If you have already got the bell clapper, you need to jump to the top of the school and find the bell. Then go to your inventory and click 'Use' on the bell clapper. It should ring and send the children in the playground back.
It it in the secret passage in the detention room on Big Nate Island.
The missing bell clapper on big nate island is in the secret room under the detention room turn on the light and go to your right and jump on the tool table and above you is the missing bell clapper just jump at it and it will go into your items.
get the bell clapper
The missing bell clapper on big nate island is in the secret room under the detention room turn on the light and go to your right and jump on the tool table and above you is the missing bell clapper just jump at it and it will go into your items.
The bell on Big Nate Island on poptropica is located on the top school building. To reach it when you have the clapper, you need to get rid of the seagull there. (see related question)
The clapper allows you to fix the bell on top of the school, which is guarded by a nasty seagull. Get him to move and you can fix the bell. (see related questions)
The missing bell clapper is hanging from the ceiling.
You use the bell clapper.
You go down the rope, turn the power on, and find the bell clapper to put in the school bell.
Get the clapper. Then go out and put the clapper on the bell (outside of the school)
you first have to find the clapper for the school bell so they will leave
You scare away the seagulls and put in the bell clapper.