Conservación de la masa (Conservation of Mass)

Light can travel faster than anything else in the universe. But what exactly is light, and where does it come from? This nonfiction Spanish book teaches students all about light, and introduces them to important scientific concepts and vocabulary terms like infrared, ultraviolet, photos, and visible spectrum. The intriguing images, detailed diagrams, and stimulating sidebars will keep students connected to the text. The fun lab activity provides a real-world learning experience that supports STEM instruction. Aligned to state and national standards, the leveled text supports differentiation....

How do you get from place to place every day? Well, believe it or not, people travel in all sorts of ways. From bikes, cars, subways, escalators, and even on animals and tramways, transportation around the world all depends on where you live and where you need to go. Get ready to learn the fascinating ways kids around the globe stay moving! This title will allow students to ask and answer such questions as who, what, where, when, why, and how to demonstrate understanding of key details in a text. • Text based questions • Bold keywords with picture glossary • Multicultural • World map

Presents a series of puzzles and exercises designed to present numbers, geometry, measurement, and other mathematical topics to seven-year-olds.

* ¿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...

Un libro para recorrer la naturaleza de la Tierra a través de sus magníficas imágenes y textos cortos. Un viaje divertido para conocer animales y paisajes de todo el planeta.