Bart's Puzzle Page

Bart's Puzzle Page is a story that appears in.

Plot
Bart gives the reader three puzzles to solve:
 * Find 29 mistakes in the picture. 24 mistakes are on Bart's test paper (which the reader cannot see).
 * Solve the mystery of who graffitied "Principal Skinner is a Wiener" on the wall. Lisa is the culprit as she is the only one who knows how to spell "wiener" correctly.
 * Connect the dots. The dots do not form any particular shape and the number 34 is missing. Bart also points out that connecting them will mean the comic is no longer in mint condition.