"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 "4a", Peter and Jane explore different activities in 42 new words including 'then, 'house', 'make' and 'read'. Once this book has been completed, the child moves on to book "4b".