La luna de la Tierra (Earth’s Moon)

Como es sabido, el diseño surge como consecuencia lógica del desarrollo industrial de las sociedades tecnológicamente más avanzadas y puede explicarse, por tanto, en función de esa relación causa-efecto. Sin negar su obvia dependencia de tiempo y lugar, las razones del diseño, sus lecturas e interpretaciones, no se agotan en el exclusivo ejercicio metonímico, desde fuera, sino que invitan a ser entendidas también desde dentro, a partir de su propia realidad física y la reflexión que en ellas palpita. El libro adopta este criterio en su parte esencial: emparentar realizaciones...

The use of calendars dates back thousands of years. Why are we driven to record time, and what would happen if we did not? Who created the concept of calendars? Why do different cultures use different calendar systems? And why are calendars so important to us? It is about "time" we found out! Created in collaboration with the Smithsonian Institution, this Spanish-translated Smithsonian Informational Text builds reading skills while engaging students' curiosity about STEAM topics through real-world examples. Packed with factoids and informative sidebars, it features a hands-on STEAM challenge...

"Some things are so huge or so old that it's hard to wrap your mind around them. But what if we took these big, hard-to-imagine objects and events and compared them to things we can see, feel and touch? Instantly, we'd see our world in a whole new way." So begins this endlessly intriguing guide to better understanding all those really big ideas and numbers children come across on a regular basis. Author David J. Smith has found clever devices to scale down everything from time lines (the history of Earth compressed into one year), to quantities (all the wealth in the world divided into one...

Readers may never expect that they might free fall to Earth, but if they have ever dived into a pool, that's exactly what they've done. This Spanish-translated book shows readers how Newton's three laws of motion affect divers, skydivers, and mountain climbers' movements. Readers discover who uses gravity, who works against it, and all other forces that contribute to a successful dive or climb. After reading this Spanish-translated book, readers can decide if they will ever be interested in engaging in one of these extreme sports.