Did you know that a helmet can save your life if you fall hard? It is important to always wear a helmet when on wheels. Find out more about how to be safe when riding on your bike, skateboard, or rollerblades in Safety on Wheels, part of the Safety First series. This is an AV2 media enhanced book. A unique book code printed on page 2 unlocks multimedia content. This book comes alive with video, audio, weblinks, slideshows, activities, hands-on experiments, and much more.