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The author claims that teachers in Sanlee high school should assign homework no more than twice a week. To support the conclusion the author cite the following facts that though receiving less frequent homework than Sanlee ,Marlee students get better grades overall and are less likely to be required to repeat a year of school.Close scrutinizing of this argument,however,reveals that it contains several logical flaws,which render it unconvincing. First of all ,the survey must be showed to be reliable before I can accept any conclusion the author reaches based upon it.However,the arguer fail to prove that the responses are accurate or that the teachers are statistically significant in number.Additionally,whether the sample is representative deserves to doubt. In addition,the argument assumes that the math and science can reflects all subjects ,but it lacks credibility ,because math and science have their feathers which are different from others' .Even if the survey is credibility, it is all likelihood that the other subjects except math and science need homework everyday.In short,lacking evidence that math and science are typical in terms of all subjects,the author cannot convince me that teachers in Sanlee high schools should assign homework no more than twice a week. Finally,the argument unfairly claims that better grades is the er result of assigning homework on more than two or three day per week rather than some other phenomenon.the arguer ignore a host of other possible reasons for better grades.Perhaps students in Manlee have the better ability to study and they study themselves without homework.Or perhaps teachers in Manlee are better than those in Sanlee.In short,without ruling out all other possible explanations for the better grades,the author cannot convince me that the less homework is the only reason for the better grades,let alone reducing homework. In sum,the conclusion relies on the invalid and misleading assumptions that render it unconvincing as it stand.To bloster the conclusion,the author would have to substantiate that the students from the two places have the similar ability to study and that whether the quantity of homework in the different districts are same.Moreover,I would suspend my judgment about the credibility of this argument until the author can provide more information about the relationship between the grades and the homework and whether math and science and the same feather of the other subjects. |
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