Piedra de toque

When we look up at the night sky you can see millions of stars, but what do you think we could see in space if we left Earth? If we could hop into a special ship and blast off, traveling billions of miles away from Earth, we’d see the Milky Way galaxy. In this book, readers take an incredible journey through that galaxy, exploring the universe and learning how it was formed and what will one day happen to these enormous groups of stars. From mysterious dark matter to the black holes at the center of galaxies, readers will also dive into the mysteries of the universe scientists have spent...

Sadako Sasaki tenía tan sólo doce años cuando murió. Una terrible bomba atómica fue lanzada sobre su ciudad, Hiroshima, en Japón, cuando ella contaba dos años de edad. Diez años más tarde, enfermó de la leucemia como resultado de la radicación de aquella bomba. La autora ha querido destacar en Sadako su gran espíritu y valentía a la hora de afrontar el futuro que ella sabía que le esperaba.

A little child asks the "big question" (grande question) that is never formulated: why are we on earth? and get answers from different people.

When it comes to landing a job, a portfolio has been a tool often used by graphic artists, architects, and possibly writers. In today's world, a portfolio may help just about anyone seeking a professional career. A portfolio is a collection of work samples that can bring to life the achievements and skills you present on a r廥um�. Addressing career-ready standards of the Core Curriculum, this essential book teaches readers how to build a powerful portfolio no matter what career path they are on. Tips are included on how to avoid mistakes, make a stellar presentation, and highlight student...