Stage 4 books introduces and practises 5 more letters and sounds - j u k x w. Each stage has a small number of "Heart Words" - that is high frequency words that children cannot decode at this stage and need to learn by heart. Later these words won't be Heart words.

Heart words: of are too for her
Stage 4 stories:
16. At the fun run: Mum and Pip are at the fun run. What happened? Did they win?

17. Mud: Mum, Dad, Pip and tim are having a picnic when a bug hops on their rug.

18. In the log hut: Pip and Tim build a log hut. They put in a rug and enjoy a picnic together.

19. On the bus: Mum works at the local vet. She goes to work on the bus. Mum looks after a dog and her six pups.

20. The big red box: The postman delivers a big red box addressed to their Dad. Pip and Tim want to know to know what is inside. What is inside this big red box?