Dolls, stamps, rocks, insects -- you name it and children love to collect it. Cool Collections offers young readers lots of helpful information about sorting, collecting, displaying, and more. The books feature two levels of reading difficulty -- a primary-level running text discussion that guides children as they sort and classify objects featured on the page and a more detailed "Collector's Tips" box for the more serious hobbiest. Each book is illustrated with dozens of colorful photographs, and offers a helpful bibliography for readers who want to learn more.