themes and results from acm’s international computing education research (icer) workshop series
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Themes and Results from ACM’s International Computing Education Research (ICER) Workshop Series. Mark Guzdial Professor, School of Interactive Computing College of Computing Georgia Institute of Technology. ACM International Computing Education Research Workshop . - PowerPoint PPT PresentationTRANSCRIPT
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Themes and Results from ACM’s International
Computing Education Research (ICER)
Workshop SeriesMark Guzdial
Professor, School of Interactive ComputingCollege of Computing
Georgia Institute of Technology
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Created as an outlet for the “Bootstrapping” and “Scaffolding” efforts to re-create CS Education Research in the United States.◦ Funded by National Science Foundation (Andy Bernat)◦ Josh Tenenberg (U Wash) with Sally Fincher and
Marion Petre Built around Multi-Institutional, Multi-National
(MIMN) studies.◦ Why do things go wrong? Because of teacher?
School? Approach?◦ Or maybe because learning CS is just hard?
ACM International Computing Education Research Workshop
All ICER Papers can be found at http://www.acm.org/dl
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Building from Teaching to Research
All ICER Papers can be found at http://www.acm.org/dl
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Why do CS students fail their first course?
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Why do students drop out of their first course?
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Why do students fail their first CS course?
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What do students know about computing before they start? (Part 1)
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What do students know about computing before they start? (Part 2)
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What do students know about computing before they start? (Part 3)
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Whether “Objects-first” really matters
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What Developers really do
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Questions?
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Media Computation: Teaching Computing to Everyone Fall 1999:
All students at Georgia Tech must take a course in computer science.◦ Considered part of General Education, like
mathematics, social science, humanities…
1999-2003: Only one course met the requirement.◦ Shackelford’s pseudocode approach in 1999◦ Later Scheme: How to Design Programs (MIT
Press)
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One-class CS1: Pass (A, B, or C) vs. WDF (Withdrawal, D or F)
Success Rates in CS1 from Fall 1999 to Spring 2002 (Overall: 78%)
Architecture 46.7%Biology 64.4%Economics 53.5%History 46.5%Management 48.5%Public Policy 47.9%
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Contextualized Computing Education
What’s going on?◦ Research results: Computing is
“tedious, boring, irrelevant” Since Spring 2003, Georgia Tech
teaches three introductory CS courses.◦ Based on Margolis and Fisher’s
“alternative paths” Each course introduces computing
using a context (examples, homework assignments, lecture discussion) relevant to majors.◦ Make computing relevant by teaching
it in terms of what computers are good for (from the students’ perspective)
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Media Computation:Teaching in a Relevant Context Presenting CS topics with
media projects and examples◦ Iteration as creating
negative and grayscale images
◦ Indexing in a range as removing redeye
◦ Algorithms for blending both images and sounds (weighted sums) and for scaling (sampling).
◦ Information encodings as sound visualizations
16
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Results:CS1“Media Computation”Change in Success rates in CS1 “Media
Computation” from Spring 2003 to Fall 2005(Overall 85%)Architecture 46.7% 85.7%Biology 64.4% 90.4%Economics 54.5% 92.0%History 46.5% 67.6%Management 48.5% 87.8%Public Policy 47.9% 85.4%
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Survey One Year Later 19% of respondents had programmed since class
ended
"Did the class change how you interact with computers?”
◦ 80% say “Yes”◦ “Definitely makes me think of what is going on behind
the scenes of such programs like Photoshop and Illustrator.”
◦ 'I understand technological concepts more easily now; I am more willing and able to experience new things with computers now’
◦ 'I have learned more about the big picture behind computer science and programming. This has helped me to figure out how to use programs that I've never used before.’
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Similar results at a 2 year public college.
What is relevance?◦ Not useful for degree.◦ Somewhat useful for career.
◦ Mostly useful for life. Would you like more
CS?◦ GT 15.2% “Strongly
Disagree.” <25% agree.
◦ More MediaComp? GT and Gainesville over 40% agree.
Results at Gainesville College
(Tew, Fowler, Guzdial, SIGCSE 2005)
(Tew, Fowler, Guzdial, SIGCSE 2005)