Commentary: Test Probability and Quantitative Reasoning

 

            This was a final exam; it’s pretty long, but it includes some good questions.  There are four multi-part questions: first on a probability game with a spinner; next on percent increase and decrease, using U.S. Census Data; next some manipulative problems on percentages with Cuisinaire Rods and Color Tiles; and finally a problem about credit cards and amortization tables.  The test asks estimation questions and others that require students to demonstrate number sense beyond learned tasks.  We had computers available during the test  not enough for each student, but students signed up for short sessions, and we didn’t have any backlog. 

            This is an example of one of my tests that includes rubrics for each problem.  I like putting the rubrics on the test because it forces me to think about my expectations before I grade the tests.  Also, students get a much better sense of how credit is assigned.  My tests are often long and hard (for the class in question), but students can often do well even if they skip or miss a part.  I like to leave room for students to show me what they can do, rather than making tests where students have to get almost everything right to get a good grade.  8/05

 

 

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