Las ballenas

This book is a comprehensive, practical presentation of the principles of behavior modification and guidelines for their application. It teaches forms of behavior modification ranging from helping children learn necessary life skills to training pets, to solving personal behavior problems.

Winning the American Revolution was just the first step. After defeating Great Britain, the American colonies were united in name only. How would this independent nation be governed? During the summer of 1787, representatives went to Philadelphia to solve the problem. The result, the U.S. Constitution, created a new government, establishing the foundations of a free nation and setting a new course for history.

La oruga era muy pequeña, pero tenía un hambre enorme. Así que se pasó todo este cuento comiendo, atravesando página tras página. Hasta que finalmente se convirtió, como todas las orugas, en mariposa. Un libro agujereado de verdad por la muy glotona. Con este cuaderno puedes colorear, pegar... y pasarte de la raya construyendo tu propia versión de la pequeña oruga glotona.

When winter hits, many people in colder climates spend most of their time indoors. But what do wild animals do? Some animals spend winters hibernating. Beginning readers will learn what hibernation is, why some animals hibernate and others don't, and how hibernating animals prepare for their long sleep. Full-color photographs grab readers' attention and allow them to draw connections to the narrative. Readers will love learning about this mysterious, restful time in some animals' lives.