Una Perfecta Equivocación / The Perfect Mistake

People have been sending mail for a long time. But how they do it has changed a lot! Read about the history of mail as you learn to collect data. This Spanish math book combines math and reading skills and uses real-life examples of problem solving to teach subject-area content. The dynamic images, detailed sidebars, practice problems, and math diagrams make learning data measurement easy and fun. Text features include a table of contents, a glossary, an index, and captions to build vocabulary and increase understanding of math and reading concepts. An in-depth problem-solving section...

Esta colección de relatos es fruto de una meditación sobre el pensamiento y la vida del pueblo coreano. Entre sus personajes hay cantores que deambulan incansablemente de sitio en sitio buscando el canto vivo de sus habitantes y la tierra que acoja sus restos después de la muerte. Los coreanos, desde tiempos remotos, viven cantando y se llaman y comunican con melodías. Las montañas, los sembrados, los mares y los ríos reciben sus cantos como plegarias y ofrendas. El canto está estrechamente vinculado al lugar de nacimiento. Fuera de él, el peregrino, cuando canta, añora su familia y...

From the itsy-bitsy to the huge and hairy, kids will be drawn into the spider’s world. This book shows spiders going about their lives, including building webs, catching prey, and hatching babies.

"Some things are so huge or so old that it's hard to wrap your mind around them. But what if we took these big, hard-to-imagine objects and events and compared them to things we can see, feel and touch? Instantly, we'd see our world in a whole new way." So begins this endlessly intriguing guide to better understanding all those really big ideas and numbers children come across on a regular basis. Author David J. Smith has found clever devices to scale down everything from time lines (the history of Earth compressed into one year), to quantities (all the wealth in the world divided into one...