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Did you know that pigs are some of the smartest animals on Earth? Pigs keep themselves very clean. Discover more about these farm animals in My Pig.

Did you know that baby butterflies look like worms with legs? Caterpillars turn into butterflies inside a shell. Discover more about these flying insects in Butterflies, part of the Life Cycles series of EYEDISCOVER books.

Did you know that gases have no size or shape? Gases can become liquids when they get cold. Discover more interesting facts in Gases, part of the States of Matter series of EYEDISCOVER books.

Who were the earliest Americans? When, how, and from where did they enter and spread across the continent? And what is their relationship to modern Native Americans? Anthropologists develop theories to answer these questions based on the evidence they discover. Their theories—and the discoveries that prove and disprove them—are highlighted in this fascinating volume, full of awe-inspiring facts and incredible breakthroughs. Readers will feel like anthropologists and archaeologists themselves as they read about bones and artifacts, and what they reveal about the ancient cultures that roamed...

Vía rápida (A1-B1) viene a completarse con el Cuaderno de ejercicios, ideal como complemento del manual dentro y fuera del aula. En este cuaderno se proponen estrategias de aprendizaje y actividades de práctica significativa de los recursos lingüísticos presentados en cada una de las 15 unidades del Libro del alumno. Incluye secciones de práctica formal, documentos adicionales para el desarrollo de la comprensión lectora. Un apéndice final recoge las soluciones a las actividades. Vía rápida es un libro especialmente diseñado para cursos intensivos con principiantes absolutos o con...

Explains what mathematics is and how it feels to do math, and shows some basic mathematical concepts such as sorting and measuring.

The combination of violins, trumpets, sombreros, and song possesses the power to not only lighten the heart but weigh it down as well. This book journeys to the time and place where mariachi music originated and reveals the various musical traditions that combined to form the richest, most popular, and most highly regarded tradition of Mexico. La combinación de violines, trompetas, sombreros y canciones capaces de desgarrar o alegrar el corazón de cualquiera, mexicano o extranjero. Este libro viaja a través del tiempo y las regiones donde se originó el mariachi y descubre las distintas...