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course Phys201
6/19 @1:55pm
PhET Explorations: EstimationExplore size estimation in one, two, and three dimensions! Multiple levels of difficulty allow for progressive skill improvement.
Figure 1.26 Estimation ( http://cnx.org/content/m42120/1.6/estimation_en.jar )
First-semester physics Asst 01: Spend 15 minutes, 10 minutes to familiarize yourself with the exploration and 5 minutes to jot down your results and your insights. Submit a copy of your results and insights using the Submit Work Form, with title 'PhET Estimation'.
I spent about 10 minutes familiarizing myself with the PhET Estimation program and jotted down some of my results and insights after playing all 3 levels. For this game you guess the ratio of lengths for lines in level one. In level two, you guess the ratio of lines and objects of lines and 2D objects. In level three, you guess the ratios of objects that are lines, 2D and 3D. In level one, if your answer comes within a factor of 1.3 for lines you get points. In the second and third level, you must come within a factor of 1.6 for 2D and 3D objects. You get no points if the answer is outside the bounds of the object. My scores for level one were a score time of .59, number of estimates was 21, percent over or under was 43/57, and an average accuracy of .93. My score in level 1 was 105, my time was 177 sec, and my score/time was .59. My scores for level two were a score time of 1.77, number of estimates was 3, percent over or under was 330/230, and an average accuracy of .71. My score in level 2 was 30, my time was 16 sec, and my score/time was 1.77. My scores for level three were a score time of .36, number of estimates was 34, percent over or under was 76/24, and an average accuracy of .54. My score in level 3 was 95, my time was 261 sec, and my score/time was .36. Overall, I think this program was a lot of fun to play and helped me better understand ratios and 1D,2D, and 3D objects.
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Very good.
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