Chapter 4

As the schoolyear inches along, Scout begins to realize that she's far more educated than her peers, and even more so, perhaps, than her teacher. As construction paper and crayon Projects evolve day after day, she realizes she is just plain bored.

As she walks home from school there is a huge oak tree that sits on the corner of the Radley lot. She passes it every day without incident, only one day she spots two pieces of chewing gum in a knot in the tree. After making sure it won't kill her she hastily crams it into her mouth, and Jem is furious with her when he finds out, convinced that it's poisoned by Boo Radley.

During their walk home on the last day of school Scout and Jem find another treasure in the tree, this time two old, shined up pennies.

When Dill arrives for the summer two days later the group resumes their obsession with Boo Radley. They create a play that reenacts Boo's life, and continue with it all summer long until they are very nearly caught by Atticus.