Robert Friedhoffer
Robert Friedhoffer has written at least 11 books. Their most popular book is How to Haunt a House for Halloween with 0 saves with an average rating of -⭐.
 How to Haunt a House for Halloween
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 Science lab in a supermarket
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 Molecules and heat
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 Magic and perception
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 Light
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 Magic Tricks, Science Facts
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 Matter and energy
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 Sound
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 Physics lab in the home
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 Physics lab in a housewares store
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 Forces, motion, and energy
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