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.

Nicol�s Cabral's is one of the most singular voices in Latin American literature, and this book demonstrates his hypnotic and out of the ordinary style. The stories ebb from real to unreal, from earthly to fantastical. In addition, there's something rarely found in most contemporary writers: an aversion to the familiar and disdain for common places. La de Nicol�s Cabral es una de las voces m�s singulares de la nueva narrativa latinoamericana. Como en Cat�logo de formas, su primera novela, he aqu� una prosa construida mediante una inflexible depuraci�n y, al mismo tiempo, plural....

Based on the premise that all young people should learn to make decisions, respect themselves, and resolve challenging problems, this book is a self-help guide for adolescents to develop positive thinking, high self-esteem, and personal power. Exercises guide readers through learning about their own feelings, dreams, and needs while stressing that they are responsible for their own behavior and happiness. Situational anecdotes used to enhance the discussion are age-appropriate and relevant to children. Writing and keeping a journal are encouraged, and group exercises make the book useful in...

Explore the different types of ecosystems and biomes through this captivating Spanish book, featuring vivid images, charts and graphs, and interesting facts! Readers will be excited as they learn about the tundra, grassland, desert, and temperate forests, as well as riparian and pelagic biomes. A glossary, index, and an engaging experiment are included to help children further understand the content.

En esta fantastica seleccion de historias de la Biblia encontrara una lectura para cada dia del ano. Incluye mas de 200 relatos biblicos del Antiguo y el Nuevo Testamento, asi como una seleccion de oraciones tradicionales y originales, adaptadas con un lenguaje sencillo para ninos de todas las edades e ilustradas con dibujos a todo color.