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Re: Anyone willing to lend us a ball bladder for a couple of days?
We sourced a 65 cm yoga ball from the local Walmart its a reasonable analog. I'd much rather see the students destroy a <$10 ball testing a mechanism than the actual game piece.
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Dave Button
Physics and Mathematics Teacher
Wakefield School
The Plains, VA
“Simplify and add lightness.”
― Colin Chapman, Team Lotus
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