Experimentos con la luz

Before Texas was part of the United States, it was a nation of its own. After gaining independence from Mexico in 1836, Texas declared itself a republic. Interesting features, including a timeline and a map, guide readers through this conflict-filled period of Texas history.

Resignada, la inspectora Petra Delicado se ve obligada a ir de compras a un centro comercial. Entra en el lavabo, y, atónita, ve como una pequeña mano hace desaparecer su bolso. Tras descubrir que se trata de una niña, finalmente recupera su bolso con todo el dinero, el móvil y los documentos, pero sin algo esencial para una policía; su arma reglamentaria. Tras soportar las consabidas bromas de sus compañeros y tragarse la bronca de su jefe, Petra decide seguir la pista de la joven ladrona. Para ello contará con la colaboración de un único testigo, que resulta ser también una menor. ...

Learn all about the amazing things your muscular system and skeleton do and how to keep them healthy and strong! With vivid images and clear, informational text in conjunction with supportive diagrams, this Spanish-translated nonfiction title introduces readers to basic biological ideas and vocabulary.

We use machines every day, but most of us don't understand how they work. When they break down, most of us have no idea how to fix them. Mechanics are the masters of machines. Readers learn that mechanics work on vehicles, including cars, boats, and buses. They use special tools to take them apart and fix what's wrong, and they use their experience and technology to diagnose problems. They often work long hours, sometimes in bad weather, to get us where we need to go. Your readers will see that mechanics keep our world moving and growing.