penny drops - science-class.net
Penny Drops 2 M. Poarch – 1997 / 2004 http://science-class.net Compare your results to the results of your classmates. Did everyone in the class
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Drops on a Penny Lab - science-class.net
science-class.net6th grade science Baker 2010/2011 Adapted from Penny Drops http://www.science-class.net/Lessons/NOS/penny_drops.pdf Testing Liquid B is 75% Water & 25% Soap 1.