talking about code: integrating pedagogical code reviews into early computing courses hundhausen et...
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Talking about Code: Integrating Pedagogical Code Reviews into Early Computing Courses
Hundhausen et al. ACM Transactions on Computing Education 2013PRESENTED BY SCOTT SPURLOCK
3/18/14
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2Research Problem
How to help computer science students develop soft skills E.g., teamwork, collaboration, communication
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3Proposed Solution
Pedagogical Code Review (PCR) Small teams evaluate and discuss each other’s
code
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4Code Inspection Process
1. Identify code
2. Training
3. Individual review
4. Team review
5. Revise code
Gilb and Graham [1993] and Wiegers [1995]
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5Pedagogical Code Review (PCR)
Small team of students, plus moderator Walk through small code segment Evaluate against checklist Discuss and log issues
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6Code Review Team Roles
Author Reader Inspector Recorder Moderator
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7Code Review Issue Categories
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8Research Questions
Research questions: Do PCRs work? How should they be implemented?
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9Pedagogical Goals
Improve code quality Discuss coding practices Develop soft skills Develop positive self-efficacy Develop positive sense of community
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10PCR Implementations
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11Applying Code Inspection Process
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12Applying Code Inspection Process
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13Applying Code Inspection Process
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14Applying Code Inspection Process
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15Evaluation
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16Results: Pedagogical Goals
Improve code quality Discuss coding practices Develop soft skills Develop positive self-efficacy Develop positive sense of community
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17Results: Improve code quality
No significant differences in pre- to post-test improvement (Studies II, III, and IV).
No pre- to post-PCR improvement in solution grades (Study IV)
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18Results: Discuss Coding Practices
PCRs prompted students to consider a broad range of programming issues (Studies I, III, and IV).
Types of issues logged in PCRs shifted over the course of the semester from lower-level formatting issues to higher-level design and implementation issues (Studies I and III).
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19Results: Develop Soft Skills
Face-to-face PCRs: promoted skills in critical review, communication, and teamwork (Studies I and III).
Online PCRs: largely failed to promote such skills (Study IV).
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20Results: Self-Efficacy
Face-to-face PCRs Self-efficacy unchanged
No PCRs (Study II) and Online PCRs (Study IV) Self-efficacy decreased significantly
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21Results: Sense of Community
Across studies: no significant change Face-to-face PCR: Attitudes toward peer
learning “increased at a level that approached significance”
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22Best Practices
Establish ground rules Model the activity Require both independent and team review Avoid redundancy in reviewing Use trained moderators Require resubmission Use online tools to support PCR process Fully online model is possible
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23
Questions and Discussion
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24More
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25Study Participants
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26Timeline