Key Words with Peter & Jane" uses the most frequently met words in the English language as a starting point for learning to read successfully & confidently. The Key Words reading scheme is scientifically researched & world renowned. In book 4a Peter & Jane explore different activities in 42 new words including then house make & read. Once this book has been completed the child moves on to book 4b. " The Key Words with Peter & Jane Books" work because each of the key words is introduced gradually & repeated frequently. This builds confidence in children when they recognize these key words on sight (also known as the look & say method of learning). Examples of key words are: the one two he. There are 12 levels each with 3 books: a b & c. " Series a" gradually introduces new words. " Series b" provides further practise of words featured in " The a Series". " Series c" links reading with writing & phonics. All the words that have been introduced in each a & b book are also reinforced in the c books."