¿Qué hacen las abejas en verano?

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.

Readers are given helpful information about the dangers of drugs and alcohol, including narcotics, hallucinogens, and prescription medications in this Spanish-translated nonfiction book. Through detailed images, diagrams, informational text, an index, a glossary of terms, and a list of websites that provide additional information, readers are given the tools and information they need to educate themselves about addiction, drug abuse, the health and social issues that drugs and alcohol can cause, and how to say no to peer pressure.

Correlated to the science curriculum, our Spanish-language series describes how the types of homes that different animals build reflect adaptations to their environments. Through simple, easy-to-follow text, each volume looks at each type of home as a shelter from predators and weather and a place to store food and raise young. Young readers also learn how animal homes and human homes fulfill similar needs and functions.

Un sorprendente viaje por diez rutas que, más largas o más cortas y en diferentes épocas, dieron forma al mundo que conocemos hoy. Con este libro cruzarás el puente de Beringia hacia América con los primeros pobladores de ese continente y seguirás a los animales salvajes por la ruta migratoria del Serengueti. Recorrerás la red adoquinada de calzadas romanas de Inglaterra y la maravilla de la ingeniería del Gran Camino Inca, que permitieron el florecimiento de dos imperios. Conocerás a los pioneros que arriesgaban su vida en busca de oro por la remota y helada ruta de los Chilkoot, a...