A children's picture book series perfect for English language learning, consisting of illustrations and simple sentences, with a total of 36 books. - Series Name: Key Words - Number of Books: 36 total - Target Age: Preschoolers to Elementary School Students - Content Description: Picture book series for English language learning - Features: This trusted series has taught generations of children to read by repeatedly learning 300 frequently used keywords. By progressing through the books in order from 1a to 12c, children develop reading skills and confidence, acquiring the word recognition and phonics skills necessary to become fluent and independent readers. The series is divided into 12 levels, with three books (a, b, and c) in each level. Series a: Gradually introduces new vocabulary. Series b: Further practices the vocabulary introduced in the "a" series. Series c: Connects reading with composition and phonics. All the words introduced in the "a" and "b" books are reinforced and strengthened in the "c" books. We apologize, but there are some instances of children's writing in places, but there are no issues with the content. If you are interested, please contact us.