Conservación de la masa (Conservation of Mass)

This nonfiction Spanish book teaches students about energy, and introduces them to important scientific concepts and vocabulary terms like amplitude, frequency, infrasound, transverse waves, and supersonic. 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. Keep students reading with this fascinating Spanish book.

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....

Este libro reúne tres cuentos que transcurren en un viejo edificio de la Ciudad de México, protagonizados por los niños del tercer patio, acompañados de dos heroínas: Pau y Zitelina. En "El Pato cabalga", las diabluras de los chiquillos en la azotea terminan con la elevación al cielo de El Pato, el más travieso de todos. En "El secreto de la señora", Pau descubre el misterio que guarda celosamente la señora elegante, la dueña del edificio. Mientras que en "El esqueleto de Judy", los miembros del Club de Tinaco conspiran para rescatar el esqueleto de una elefanta llamada Judy (que se ...

Discusses Things That Rot And Break Down And Things That Don't, How Decomposing Things May Feed Insects Or Animals Or Help The Soil, And Talks About Recycling.

Este apasionante estudio de Maurizio Viroli, que reivindica al tan vapuleado Nicolas Maquiavelo (1469-1527) como uno de los mas inteligentes historiadores y pensadores politicos de todos los tiempos, es el mejor portico de la nueva coleccion Tiempo de Memoria, en su vertiente de Historia. Fundador de la moderna teoria politica, astuto diplomatico al servicio de su Florencia natal y desapasionado observador de los asuntos humanos, Nicolas Maquiavelo ha dado su nombre a una forma de hacer politica. Se le ha asimilado a la figura de un defensor a ultranza de la idea segun la cual el fin...

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...