[Yr11 Information Technology] Data Flow Diagrams

[Litsa Tzelepis]

hello.
i also use potts, but i have the jacaranda text for the occassional backup.
if you have this text, try go to page 255 - 258. this should help.

i teach context diagrams and then level 0 - i then discuss level 1, level 2, etc. but tell the students they only need to worry about the context diagram and level 0.

hope this helps, litsa
  ----- Original Message ----- 
  From: Robert Minato 
  To: Year 11 Information Technology Teachers' Mailing List 
  Sent: Wednesday, September 03, 2008 7:57 AM
  Subject: [Yr11 Information Technology] Data Flow Diagrams


  I'm preparing for DFDs, something I've not taught before. The Potts text give two pages of, too me, brief cover. When I look at the DFD examples on the VITTA support cd, I feel I'm way short of knowing much about them. Context/level 0 diagrams are fine, but going further seems to leave a lot of interpretation to the imagination. Given that my students aren't very worldly, I don't expect them to grasp the topic very easily.


  How deep are we expected to cover DFDs? The study design lists: tools for representing data flows, including data fl ow diagrams.


  Does anyone have any notes to better explain level 1 and level 2?


  Regards



  Rob


  Robert Minato
  Technology Domain Leader
  Catholic College Wodonga
  02 6043 5546










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