Construyamos un patio de juegos (Building a Playground)

The family in this book is moving to a new neighborhood. They have a lot of work to do! They need to unload the moving truck, unpack boxes, and put everything away. The kids make new friends and discover all the fun they can have with the empty boxes. While building forts from the empty packing boxes, the kids discover many new shapes and their dimensions. Look inside. Can you find a cylinder?

Many animals live in water, but only some can be defined as fish. Twenty-eight thousand species of fish exist, each with different characteristics. Readers from grades one through four will learn that fish have a distinct impact on their ecosystem and will see how fish survive when well-adapted to an uncompromised environment. Beautiful photographs demonstrate the great diversity of fish and accompany intellectually stimulating explanations of their varying roles and traits. From page to page, what a fish is unfolds in vocabulary call-outs, insightful questions, and relatable...

This complete Spanish translation of the highly acclaimed Isaac Asimov's 21st Century Library of the Universe is ideal for students still developing their English-language skills.

Un agente de la CIA es relevado de sus servicios y destinado a oficina cuando el hombre que estaba bajo su vigilancia es asesinado. Empieza a investigar y descubre una trama siniestra. La estatua de una Virgen negra le proporciona la primera pista sobre una conspiración que pretende devolver el poder a una antigua dinastía. «Una novela inteligente y trepidante que hurga en demasiados asuntos sucios...» Publishers Weekly

Uno de los retos del siglo XXI es alcanzar la plena igualdad de derechos entre hombres y mujeres. Cien años después de que se celebrara por primera vez el Día Internacional de la Mujer, el 19 de marzo de 1911, te invitamos a conocer en las páginas de este libro a un grupo de mujeres que, en épocas en las que no tenían derecho a casi nada, se atrevieron a luchar por sus sueños, y llegaron, incluso, a cambiar la historia.