Por qué?

A María se le cae el mundo encima cuando su padre le dice que se trasladan a vivir a Bolivia. Un mundo desconocido que le reserva sorpresas que ella no espera. ¿Hasta qué punto el azar puede cambiar la vida de una persona? Una novela que muestra los problemas de adaptación y, también, la capacidad de superación personal.

Presenta los Marines de EE. UU. y presenta datos sobre sus reclutas y oficiales, incluidos, cuando lo viven y se entrenan.

Expanding on our popular Let’s Explore Science series, this book focuses on the scientific method. The scientific method is a step-by-step process for solving science problems. Scientists use it every day. Explaining each of the five parts; observing and asking questions, researching your topic, forming a hypothesis and testing it, designing and conducting an experiment, and analyzing and drawing conclusions from your result are all mapped out in detail. Learn how this straightforward topic can sometimes be a little trickier than it seems! This book will allow students to generate and...

In Bosques, carefully leveled text and vibrant, full-color photographs take beginning readers on a tour of a temperate forest. Readers learn about this important ecosystem and the variety of living things adapted to live there.