These full-color readers feature 32 pages of fun information on a variety of topics. Level 1 is for younger students who are just beginning to read. Some of the words included are too challenging for the child's ability (in the Nature's Helpers book, some of the animals included were a sea anemone and a rhinoceros), but most words are frequently used and will help your reader build a foundation. Level 2 is for students who read with help and can read slightly longer sentences. Level 3 is for students who can read alone and can handle multi-syllable words and more complex sentences. These fun readers are sure to captivate your child and help build a foundation of a lifetime of reading.