On top of the scaffolding just to the right of the school.
The bird does not have a piece of the comic. (see related question)
All that you have to do is jump.
On the powerline
on the way top
on top of the telephone pole
The piece is on top of the "solar system" display at the far left.
The comic piece is on the right side of the school, on top of the metal framework.
Jump up and get it. (see related question)
Well it's on the Light House of the Island. Its at the very top.
The piece is floating in the air above the Kids Only room.
To get the gum in Big Nate Island, you must complete the comic sheet and give it to the man in a tan shirt. You can find him in the "Klassic Komix" store. When you start the island you must go to him first so he can give you a piece of the comic. After you've completed the comic, give it to him and he'll give you gum.
It is flying above the rock wall at the playground. You will need to jump to get it. :D