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Explaining program code

giving students the answer helps - but only just
Simon, Susan Snowdon
Publikationsdatum:
Zu finden in: ICER 2011 (Seite 93 bis 100), 2011
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Of the students who pass introductory programming courses, many appear unable to explain the purpose of simple code fragments such as a loop to find the greatest element in an array. It has never been established whether this is because the students are unable to determine the purpose of the code or because they can determine the purpose but lack the ability to express that purpose. This study explores that question by comparing the answers of students in several offerings of an introductory programming course. In the earlier offerings students were asked to express the purpose in their own words; in the later offerings they were asked to choose the purpose from several options in a multiple-choice question. At an overseas campus, students performed significantly better on the multiple-choice version of the question; at a domestic campus, performance was better, but not significantly so. Many students were unable to identify the correct purpose of small fragments of code when given that purpose and some alternatives. The conclusion is that students' failure to perform well in code-explaining questions is not because they cannot express the purpose of the code, but because they are truly unable to determine the purpose of the code - or even to recognize it from a short list.

Von Simon, Susan Snowdon im Konferenz-Band ICER 2011 im Text Explaining program code (2011)

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