http://www.sciencedaily.com/releases/2009/12/091214200952.htm ScienceDaily, Dec. 15, 2009
Studies show that even on well maintained playgrounds there are over 200,000 injuries, doctors and scientist believe that most of these injuries resulted in falls on granite sand or wood engineered fiber. over the next two in a half years scienctist randomly studied 19 schools various playgrounds. The IV was the type of sand in the playground. The DV was the amount of injuries from each playground. I believe this experiment was not a very good one. One way it could be improved is by making sure all the kids participate in playing on the playground.
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