Sometimes even following the best set of instructions means an experiment may not work out. In our Science workshop today our bouncing ball using borax and pva didn't end up at all like a ball! More along the lines of Silly Putty (adults - do you remember getting Silly Putty as a present?!).
Did you know how Silly Putty came about? Check this out
http://blog.retroplanet.com/silly-putty/
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