we learned that a fair test is an exsperament when you have two or more objets and they have to be different but nothing else can be when you have the exsperament in action.We did an experament and we had two different balls one was a ping pong ball and the other one was a b-ball.We put them at the same hight and droped them at the same time.Then we found out that the ping pong ball went five cm higher then the b-ball did.
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