Get the clapper. Then go out and put the clapper on the bell (outside of the school)
It is in the secret store room behind the filing cabinet in the detention room on Big Nate Island. You need the blue prints from Nate's locker in order to access the secret room.
you climb up the rope
The clapper.
The entrance to the secret room under the detention room is in the filing cabinet.
It it in the secret passage in the detention room on Big Nate Island.
in the detention room
In the drawer cabinet in the detention room.
by the green cabnit and what is useful in the secret room is the bell clapper
in the file cabnit to get there you must make the stink bomb
In the file cabinet, in detention, in the school.
Artur is a kid from Big Nate's school on "Big Nate Island". While searching for the lost Time Capsule, he became trapped in the "secret room" behind the filing cabinets in the Detention Room.
The missing bell clapper is hanging from the ceiling.