If a balloon pops in a forest and nobody was there to hear it, did it really make a sound? As always when learning Magic Science tricks, you might want to ask an adult to help you with this while ...

Inflate the balloon to the size you want your egg to ... Join Abby, Joel, Shini and Henry the dog and watch Blue Peter on CBBC and BBC iPlayer, you won't want to miss it! You can play games ...