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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.

The gold dollar coin bears the image of one of the most famous Native Americans in U.S. history; Sacagawea. Though much of her life remains a mystery, this book explores the story of this extraordinary woman who helped Lewis and Clark explore the American West. Age-appropriate language and content will help beginning readers understand this fascinating time in American history and introduce them to Sacagawea's captivating story. Exciting photographs help draw readers in, and a timeline of important events will reinforce what they've learned.

Cuarto y último de la nueva edición íntegra, en cuatro volúmenes, de este gran clásico de la historiografía concebido según los cánones del espíritu de la Ilustración. Publicada por vez primera entre 1776 y 1787, esta historia de la decadencia y ruina del Imperio Romano obtuvo el inmediato reconocimiento académico y el favor de los lectores, motivando su continua reedición.

This teacher's book accompanies the Mañana coursebook and is specifically designed to support teachers in preparing their students for the Spanish B course for the International Baccalureate programme. The book contains answers to all the question in the coursebook, pedagogical aims of each exercise, advice on specific tasks aimed at Higher Level students and additional activities that complement the exercises in the coursebook.