How to take down the slogans on the classroom wall and put them back up again

1. First make sure you have some basic tools, such as a knife, a ruler, a tape cutter and a clean cloth.

2. Then use a ruler to measure the size of the slogan and determine its location on the wall.

3. Then use a knife to gently cut the slogan from the wall.

4. Then use a clean cloth to wipe the remaining glue or dust on the wall.

5. Then make sure the wall is dry, clean and smooth before re-attaching the slogan.

6. Then place the slogan on the wall, making sure it is in the correct position.

7. Then use a tape cutter or scissors to trim excess tape or double-sided tape.

8. Then after the slogan is completely posted, check whether its position is correct.

9. Finally, the slogan on the classroom wall was successfully removed and re-attached.