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....

La hermana mayor de Philip, Helen, se ha casado, y el debe mudarse con su hermanastra Lucy. Para sobrellevar su nueva vida, Philip decide crear una de esas ciudades magicas que antes construia con su anorada Helen. Pero una noche cae en un profundo sueno que le adentra en un mundo extrano.

Learn about the Victorian era while building your knowledge of equivalent fractions! Students will learn fractions while engaged in reading about the innovations of the Victorian era. 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 glossary, index, and table of contents will further understanding of reading and math concepts, and the full-color images, practice problems, and math graphs and charts make learning math easy, practical, and fun. The Explore Math sidebars and Math...

Intermediate. In 1985, elite mountaineers Joe Simpson and Simon Yates set out on a spectacular adventure: climbing to the highest peak of the Peruvian Andes. Would their years of planning pay off? From the reader series Aprende Español Con..., which features stories based on modern films and television series, carefully adapted for Spanish language students. Includes an Audio CD of the text, supplementary materials for teachers, and before and after activities for students.

* Hemos pasado décadas optimizando nuestras horas de vigilia, pero ¿qué ocurre con las preciosas horas que vivimos cuando dormimos (o lo intentamos)? * Este libro le explica todo lo que siempre ha querido saber sobre el sueño, aunque se haya sentido demasiado cansado como para preguntarlo. * Debido a que se trata de la franja de tiempo más activa para nuestro cerebro, así como del elemento más importante para vivir una vida más tranquila y feliz, el sueño se ha convertido en el tópico de nuestra época. Aprovechando el éxito de Calm, la aplicación número uno para el sueño, la...