This serves threes purposes. Firstly, it helps to make readers more comfortable with the storyline by making it seem more familiar. Secondly, it adds an element of predictability. This is important because it means that children are not just experiencing the story but are able to engage with it by guessing what is coming next. Finally, it slowly draws readers into the storyline. The same pattern is seen again in Andrew's Loose Tooth. The storyline of the book deals with Andrew's loose tooth and how various people attempt to remove it. The pattern is established at the start as Andrew attempts to eat an apple. This is always described in the same way with Andrew picking up an apple, shining it on his shirt, taking a bite, and yelling. The story expands because each time this happens, Andrew yells for a different person to help him. In the first case, he yells for this mother. In the second case, he yells for his father. In the third case, he yells for his mother and his father. Like in Stephanie's Ponytail, the repetition is strong enough that the reader knows the sequence of events that are going to take place. The thing that is left unknown is how each person is going to respond to Andrew and what solution they are going to attempt. This is an additional element that helps to draw the reader into the story. At the same time, the repetitive pattern keeps the element of familiarity that helps to make the reader comfortable with the book. The same pattern is also seen in 50 Below Zero. In this book, Jason is always waking up and going to find his father, who sleepwalks. The general pattern is the same with Jason looking for his father, finding his father, waking up his father, and then having his father go back to bed. As well as the events being the same, there is also a repetition of working. For example, Jason always yells "PAPA, WAKE UP!" and this is always followed by his father jumping up and running around whatever he was sleeping on three times.