La batalla de los árboles

Readers won't have to disassemble their favorite toys to discover what makes them work. This book explores electric, magnetic, and motion-powered toys from design to function. It introduces readers to the six simple machines and explains how they use force and motion to do work. Not every toy is a technological marvel. Readers learn about time-honored favorites including the rocking horse, Slinky, and rattles.

Offers encouragement and practical advice for meeting challenges head on, with words of inspiration and fun, reminding girls to be who they are.

Readers will have fun learning about basic external body parts in this colorful series that helps them recognize and compare human parts and various animal parts. Each book in this series focuses on one part, explaining what it is, what it is used for, and how it looks on a variety of animals.

Una aut�ntica aventura art�stica en la que habr� que encontrar 30 retratos, escondidos en las distintas exposiciones y enmarcarlos con las pegatinas que aparecen en las p�ginas finales. Y por si esto fuera poco, habr� que buscar tambi�n a Wally, a Woof, a Wenda, al mago Barbablanca y a Odlaw, sin olvidarnos de los pasatiempos. Todo ello convierte este libro en el t�tulo m�s divertido de la serie Wally. ENGLISH DESCRIPTION Ever the globe-trotter, Waldo is eager to show you his pictures. But not so fast, you have to find them first! Enter Odlaw's Picture Gallery and admire...