Estaciones (Seasons)

How are crayons made? Clear wax is melted in a factory. Once it's melted, color is added to it, it is poured into crayon-shaped molds, cooled, and wrapped in a paper label. Sorted into sets, the brightly colored crayons are boxed and sent in trucks to stores to be sold to you.

Learn how to help others in your community. This exciting Spanish nonfiction book describes the many ways that volunteers make a difference, from cleaning up parks to helping in food banks. Perfect for young readers, the book includes a short fiction stor

Basic concepts about electricity for highschool level and college. Topics include: Electrical circuits, Ohm's law, serial and parallel circuits, electric power, CD circuits, etc. With questionnaire.

With striking full-color photos and minimal text, in Spanish, this series immediately involves young readers as they discover intriguing facts about the world around them.

What is work? You may think work is doing chores or going to a job, but you do work every time you move something from one place to another. With experiments that demonstrate these fundamental concepts, discover how you work, and how simple machines make doing work easier.