C鏔o mejorar tus proyectos colaborativos (Strengthening Collaborative Project Skills)

This work narrates the meeting of two young students who in a chance chat, begin to play with stars and numbers and learn about physics, chemistry and astronomy. They learn that science is in everyday life so that we imagine it is not a restricted area, only for the geniuses, but a tool, a way of life, a passion.

El racismo constituye una de las páginas más vergonzosas de la historia contemporánea. Una ideología del odio que ha marcado las relaciones entre las culturas y las naciones de nuestro tiempo presente. El presente libro trata de acercarse a las raíces históricas e ideológicas de la doctrina racista, a su desarrollo mundial durante los siglos XIX y XX y a su ocaso en nuestros tiempos. La cuestión se expone con un lenguaje claro, pero a la vez riguroso y muy contrastado, exponiendo numerosas citas de especialistas en el tema, o de las propias fuentes originales.

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!

Computer science is all around us, at school, at home, and in the community. Anyone can learn computer science, even at the elementary school level. This book delves into essential computer science concepts using age-appropriate language and colorful images. The computer science topic is paired with an age-appropriate curricular topic to deepen readers’ learning experience. The instructional guide on the inside front and back covers provides: Vocabulary, Background knowledge, Text-dependent questions, Whole class activities, and Independent activities.