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Activiy shows need for replication
I found that in one class, nobody got a clean 2:1 ratio, but all had more hydrogen. In other classes, got some 2:1 gas ratios, and really drove home the point of replication. I think kids had some powerful A-HA! moments!
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Exploring Our Fluid Earth, a product of the Curriculum Research & Development Group (CRDG), College of Education. University of Hawaii, 2011. This document may be freely reproduced and distributed for non-profit educational purposes.
Sun, 01/13/2013 - 22:52
Good tip! I am planning to do this lesson sometime later this semester. I will definitely test it out beforehand to see how to optimize the setup for the device.