The first Key Words with Peter and Jane book, from Ladybird. Key Words with Peter and Jane uses the most frequently met words in the English language as a starting point for learning to read successfully and confidently. The Key Words reading scheme is scientifically researched and world renowned. Book 1b follows on from 1a and introduces 16 new words, including ‘toys’, ‘has’, ‘trees’ and ‘ball’. Once this book has been completed, the child moves on to book 3b.