Arnold Schwarzenegger

"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...

¡Bienvenido! El mundo al que llegas no es el mismo al que llegaron tus padres. El tuyo es también digital. Estás acá, aquí y ahora, pero a la vez estás en línea. Y, aunque no te acuerdes, ¡lo has estado desde antes de nacer! En este mundo hay que respetar al resto, cuidarse y ser buenas personas, ¿no? ¡El mundo digital no es tan distinto! De hecho, están muy conectados, pero debes conocerlo bien para que aprendas a protegerte, evitar riesgos y ser una excelente persona en línea.Este libro será una guía que te acompañará en tu aventura digital. Internet no es algo mágico e...

A lift-the-flap book showing milestones in a baby's development during pregnancy and the mother's experiences as it grows.

This complete Spanish translation of the highly acclaimed Isaac Asimov's 21st Century Library of the Universe is ideal for students still developing their English-language skills.