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Seesaw Science The Hammer Ruler Trick Scientific American
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Seesaw Science The Hammer Ruler Trick Scientific American
Website URL:
https://www.scientificamerican.com/article/bring-science-home-hammer-ruler-balance/
Category:
Ruler
Seesaw Science: The Hammer-Ruler Trick. ... For this fun experiment, you won't have to go searching for any century-old antique toys. All you'll need is a hammer, ...
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