Mezclas y soluciones (Mixtures and Solutions)

Presenta - 27 temas esenciales para adquirir los conocimientos gramaticales de un nivel B1. 2 apéndices, uno de formación de palabras y otro de uso de la perífrasis estar + gerundio. 1 test de autoevaluación del nivel B1.

When stunt performers go to work, they make dangerous feats look fun and easy, but there is a lot of risk behind this profession. Explore what stunt people do to prepare and keep themselves safe for a truly unique profession. In this Spanish-translated nonfiction title, readers will be introduced to a brief history of stunt performance as well as the latest tips and tricks, including stunt driving, professional fighting, and even digital effects such as computer-generated imagery and are encouraged to explore college majors and areas of study are recommended to become a stunt person. With...

Ámbar y Azul, dos gemelas curiosas (aunque, a veces, demasiado graciosillas), emprenden un intrépido viaje en busca del misterioso ADN en compañía de Pío, un pollito sabio que conoce las respuestas a todas las preguntas. Los tres protagonistas se vuelven de tamaño microscópico y exploran una célula habitada por represores insufribles, ribosomas novatos, proteínas todoterreno y otras moléculas divertidas y estructuras celulares que ejercen un papel clave en los procesos que constituyen los fundamentos de la genética.

The ancient Polynesians were amazing navigators who traversed the Pacific Ocean and settled in its many islands. How did they travel such extreme distances and know where they were going without the use of modern technology like smartphones, satellites, or even magnetic compasses to guide them? Learn the answer to these questions in this Spanish book that uses real-world examples to illustrate science concepts. Created in collaboration with the Smithsonian Institution, this Informational Text builds reading skills while engaging students' curiosity about STEAM topics. Packed with factoids and ...