Lee and Pat like to play. Word by Word Graded Readers for Children, #2

Lee and Pat like to play, but they also like to learn. However, their very clever dog, Kim, may be learning even more than the children! The story is told in language (words and structure) that has been rigorously selected to be as simple and understandable as possible for young readers. For example, did you know that just 25 most commonly used words make up about one-third of all words written or spoken in English? The first 100 most frequently used words make up about one-half of all written and spoken English.
By the end of the 12-book Word by Word series, children will have learned the 1, 000 most frequently used words which comprise more than 95% of all written and spoken English.