Alternative CS1 Luther Tychonievich Jim Cohoon 1 of 45 Executive - - PowerPoint PPT Presentation

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Alternative CS1 Luther Tychonievich Jim Cohoon 1 of 45 Executive - - PowerPoint PPT Presentation

Jun 02, 2023 128 likes •586 views

Alternative CS1 Luther Tychonievich Jim Cohoon 1 of 45 Executive Summary CS1X = Intro sans experience Favorable to female, minority Likely to choose CS Likely to persist to graduation 2 of 45 I dont teach high school 3 of

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Alternative CS1

Luther Tychonievich Jim Cohoon

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Executive Summary

  • CS1X = Intro sans experience

–Favorable to female, minority –Likely to choose CS –Likely to persist to graduation

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I don’t teach high school

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I don’t teach high school

  • Attendance spotty
  • 60 hours lecture + lab
  • CS1 ≈ CS AP-A
  • 200-500 students per class
  • One teacher, a dozen TAs
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Challenge

  • CS enrollment down
  • Recruit to and from CS1

–Required for engineers (from) –Elective for rest (to)

  • By default, getting self-defined

geeks

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Differentiated Instruction

  • CS1G open to all
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Differentiated Instruction

  • CS1G open to all
  • CS1E experience

required

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Differentiated Instruction

  • CS1G open to all
  • CS1E experience

required

  • CS1X

inexperience required

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Results (2002–2011)

  • Rise from 7% to 25% female
  • Rise from 450 to 1100 students
  • CS1X 60% female, 100 students
  • CS2: 1G ≤ 1E ≤ 1X ≤ HS
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CS1X Mechanics

  • Closed enrollment

–Privilege, not remedial

  • Pledge (next slide)
  • Must not have prior experience

–Grandstanding

  • Integrated lecture+lab
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CS1X Pledge

  • Sign to be admitted:

–Attend every class

…and pay attention

–Ask or answer; be helpful –Try to enjoy material –Be proselytized

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CS1X Practices

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Writing a poem For my new computer class This is an odd start

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Computers are oil I, however, am water We do not mix well Befuddled blonde brain Computer caused confusion Programming paranoid

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A little afraid Yet, I’m excited to learn. The journey awaits Computers work me. But after this course, I work computers. Computers scare me, There’s no reasoning with them. Please teach me your ways.

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Computer Science I could hate you or like you. Which one will it be? Although starting weak With much potential hidden Strongest in the end

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On my computer I will write me a program That will change the world

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Baby Steps

  • Laptops, TAs in lecture/lab
  • 72 .java files in 31 assignments
  • 164 example programs
  • (links later in slides)
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Chrestomathics

  • Programming ≠ Computer Literacy ≠ Computer Science ≠

Information Technology ≠ Information Systems ≠ Computer Engineering ≠ Software Engineering ≠ Discrete Mathematics ≠ Computational Thinking…

  • Chrestomatics (invented word)

–study of interesting/useful

things/processes

  • From problem to code
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How many in 500ml jar?

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How many in 500ml jar?

Volume of jar ÷ volume of bean

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How many in 500ml jar?

Volume of jar ÷ volume of bean (round down)

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How many in 500ml jar?

Volume of jar ÷ volume of bean (round down) (air pockets?)

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Volume of bean

5 ∙ π ∙ l ∙ w2 ÷ 24

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Volume of bean

5 ∙ π ∙ l ∙ w2 ÷ 24

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Air pockets

5 ∙ π ∙ l ∙ w2 ÷ 24 30.2% air

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Other Examples

  • Datable.java
  • FrenchToEnglish.java
  • Chart.java
  • Final projects: IM, Flocking,

Pong, Photo manipulator

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Showoffable

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Pair Programming

  • Driver + Navigator
  • Requires supervision
  • Learn better faster
  • Social (like real world)
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Positive Reinforcement

  • “Look what you’ve learned”
  • “You can do it”
  • “You should major in CS”
  • Share job prospects, good news
  • Avoid any suggestion of false

stereotypes

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Inclusion

  • Personal contact with instructor
  • Personal comments on grading
  • TAs correct instructor
  • Lots of group work
  • Lots of help and helping
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Interaction

  • When given a number,

–Stand up –If the number ≤ 1, return 1 –Otherwise

  • Give someone sitting number – 1
  • Give someone sitting number – 2
  • Return the sum of the results

–Sit down

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Recruitment

  • Recruit every time possible

–During campus visits –In bookstore (lurk) –On way to/from class

  • “You should take this class”
  • “You will do great”
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Resources

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Resources

  • cstapestry.wikidot.com

–CS1X assignments

  • NCWIT
  • You
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NCWIT

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What is interesting?

  • Survey of

interest

  • 7-point Likert
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5.53 Encryption 5.36 Password security 5.31 Card games 5.25 Instant messaging 5.18 Virus protection 5.17 Photo manipulation 5.14 Sudoku 5.14 Travel routing 5.11 Engineering applications 5.11 Text to Speech 5.08 Music player 5.00 Photo mosaics 5.00 Photo viewer 5.00 Smart appliances

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Encryption Password security Card games Instant messaging Virus protection Photo manipulation Sudoku Travel routing Engineering applications Text to speech Music player Photo mosaics Photo viewer Smart appliances

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Encryption Password security Card games Instant messaging Virus protection Photo manipulation Sudoku Travel routing Engineering applications Text to speech Music player Photo mosaics Photo viewer Smart appliances Connect four Tic-tac-toe Personality typing Daily Jumble Medical diagnosis Language translation Both liked Males liked Females liked Females and class liked

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Share

  • Examples/Assignments you use
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  • Archeology
  • Satellite/Space Applications
  • Rocket propulsion needed to leave

earth's atmosphere

  • Simulation of physics problems
  • Weather forecasting
  • Web Design
  • Search engines
  • Peer to peer networking
  • Online testing
  • Robotics
  • Real time sensor/activity programming
  • Smartphone apps
  • AppInventor
  • Artistic analysis
  • Electronic text books
  • Matrix applications
  • Truth vs Validity
  • Timing traffic lights
  • YouTube assignments or labs
  • Replace duplicate files on a volume

with links

  • Game programming

–Craps –Slot machine –Card matching with pictures –Timer games - Click and wait (e.g.

Shakes and Fidget)

–Yahtzee –Jeopardy –Guessing game

  • Accounting concepts
  • Projected savings by age
  • Compounded interest
  • Information management systems
  • Library book circulation
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Share

  • How you make a positive

environment

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Share

  • What will you change?
  • What should others copy from

you?

  • What should you change, but

will not?

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Summary

  • CS1X: privilege, baby steps,

interesting examples, reinforcement, sociability

  • Female- and minority-friendly
  • Attracts all students