet Earth in this engaging, colorful title! Earth is our home. It is a big, beautiful place that orbits the sun. What else is there to know about Earth? Read this Spanish-translated book to find out! This 6-Pack includes six copies of this title and a lesson plan.

El siglo XXI demanda nuevas habilidades, la tecnología exige progreso constante y el alto nivel competitivo en el mundo de lo negocios requiere que cada emprendedor y empresario tenga consigo un ejemplar de Trilogía de los Negocios. La Doctora Abigail le revela en este libro los principios de cada hombre y mujer exitosos han utilizado para lograr lo que hasta ahora tienen. Parece pretencioso el comentario, pero después de leer el primer capítulo usted estará de acuerdo conmigo que este comentario se queda corto. Al terminar de leer este tomo usted habrá adquirido conocimiento,...

Knowing how to listen is essential to learning, growing, and getting along with others. This gentle, encouraging book introduces and explains what listening means, why it’s important, and how to listen well. Realistic examples and inviting full-color illustrations bring the concepts to life. The focus throughout is on the positive results of being a good listener. Made to be read aloud, this book also includes a special section for adults, with ways to reinforce the skills being taught, questions to invite lively discussion, and listening games to play. Now children and adults can enjoy our ...