[Year 12 IT Apps] RE: itapps Digest, Vol 49, Issue 19

Thu Mar 5 15:07:36 EST 2009

Hi Sandra, I am wiiling to help - I am at Marian College is Sunshine West.

dani
----- Original Message ----- 
From: "Sandra Mobbs" <smobbs at sjcmelb.catholic.edu.au>
To: <itapps at edulists.com.au>
Sent: Thursday, March 05, 2009 2:14 PM
Subject: [Year 12 IT Apps] RE: itapps Digest, Vol 49, Issue 19

>
> Hello Everyone
>
> I have only 4 students in my IT Apps class and need to partner up with 
> another school for moderation. If there is anyone in the general 
> direction/area of Deer Park that would be happy to partner up could you 
> please email me.
>
> Thanks
>
> Sandra Mobbs
> St Joseph's College Melbourne
> smobbs at sjcmelb.catholic.edu.au
>
> ________________________________
>
> From: itapps-bounces at edulists.com.au on behalf of 
> itapps-request at edulists.com.au
> Sent: Thu 5/03/2009 1:37 PM
> To: itapps at edulists.com.au
> Subject: itapps Digest, Vol 49, Issue 19
>
>
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> Today's Topics:
>
>   1. RE: information needed for gantt charts (PARAGREEN,  Chris)
>   2. Re: information needed for gantt charts (Mark Kelly)
>   3. RE: information needed for gantt charts (Allan Barnes)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 5 Mar 2009 12:36:55 +1100
> From: "PARAGREEN,  Chris" <Chris.PARAGREEN at kew.vic.edu.au>
> Subject: RE: [Year 12 IT Apps] information needed for gantt charts
> To: "Year 12 IT Applications Teachers' Mailing List"
>        <itapps at edulists.com.au>
> Message-ID:
>        <A3D8B10E8C0C6E48B45AB6DECF4357E4039C7700D3 at QEXCH.kew.vic.edu.au>
> Content-Type: text/plain; charset="us-ascii"
>
> My first post as a newbie IT teacher!
>
> "Just" a question about some of the definitions for Gantt charts....
> According to Potts (p30), lead time is, "... time leading up to or before 
> a task." It further explains the concept, but essentially this is it.
> My understanding is that lead time is the time available to begin a 
> dependant task before its predecessor is finished.
> For example, you can't set up a computer until the box has arrived, but 
> you can prepare the room in advance.
>
> Similarly, Potts states that slack time and lag time are the same thing, 
> whereas I think they are not.
> Slack is the available time to allow for delays, but lag is the time 
> between when a task finishes and when it's dependant task can begin.
> For example, if pouring concrete, the actually pouring task might have 
> finished, but you have to wait for the concrete to cure (the lag time) 
> before you can paint it.
>
> Are my definitions too precise for what we need to teach, am I wrong, or 
> am I missing something?
>
> Regards,
>
>
> Chris Paragreen
> IT, Mathematics and Japanese Teacher and Timetabler
> Kew High School
> 1393 Burke Road
> Kew East VIC 3102
> phone +613 9859 8652 fax +613 9819 7880
> chris.paragreen at kew.vic.edu.au<mailto:chris.paragreen at kew.vic.edu.au>
> 2008 International Year of Languages
> Languages Still Matter!
>
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> ------------------------------
>
> Message: 2
> Date: Thu, 05 Mar 2009 13:26:34 +1100
> From: Mark Kelly <kel at mckinnonsc.vic.edu.au>
> Subject: Re: [Year 12 IT Apps] information needed for gantt charts
> To: "Year 12 IT Applications Teachers' Mailing List"
>        <itapps at edulists.com.au>
> Message-ID: <49AF385A.7050404 at mckinnonsc.vic.edu.au>
> Content-Type: text/plain; charset=windows-1252; format=flowed
>
> PARAGREEN, Chris wrote:
>> My first post as a newbie IT teacher!
>
> Welcome!
>
>> "Just" a question about some of the definitions for Gantt charts....
>>
>> According to Potts (p30), lead time is, "... time leading up to or before
>> a task." It further explains the concept, but essentially this is it.
>>
>> My understanding is that lead time is the time available to begin a
>> dependant task before its predecessor is finished.
>>
>> For example, you can't set up a computer until the box has arrived, but
>> you can prepare the room in advance.
>
> Yes, that's how I understand it too.  While, strictly speaking, a
> dependent task cannot begin until its predecessor ends, in the real
> world it's sometimes possible to start a little early.
>
>> Similarly, Potts states that slack time and lag time are the same thing,
>> whereas I think they are not.
>>
>> Slack is the available time to allow for delays, but lag is the time
>> between when a task finishes and when it's dependant task can begin.
