Eternas inquietudes

Learn how zookeepers at the National Zoo keep the animals healthy and happy. This Spanish book features a hands-on STEAM challenge and uses real-world examples to give insight into how the engineering design process is used to solve problems.

Explains the basic science of flight, the problems of getting vehicles into the air, different types of engines, and aircraft design, and includes instructions for making aircraft models.

Este volumen contiene ideas para que te conviertas en un elegante reloj de pie, en una simpática calabaza de Halloween, en un barco transatlántico o en un apetitoso plato de espaguetis, entre otros muchos objetos cotidianos que pueden resultar disfraces muy originales. El libro contiene 12 propuestas distintas, explicadas ?paso a paso?, más algunas posibles variaciones. Asimismo, se incluyen trucos, consejos y plantillas que facilitan la realización de cada idea.

So you think you're a martial arts master, but do you know the difference between kung fu, kendo, and karate? Students will learn about various martial arts as they practice comparing numbers. This Spanish math book combines math and literacy skills, and uses real-life examples of problem solving to teach subject area content. The full-color images, intriguing sidebars, practice problems, and math diagrams make learning math relevant and fun. Text features include a table of contents, glossary, and index to increase understanding of math and reading concepts. An in-depth problem-solving...