Reference Books

People around the world can look very different from one another, but smiles, tears and laughter can be universal. With simple, rhyming text and vi...

This is the first green guide for kindergarteners and first-graders who are ready to get busy and make a difference. An uncomplicated guide for kid...

Find out everything you ever wanted to know about your body! How do you breathe, eat, move, feel, and grow? Why does your heart beat and how does y...

IIn this mind-bogglingly hysterical and brain-meltingly informative book, the body's most vital muscle gets a thorough probing. A friendly blob of ...

Taking as its starting point a child's natural desire to understand the world, this is a series designed to entertain and to inform. This book focu...

With detailed, lively answers to a host of fascinating questions, I Wonder Why Horses Wear Shoes is a perfect introduction to horses and ponies, fe...

Favorite questions such as "Why do I get hiccups?"; "What makes me sneeze?"; "What is sleepwalking?" are answered in this lively look at the human ...

Full of lively answers to all those tricky questions about how the world works. I Wonder Why books are a terrific way to keep young minds buzzing. ...

Colorful, surprising, and full of information, the I Wonder Why books have set thousands of young minds buzzing. I Wonder Why Spiders Spin Webs is ...

Climate change can be a difficult discussion to have with children without overwhelming or scaring them. I Wonder Why There's a Hole in the Sky tak...

A plant's environment helps it grow. Weather, soil, and animals are important to a plant's survival. But do you know what happens to a plant when t...

Roots help keep plants alive. They take in water and minerals. But do you know how much of a plant is made up of its roots? Or whether roots always...

Plants have roots, stems, leaves, and sometimes flowers. Each part of a plant does a special job. But do you know what a stem does? Or how differen...

A plant can form fruit and seeds when it is pollinated. Animals and wind help spread pollen from one plant to another. But do you know how insects ...

Sunlight, air, water, and minerals help keep plants alive. But do you know how much water is needed for a seed to sprout? Or what a plant will do t...

Robots help people in many situations. Some robots rescue people trapped by tornadoes or earthquakes. Others explore volcanoes and the seafloor. An...

Robots help people in many situations. Some robots rescue people trapped by tornadoes or earthquakes. Others explore volcanoes and the seafloor. An...

Trying new foods is fun! Eating a variety of fruits, veggies, and other healthy selections helps you get the nutrients you need. How can you discov...

Robots help us understand our weather and climate. Some fly into storms to measure wind. Others dive into the ocean to learn about weather patterns...

Salty popcorn. Sweet watermelon.Your tongue lets you taste these things and more. But how does your sense of taste work? And how does it help you? ...

A hands-on approach introduces young scientists to the lever. Science theory and practical, fun projects teach the physics and the technology behin...

A hands-on approach introduces young scientists to screws. Science theory and practical, fun projects teach the physics and the technology behind t...

"The Migration of a Butterfly" is an innovative new book exploring the incredible journey of the spectacular Monarch butterfly as it migrates from ...

MY FOLD-OUT ATLAS OF THE EARTHOur planet is an amazing place! There is so much to explore. Just look at its wide variety of unique plants and wildl...