Nadie Es El Dueño Del Mundo

"It's easy for superpowered crimefighters to turn invisible and sneak up on bad guys. What about real crimefighters? Find out how scientists are using technology to make things disappear before our eyes. Now in Spanish!"--

Identify three-dimensional shapes all around the world in this Spanish-translated e-Book! Figuras en nuestro mundo (Shapes in Our World) gives readers practice identifying familiar shapes like cones, cylinders, pentagons, polygons, and prisms, while familiarizing them with STEM themes and more advanced geometry concepts. Children will learn more about vertices, symmetry, and bases. With each shape, this book gives readers information about an example of the shape, be it a building, a honeycomb, or a tree trunk! With an accessible glossary, clear mathematical diagrams, practical examples, and...

Estás a punto de embarcarte en una fantástica travesía por la historia de los robots. Los robots han formado parte de nuestras vidas desde hace más tiempo del que quizás imaginas. Su origen es fruto del eterno impulso del ser humano de crear vida artificial para trabajar, medir el tiempo, observar el universo o crear música, entre muchas cosas, y su evolución es continua y cada vez más rápida. A lo largo de este extraordinario viaje conocerás a todos los robots residentes de Robotland, tanto a los habitantes más modernos como a sus antepasados más primitivos o, incluso, a los que...

When President Thomas Jefferson bought the Louisiana Territory from cash-strapped France in 1803, he doubled the size of the United States without really knowing what he was getting. He dispatched Meriwether Lewis and William Clark and their Corps of Discovery to explore a territory that would include part or all of fifteen future states and to seek a water route to the West Coast. Westward expansion began immediately, all for the bargain price of 15 million dollars. This book richly explores this fascinating part of history.