Obedecer las reglas

La hibernación es un ciclo que algunos animales hacen cada año. La mayoría de la gente sabe que los osos hibernan. ¿Pero por qué hibernan? ¿Y qué otros animales hibernan? Hibernation is a cycle that some animals go through every year. Most people know that bears hibernate. But why do they hibernate? And what other animals hibernate?

Computer science is all around us, at school, at home, and in the community. Anyone can learn computer science, even at the elementary school level. This book delves into essential computer science concepts using age-appropriate language and colorful images. The computer science topic is paired with an age-appropriate curricular topic to deepen readers' learning experience. The instructional guide on the inside front and back covers provides: Vocabulary, Background knowledge, Text-dependent questions, Whole class activities, and Independent activities.

In life there are lots of things that come and go, transform, or get left behind. It happens to everything . . . except this. This book deals with life changes and the passage of time with a great deal of sensitivity. To reinforce the message, each scene includes a page with special paper that invites us to witness the transformation.

Describes the life and times of the well-known hero of the American Revolution, Paul Revere, a patriot and silversmith whose midnight ride was made famous in a poem by Henry Wadsworth Longfellow.

Versión actualizada de una obra imprescindible. Con más de mil ilustraciones, creada por el artista plástico Mauricio Gómez Morin y textos del historiador Pablo Escalante Gonzalbo, este libro ofrece al lector 120 siglos de historia nacional. Un libro para toda la familia que está realizado con rigor histórico y científico, posee amenidad y es de ágil lectura. A través de él se pueden conocer 120 siglos de historia patria, desde una perspectiva histórica integral, en la que se entrelazan acontecimientos políticos y grandes cambios institucionales con datos provenientes de diversos...