<div dir="ltr">Hi Michael,<div><br></div><div>There is a difference in the questions here. One is asking for the purpose of a DFD and one is asking about what a DFD must always show. While this will be of no consolation to your students and mine, the questions are different.</div><div><br></div><div>IMO - I dislike questions like this as we seem to be assessing the grammar and the comprehension of students more than their ability to apply the KK and skills.</div><div><br></div><div>Cheers,</div><div>Adrian</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Oct 31, 2019 at 1:16 PM Cooper, Michael J <<a href="mailto:cooper.michael.j@edumail.vic.gov.au">cooper.michael.j@edumail.vic.gov.au</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<p class="MsoNormal">Hi fellow SD teachers,<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">One of my more conscientious students noticed this in the 2016 and 2017 VCAA SD papers during revision and I thought I should get some clarification:<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">2016 Multiple Choice question 18:<u></u><u></u></p>
<p class="MsoNormal" style="margin-left:36pt">A data flow diagram can be used as a tool when designing software. Data flow diagrams must always show
<u></u><u></u></p>
<p class="MsoNormal" style="margin-left:72pt">A. the decisions that are made when sub-modules are called.<u></u><u></u></p>
<p class="MsoNormal" style="margin-left:72pt">B. the sequence of tasks involved in completing a project.
<u></u><u></u></p>
<p class="MsoNormal" style="margin-left:36pt;text-indent:36pt">C. where data originates and where it is stored.
<u></u><u></u></p>
<p class="MsoNormal" style="margin-left:36pt;text-indent:36pt"><b><span style="color:rgb(192,0,0)">D. the specific data flows between processes.<u></u><u></u></span></b></p>
<p class="MsoNormal" style="margin-left:36pt"><u></u> <u></u></p>
<p class="MsoNormal" style="margin-left:36pt">The answer in the Examiners report is
<b>D</b>.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">2017 Multiple choice question 8<u></u><u></u></p>
<p class="MsoNormal" style="margin-left:36pt">The purpose of a data flow diagram is to display
<u></u><u></u></p>
<p class="MsoNormal" style="margin-left:72pt">A. the organisation of data in storage.
<u></u><u></u></p>
<p class="MsoNormal" style="margin-left:72pt"><b><span style="color:rgb(192,0,0)">B. where data originates and where it is stored.
<u></u><u></u></span></b></p>
<p class="MsoNormal" style="margin-left:72pt">C. the sequence of tasks involved in completing a project.
<u></u><u></u></p>
<p class="MsoNormal" style="margin-left:72pt">D. the order in which the processes within a system occur<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"> The answer in the Examiners report is <b>B</b>.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">In the 2016 paper, option C has the EXACT same text as option B in 2017, however it was not the answer.
<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">The examiners report made a note on question 8 for the 2017–
<u></u><u></u></p>
<p class="MsoNormal" style="text-indent:36pt"><i>significant number of students confused the purpose of a data flow diagram. The purpose of a data flow diagram is to
<b>display where data originates and where it is stored</b>. <u></u><u></u></i></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Based on this information, I should be telling the students to follow the description in the examiner’s report, correct?<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><span>Michael Cooper<u></u><u></u></span></p>
<p class="MsoNormal"><span>ICT Coordinator & Network Support<u></u><u></u></span></p>
<p class="MsoNormal"><span><u></u> <u></u></span></p>
<p class="MsoNormal"><span><img width="175" height="56" style="width: 1.8229in; height: 0.5833in;" id="gmail-m_6460229711908508455Picture_x0020_1" src="cid:16e1f9b47054cff311" alt="BSC Logo"><u></u><u></u></span></p>
<p class="MsoNormal"><span><a href="http://braybrooksc.vic.edu.au/" target="_blank">braybrooksc.vic.edu.au</a><u></u><u></u></span></p>
<p class="MsoNormal"><u></u> <u></u></p>
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