No te gustaría ser un soldado romano de la Muralla de Adriano!

Labelled illustrations supply the English and Spanish words for the parts of the body. On board pages.

Reptiles y anfibios is one book in the Spanish-language Gran Atlas de la Ciencia series that covers today's most popular science topics, from digital TV to microchips to touchscreens and beyond. Perennial subjects in earth science, life science, and physical science are all explored in detail. Amazing graphics--more than 1,000 per title--combined with concise summaries help students understand complex subjects. Correlated to the science curriculum in grades 5-9, each title also contains a glossary with full definitions for vocabulary.

Aunque los mayas desconocían las aplicaciones de la rueda y no utilizaban los animales ni para el trabajo ni para el transporte, lograron crear una de las civilizaciones más brillantes de la historia. A pesar de que dispusieron de una tecnología muy limitada, colonizaron una parte importante de América Central y construyeron impresionantes monumentos.

Based on the premise that all young people should learn to make decisions, respect themselves, and resolve challenging problems, this book is a self-help guide for adolescents to develop positive thinking, high self-esteem, and personal power. Exercises guide readers through learning about their own feelings, dreams, and needs while stressing that they are responsible for their own behavior and happiness. Situational anecdotes used to enhance the discussion are age-appropriate and relevant to children. Writing and keeping a journal are encouraged, and group exercises make the book useful in...