La hora del té (Time for Tea)

What is work? You may think work is doing chores or going to a job, but you do work every time you move something from one place to another. With experiments that demonstrate these fundamental concepts, discover how you work, and how simple machines make doing work easier.

Fotografías que cuentan historias explora dos narraciones entremezclades: la historia de la fotografía en México y la historia de México en fotografías. Mediante preguntas, el libro aborda el riquísimo panorama y fotográfico al que contribuyeron autores mexicanos y extranjeros desde 1840.

Veinticinco relatos cortos para revisitar de forma amena y divertida la historia universal. Descubre 25 emocionantes y divertidos relatos con los que te transportarás a los acontecimientos más importantes de la Historia Universal, desde el Paleolítico hasta la Edad Contemporánea. Empieza un emocionante viaje a través del tiempo. ¡No te lo pierdas! ENGLISH DESCRIPTION Twenty-five short tales to review world history in a fun and entertaining way. Discover 25 fun, exciting tales that will transport you to the most important events in world history, from the Paleolithic period to the modern ...

Huracanes y tornados is one book in the Spanish-language Gran Atlas de la Ciencia series that covers today's most popular science topics, from digital TV to microchips to touchscreens and beyond. Perennial subjects in earth science, life science, and physical science are all explored in detail. Amazing graphics--more than 1,000 per title--combined with concise summaries help students understand complex subjects. Correlated to the science curriculum in grades 5-9, each title also contains a glossary with full definitions for vocabulary.