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In this activity (located on page 7 of PDF), learners explore how Silly Putty was first invented and then attempt to make a batch of their own.

$10 - $20 per group Ages 4 - 11 45 to 60 minutes
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Learners experiment with a piece of Silly Putty® by stretching, bouncing, and snapping it. They then create flubber, a similar substance, by mixing diluted glue and a solution of sodium borate.

$1 - $5 per group Ages 6 - adult Under 5 minutes