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A Web-based Automatic Program Grader Don Colton, Leslie Fife, Andrew Thompson School of Computing

A Web-based Automatic Program Grader Don Colton, Leslie Fife, Andrew Thompson School of Computing Brigham Young University Hawaii. Order of Presentation. Motivation/Rationale GradeBot Discussion WebBot Improvements Observed Results Conclusions/Future Work. Motivation/Rationale.

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A Web-based Automatic Program Grader Don Colton, Leslie Fife, Andrew Thompson School of Computing

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  1. A Web-based Automatic Program Grader Don Colton, Leslie Fife, Andrew Thompson School of Computing Brigham Young University Hawaii

  2. Order of Presentation • Motivation/Rationale • GradeBot Discussion • WebBot Improvements • Observed Results • Conclusions/Future Work

  3. Motivation/Rationale • Ability to program – critical tool • Pace of assignments difficult for beginning students • Beginners need more and smaller steps • Beginners need rapid feedback • Grading Burden Introduced • Large Classes • More assignments with fast feedback • Perfect Programs Paradigm

  4. GradeBot • Grading Model • Submit programs in any supported language • Automated Test Case Creation • Comparison to expected output • Expected results (with test case) returned for debugging • Infinite Loops Handled • Core Dumps Eliminated • New Lab Creation Simplified

  5. WebBot • Adds a User Interface to GradeBot • Simplify the Editing/Submission Process to decrease startup time for new students. • Postpone the challenge of learning new tools (Emacs, IDEs, etc.)

  6. WebBot Login

  7. WebBot Workspace (frames)

  8. WebBot Status Report

  9. WebBot Options Page

  10. WebBot Discussion • IDE Introduction • not prevented • only delayed • Cheating

  11. Observed Results

  12. Conclusions/Future Work • Does Not Handle • Style not graded • Cannot provide detailed help in all cases • Does Handle • Large number of Requests • Perfect Programming Paradigm • Open Entry/Open Exit • Next: Instructor Interface Module

  13. Mahalo!

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