(I have edited your questions since only one query is allowed per eNotes post.)

The children are slowly coming to the conclusion that the gifts they have found in the secret knothole of the Radley oak could only have come from Boo Radley. So, Jem decides that their next course of action will be to thank Boo for the presents, but he chooses an unusual way of delivering the message: He plans to attach the note to the end of a fishing pole and attach it to a loose shutter on the Radley house. Unfortunately, the pole will not reach the house, and Atticus catches them with the note. The children have not told Atticus about the gifts or the knothole, so Dill tells Atticus that "We thought he might enjoy us..." Atticus demands that the children "stop tormenting that man," and stop playing that "asinine game." Then he reminds them that

... the civil way to communicate with another being was by the front door instead of a side window.  (Chapter 5)