Each group filled a plastic jar with a collection of granite, limestone and sandstone/shale. Then, they shook the jar for 10-minutes. My computer and overhead has a countdown timer. Whew, the noise, the dust, the sweaty kids -- but, it was worth it in the end. We got a nifty array of very fine, fine, course, very course sand. We applied a sample of that sand to our Sand Comparison Lab Notebook. We are in the computer lab tomorrow and Wednesday.
Have a great night.
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