Productores y consumidores (Producers and Consumers)

There is so much to explore in the Amazon! Readers are taken on an adventure through the Amazon rainforest to learn about the lush plants and beautiful animals, deforestation, and rainforest conservation in this fascinating, Spanish-translated nonfiction title that features striking photographs and riveting facts.

Most of the Earth's changes happen over millions of years, but earthquakes can force significant changes to the land in just a few moments. Readers will learn the science of plate tectonics and its role in the development of earthquakes around the globe. They will also learn that not all rocks are created equal. In fact, rocks are all different ages! This Spanish-translated book concludes with images of the damage and destruction that earthquakes can cause.

Grouping and classification are among the first math and science skills that children need to learn. This fun book will challenge children to observe natural creatures to see what makes them the same and different. It presents an interesting way of looking at objects, because the objects may not be exactly the same. For example, birds have two wings, but the wings of different birds may not look similar.

The era of Anglo-American colonization, while brief, had a great impact on the development of Texas and the United States. Readers will discover what drew Anglo-American settlers to Texas, and what caused hostilities to rise between them and the Mexican Government. Frequent sidebars introduce readers to the key figures of this era.

Nos encontramos en una época crucial para la criminología, en donde su afamado estancamiento podrá quedarse en el pasado para iniciar con una revolución no vista hasta ahora en toda América Latina, donde las viejas costumbres quedarán atrás para ser reemplazadas por nuevos métodos, técnicas, conocimientos que traerán consigo la tesis de las criminologías específicas. Este texto presenta un breve acercamiento a la importancia de éstas como campos de investigación científica aplicada, de donde se obtendrán las herramientas adecuadas para el desarrollo de la ciencia.

Our closest solar system is about 10 light years away. It has two main types of planets. Some are rocky and small, like planet Earth, while others are huge balls of gas, like Jupiter. Learn about how astronomers once thought our solar system was the one and only, to how they have now discovered hundreds of stars with planets orbiting them, which means there could be billions of solar systems in outer space! Just maybe, these alien worlds could host life, like our own amazing planet. This book allows students to use observations of the Sun, moon, and stars to describe patterns that can be...