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Eliminating Noise with Used Tennis Balls
Attaching used tennis balls to the feet of desks and chairs used by children in classrooms at elementary schools, etc. reduces the noises made when moving them, thereby eliminating loud noises.Irritating noises in classrooms can also be prevented, creating a comfortable environment for children.
1: Prepare tennis balls
Prepare four used tennis balls per chair and desk.
2: Make a hole
Mark a cross on a tennis ball using a marker.
Then, make a hole in the center of the cross with a screwdriver or drill.
3: Cut slits into the ball
Cut slits into the face of the ball along the cross lines.
Be careful not to make the slits too long.
(If they are, the ball will come off the feet easily.)
4: One ball done
That completes the cutting of one ball.
Do the same for the remaining balls.
5: Remove any liquid inside
Liquid remains in the balls.
Remove it.
Liquid remaining in the balls erodes the feet of desks and chairs.
To avoid this, put the balls in a place with good ventilation such as near a window until the odor is completely removed.
6: Attach to the feet
Attach them to the 8 feet of a desk and chair.
Completed appearance
Even if an entire class of children stands up at the same time, you cannot hear unpleasant, loud noise.
NPO Global Sports Alliance (Japanese)