Why does the earth spin? How is a rainbow formed? Feed the flame of curiosity in your child, and find out the answers to some of those age-old questions about how the world works.

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.

The activities in this workbook do double-duty as both vocabulary practice and earth science review with a collection of word scrambles, crosswords, and quizzes about animals, plants and planets.

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.

What on Earth? This reading comprehension work revolves around facts and myths about our own planet. Extend your child's reading skills and help ideas take root with this down-to-earth workbook.