Experimentos sencillos sobre el tiempo

* ¿En qué punto nos encontraríamos si no existiesen la rueda o el vidrio? Imagine la vida sin el cemento o los ordenadores. * Piense durante un momento cómo mejoran nuestra salud y nuestro bienestar las vacunas y el marcapasos. * La sofisticación de la medicina contemporánea es una proeza excepcional que permite a muchas personas vivir con unos niveles de atención sin precedentes. * Pero el progreso médico tiene un precio que también forma parte del paisaje médico actual: resistencia a los antibióticos, bacterias multirresistentes que mutan constantemente y las consecuencias...

There are lots of families, but no two are exactly the same. Conoce la familia, a fully translated Spanish edition of Meet the Family, celebrates our most precious relationships. Each title opens doors to a variety of homes and reveals the many ways people combine to form families.

Learn multiplication on a fun-filled trip to the supermarket! The displays, shelves, and layout of a local grocery store provide ample opportunities for students to learn multiplication as they are engaged in reading high-interest content. This Spanish book combines mathematics and literacy skills, and uses practical, real-world examples of problem solving to teach math and language arts content. The full-color images, math graphs and charts, and practice problems make learning math easy and fun. The table of contents, glossary, and index will further understanding of math and reading...

Introduces the holiday Cinco de Mayo and describes how it is celebrated in Mexico and in the United States.