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An Easy Penny Science Experiment & Interesting Facts! - Or so she says...
Science Fair - Mrs. Waugh's Classroom page
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Chemical Reactions! How to Turn a Penny Green Experiment
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Cleaning Pennies Science Experiment for Kids - Raising Lifelong Learners
HOW TO CLEAN COPPER COINS - PENNY EXPERIMENT - YouTube
Green Pennies Experiment - Little Bins for Little Hands
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