¡La tierra está inclinada!

Young readers may have heard about the benefits of using and making the most of their resources, but how does that factor into an economic discussion? This thorough discussion defines resources and describes the different types of resources and why some divide them into three categories and others choose four. The book also addresses the concept of scarcity, showing readers how, because all resources have their limits, it is important to use them responsibly and efficiently in a healthy economy.

Sentir y Pensar. Programa de actividades para desarrollar la educación emocional en la escuela. Incluye Guía para las familias.

What takes the shape of the container it is in and changes shape when the container changes? Liquids! Liquid is a state of matter that has some big differences from solids and gases. Learn all about liquids with this colorful, Spanish-translated title! This 6-Pack includes six copies of this title and a lesson plan.

This book describes dump trucks called off-highway trucks, explaining their operating equipment and dumping beds, fuel, and jobs.