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. In book 8b, Peter and Jane's family look after a friend's house in 91 new words including ' sunny', 'private', 'room' and 'dressing'. Once this book has been completed, the child moves on to book 9b.