Cómo dibujar dinosaurios

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.

Las vidas del Dr. Bethune complementa otras muchas investigaciones previas llevadas a cabo tanto por los Stewart como, en el caso español, por Jesús Majada, comisario de la exposición La carretera Málaga-Almería, visitada por casi cinco mil personas en la Universidad de Salamanca en octubre de 2006. En palabras del profesor Rodríguez Celada, director de la colección editorial “Armas y Letras” y autor del prólogo, nadie podía permanecer indiferente ante “el genio extemporáneo, el líder indiscutible, el adalid temerario, el jefe autoritario, el paladín romántico, un ser...

The rock cycle has been taking place for millions of years. However, geologists have only known about this phenomenon for about 300 years. Young terrestrial explorers are introduced to different types of rocks, where in the cycle these rocks fit, and where in Earth's layers each step takes place. Fact boxes provide readers with fun additional information. A diagram helps readers make sense of the new information they're learning.

In My Friend Uses Leg Braces, beginning readers are introduced to different characters who use leg braces, how using leg braces may affect their actions, and how we can be good friends to people who use leg braces. Vibrant, full-color photos and carefully leveled text engage young readers as they discover how to empathetic and inlude all kinds of friends.