Give the subject of energy a zap! This workbook offers a brief overview of energy, its sources and uses. With clear vocabulary and illustrations, it's a great introduction to what fuels us.

Embark on a worldwide animal safari with this nature-lover's workbook! Learn about animal habitats, endangered species and more, all while honing reading comprehension skills.

Take a trip across the United States to learn geography! This guide is full of trivia, fill-in-the-blank maps, and very basic latitude/longitude practice.