>
> Yes.  Slack is the time difference between two concurrent tasks of
> unequal duration.
>
>> For example, if pouring concrete, the actually pouring task might have
>> finished, but you have to wait for the concrete to cure (the lag time)
>> before you can paint it.
>
> That's how I understand it too.  Slack is not lag.
>>
>> Are my definitions too precise for what we need to teach, am I wrong, or
>> am I missing something?
>
> Nope.  We agree.  It's worth mentioning it to the kids, but don't bust a
> gasket over it.  The exam has never assessed lag or lead time before,
> The most complex it got has been having a dummy task once (which, by the
> way, it got wrong!)
>
> Cheers!
> Mark
>
>>
>> Regards,
>>
>>
>>
>>
>>
>> Chris Paragreen
>>
>> IT, Mathematics and Japanese Teacher and Timetabler
>>
>> Kew High School
>>
>> 1393 Burke Road
>>
>> Kew East VIC 3102
>>
>> phone +613 9859 8652 fax +613 9819 7880
>>
>> chris.paragreen at kew.vic.edu.au <mailto:chris.paragreen at kew.vic.edu.au>
>>
>> *2008 International Year of Languages *
>>
>> *Languages Still Matter! *
>>
>
>
> --
> Mark Kelly
> Manager - Information Systems
> McKinnon Secondary College
> McKinnon Rd McKinnon 3204, Victoria, Australia
> Direct line / Voicemail: 8520 9085
> School Phone +613 8520 9000
> School Fax +613 9578 9253
> kel at mckinnonsc.vic.edu.au
>
> Webmaster - http://www.mckinnonsc.vic.edu.au 
> <http://www.mckinnonsc.vic.edu.au/>
> IT Lecture notes: http://vceit.com <http://vceit.com/>
> Moderator: IT Applications Mailing List
>
> RealMenDon'tNeedSpacebars.
>
>
>
> ------------------------------
>
> Message: 3
> Date: Thu, 5 Mar 2009 13:37:17 +1100
> From: "Allan Barnes" <abarnes at aiet.com.au>
> Subject: RE: [Year 12 IT Apps] information needed for gantt charts
> To: "'Year 12 IT Applications Teachers' Mailing List'"
>        <itapps at edulists.com.au>
> Message-ID: <002401c99d3b$4d5e5970$e81b0c50$@com.au>
> Content-Type: text/plain; charset="us-ascii"
>
> I would agree with your definition of lead time.
>
>
>
> Slack time - in my opinion - is the 'delay' in a task on a non-critical 
> path
> where the start of a task can be delayed without lengthening the overall
> time taken for the project. For example, if the critical path takes 10 
> days,
> and there are two tasks on the non-critical path that each take 2 days 
> each,
> then the slack time for task 2 could be up to 6 days - task 2 can be 
> delayed
> by 6 days and still finish in the 10 days taken for the critical path, as
> long as there is no delay on task 1.
>
>
>
>
>
>
>
>
>
> Kind regards
>
>
>
> Allan Barnes, CEO
>
> Australian Institute of Education and Training
>
> P.O. Box 171
>
> Brunswick West 3055
>
> Ph: (03) 9387 2051
>
> FAX: (03) 9387 3470
>
> Mobile: 0409 428 221
>
> From: itapps-bounces at edulists.com.au 
> [mailto:itapps-bounces at edulists.com.au]
> On Behalf Of PARAGREEN, Chris
> Sent: Thursday, 5 March 2009 12:37 PM
> To: Year 12 IT Applications Teachers' Mailing List
> Subject: RE: [Year 12 IT Apps] information needed for gantt charts
>
>
>
> My first post as a newbie IT teacher!
>
>
>
> "Just" a question about some of the definitions for Gantt charts..
>
> According to Potts (p30), lead time is, ". time leading up to or before a
> task." It further explains the concept, but essentially this is it.
>
> My understanding is that lead time is the time available to begin a
> dependant task before its predecessor is finished.
>
> For example, you can't set up a computer until the box has arrived, but 
> you
> can prepare the room in advance.
>
>
>
> Similarly, Potts states that slack time and lag time are the same thing,
> whereas I think they are not.
>
> Slack is the available time to allow for delays, but lag is the time 
> between
> when a task finishes and when it's dependant task can begin.
>
> For example, if pouring concrete, the actually pouring task might have
> finished, but you have to wait for the concrete to cure (the lag time)
> before you can paint it.
>
>
>
> Are my definitions too precise for what we need to teach, am I wrong, or 
> am
> I missing something?
>
>
>
> Regards,
>
>
>
>
>
> Chris Paragreen
>
> IT, Mathematics and Japanese Teacher and Timetabler
>
> Kew High School
>
> 1393 Burke Road
>
> Kew East VIC 3102
>
> phone +613 9859 8652 fax +613 9819 7880
>
> <mailto:chris.paragreen at kew.vic.edu.au> chris.paragreen at kew.vic.edu.au
>
> 2008 International Year of Languages
>
> Languages Still Matter!
>
>
>
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