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ESUG 2011, Edinburgh

ESUG 2011, Edinburgh

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LOOP Presentation Transcript

  • 1. A programming environment supporting a prototype-based introduction to OOPmartes 23 de agosto de 2011
  • 2. CONTEXT First OOP course Previous knowledge in structured programming (PASCAL) Tight schedulemartes 23 de agosto de 2011
  • 3. PROBLEM Paradigm shift A lot of new “stuff” to learn in order to get a first working programmartes 23 de agosto de 2011
  • 4. EXAMPLE IN JAVAmartes 23 de agosto de 2011
  • 5. EXAMPLE IN SMALLTALKmartes 23 de agosto de 2011
  • 6. MOTIVATION Focus on: Messages Objects Rich interaction between them Polymorphismmartes 23 de agosto de 2011
  • 7. SOLUTION Start with a custom programming environment Delay the introduction of classes and inheritancemartes 23 de agosto de 2011
  • 8. WHAT ABOUT SELF?martes 23 de agosto de 2011
  • 9. WHAT ABOUT SELF? Traits, prototypes, parent slots, etc. GUI is not familiar to the studentsmartes 23 de agosto de 2011
  • 10. FEATURES Definition and usage of objects Multiple object environments Live object diagrams Explicit diferentiation between objects and referencesmartes 23 de agosto de 2011
  • 11. EXAMPLE IN LOOPmartes 23 de agosto de 2011
  • 12. TOWARDS CLASSES saphira >> eat: aThing self weight: self weight + aThing weight. arthur >> weight ^yearsInThrone * 666 daisy >> weight ^732martes 23 de agosto de 2011
  • 13. TOWARDS CLASSES Dragon >> eat: aThing self weight: self weight + aThing weight. King >> weight ^yearsInThrone * 666 ScottishHairyCow >> weight ^732martes 23 de agosto de 2011
  • 14. EXPERIENCE WITHOUT WITH Quarter Pass Rate 100 2011 Q1 84,62% 2010 Q2 68,42% 80 2010 Q1 69,76% 60 2009 Q2 80,95% 2008 Q2 66,67% 40 2008 Q1 74,07% 20 2007 Q2 73,33% 2006 Q2 75,00% 0 Pass Ratemartes 23 de agosto de 2011
  • 15. CONCLUSIONS More time for the important concepts More time for more complex exercises Concrete to abstract learning pathmartes 23 de agosto de 2011
  • 16. QUESTIONS ?martes 23 de agosto de 2011