Cuerpos ajenos

Imagine traveling at half the speed of a jet plane without ever leaving the ground! Students will discover the technology that makes such speeds possible, from special tracks and safety precautions to aerodynamically designed trains. What are the limits to the speed of trains? What imposes those limits? Students also will read about the future of passenger train travel, from flying trains to trains that use huge magnets to levitate inches or centimeters off the track. Some trains safely reach speeds of more than 200 mph!

Dan Jurgens nos enseña los secretos y las técnicas necesarias para ser un buen dibujante de cómics, especialmente de los superhéroes y los villanos de Spiderman y los Cuatro Fantásticos

Forces and motion are key concepts in the elementary science curriculum. This Spanish edition of How Simple Machines Work uses simple text and full-color photographs to help ELL students understand the principles behind simple machines. Each volume includes three diagrams to enhance comprehension. The text uses authentic language and is designed to build reading skills as well as knowledge of basic science concepts.

¡Otra vez se ha perdido Gocú! El gatito se subió a un globo aerostático que lo lleva de paseo por las vocales. Cada vocal ofrece divertidísimas actividades para los recién iniciados en el proceso de alfabetización (a partir de los 4 años).