Nuestro Planeta, la Tierra

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.

How do you truly engage students in learning history? When students make personal connections to the subject, they’re much more motivated to learn. This primary source book provides firsthand accounts of history that give students personal insights into historical events. Learn about California’s history during the 20th century with this Spanish book that builds reading comprehension and social studies literacy. With a visually appealing layout, this book features captivating text, fun facts, sidebars, and time lines that help students grasp the essential concepts they need to know at their ...

Describes the life and work of the scientist who was persecuted by the Inquisition for his views of the universe.

Nací cuando mis padres ya no se querían", recuerda Adriana, mucho después de que todo haya sucedido. Por ello, la niña se crea un paraiso propio, poblado por amigos imaginarios y una familia de su elección. Esta felicidad a medida se ve perturbada cuando Adriana debe iniciar el periplo escolar y entrar definitivamente en el mundo de los adultos, un entorno que le resulta ajeno cuando no hostil. Sin embargo, siempre queda un refugio bajo las relucientes estrellas escondidas en los cristales de la lámpara del salón.