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Ball Tricks
Tennis Ball Trick:
This is a fun trick you can do with a piece cut from an old tennis ball.
First, you’ll need to cut an ordinary tennis ball in half.
You might need a bit of help with this, because it can be quite difficult to do.
Turn one half inside out, like this.
And nothing happens!
So what you need to do is keep trimming the half down, until you get it small enough to pop off the table.
When you turn the half ball inside out, the inside becomes the outside, and it starts to stretch its way back to its original shape.
When it does this, a trough starts to appear on the inside of the rim.
And that trough gets bigger and bigger, until the ball pops back to its original shape.
Pop it onto your finger and you’ll find that it starts to push off as soon as it starts to pop, and it’ll go even higher!
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