Answer:
Correct order below.
Step-by-step explanation:
First - sneaking onto the Radley back porch
Second - Jem's pants mended and folded (due to the porch events)
Third - More knothole discoveries
Fourth - Knothole cemented
Fifth - Snowfall
Sixth - Miss Maudie's house burns down
Since I have yet to find an answer with the correct order, I thought I would help out. Good luck!