LEADER 00000nam  2200385   4500 
001    AAI1465326 
005    20101102123057.5 
008    101102s2009    ||||||||||||||||| ||eng d 
020    9781109184877 
035    (UMI)AAI1465326 
040    UMI|cUMI 
100 1  Patel, Rita Manubhai 
245 10 Students' reasoning in start-unknown situations involving 
       percents 
300    98 p 
500    Source: Masters Abstracts International, Volume: 47-06, 
       page: 3610 
500    Adviser: Ellen Hines 
502    Thesis (M.S.)--Northern Illinois University, 2009 
520    This thesis investigated students' reasoning in value-
       unknown problems. More specifically, this research 
       examined students' strategies in solving start-unknown 
       problem situations involving percents. The purpose of this
       study was to offer teachers insight into students' 
       difficulties with start-unknown problems involving 
       percents 
520    This study was conducted using task-based interviews. Each
       interview was conducted in a preplanned setting. A 
       contingency plan was developed to guide the researcher 
       based on the students' initial responses. Interviewees 
       ranged from 4th grade elementary school students to first 
       year college students 
520    Based on this investigation the research found that 
       students had some comprehension of the start-unknown 
       problem structure. They were largely unable to consider 
       (or did not recognize the significance of) how to find a 
       percent of an unspecified quantity to add (or subtract) as
       an adjustment back to a start-unknown quantity. This may 
       be due to an underdeveloped understanding of the problem 
       situation or underdeveloped algebraic reasoning 
590    School code: 0162 
650  4 Education, Mathematics 
650  4 Mathematics 
690    0280 
690    0405 
710 2  Northern Illinois University.|bMathematical Sciences 
773 0  |tMasters Abstracts International|g47-06 
856 40 |uhttp://pqdd.sinica.edu.tw/twdaoapp/servlet/
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