From birth to death, the lives of medieval Christians were greatly influenced by the Church. To prove their faith, they built massive Cathedrals as great monuments to God. At the same time… More →

The number system children will use throughout their lives is based on a place-value system. Understanding the place value system is a foundation to all operations as children progress in… More →

Class 301 has won a real truckload of number cubes. Fractions Frank, the caretaker, has found some boxes that hold different amounts of cubes--ones, tens, hundreds, and thousands. The… More →

Have you ever built something really big with building blocks? Did you need to use hundreds of blocks? Read about an after-school center, where the toys are counted in ones, tens, and… More →

Scientists use different kinds of investigations depending on the questions they are trying to answer. Accessible text and child-centered examples guide readers as they learn to plan simple… More →

Kids love machines that fly! This amazing book explains the basics of how planes and helicopters work. Topics include engines, wings, propellers, fuel, and flying safety. A quiz at the end… More →

In this book, you'll find out where planes go and how people use them. More →

Earthquakes, volcanoes, fossils, and gemstones - kids will want to put what they learn about our planet into action with exciting art activities. Fascinating activities will help make the… More →

Who knew some plants could hunt and defend themselves. Colorful photos and descriptive text help explain the plant parts and behaviors that make some plants special--and creepy. Amazing… More →

This fact-filled book describes all things plants! With terms like species, photosynthesis, life cycle, and habitat, young readers will gain an understanding of how plants have survived on… More →