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Contents contributed and discussions participated by Solveig Perrett

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Using Mohs' Hardness scale for fun - 4 views

www.fossweb.com/...mohsdrill.html

Science EarthScience Interactive Mohs Scale

shared by Solveig Perrett on 17 Jan 14 - No Cached

Solveig Perrett on 17 Jan 14

students use the hardness scale to pick drill bits to escape the Castle of Doom. I had fun.

<div class="cArrow"> </div><div class="cContentInner">students use the hardness scale to pick drill bits to escape the Castle of Doom. I had fun.</div>

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Solveig Perrett