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DC-EDUCATION  January 2010

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Subject:

Re: DC-Ed Application Profile: Defining resource classes for the AP

From:

Stuart Sutton <[log in to unmask]>

Reply-To:

Stuart Sutton <[log in to unmask]>

Date:

Thu, 14 Jan 2010 05:58:17 -0800

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (1 lines)

Sorry, didn't identify "[1]"-- http://dublincore.org/educationwiki/Model



Stuart



-----Original Message-----

From: Stuart Sutton 

Sent: Thursday, January 14, 2010 5:54 AM

To: 'Mikael Nilsson'; [log in to unmask]

Subject: RE: DC-Ed Application Profile: Defining resource classes for the AP



Mikael, I am assuming that both you and Mike are discussing model Ver.3a (and not Ver.3b) at [1].  Correct?  Model Ver.3a distinguishes between a LearningResource and EducationalActivityDocumentation and Ver.3b conflates these two entities.  Would your assessment set out here (and posed as a question in Mike's email) be the same if you were speaking of EducationalActivityDocumentation instead of LearningResource in Ver.3a?  In other words, could typical learning time be a property of EducationalActivityDocumentation since the resource (may) document the typical learning time of a specific activity?  I say "may" only because EducationalActivityDocumentation can instead document a ConceptualEducationalActivity in the model; and, I assume, given your assessment, that ConceptualEducationalActivity would not have a typical learning time either.  



Stuart





-----Original Message-----

From: DCMI Education Community [mailto:[log in to unmask]] On Behalf Of Mikael Nilsson

Sent: Thursday, January 14, 2010 4:10 AM

To: [log in to unmask]

Subject: Re: DC-Ed Application Profile: Defining resource classes for the AP



ons 2010-01-13 klockan 17:01 +0000 skrev Mike Collett:

> 

> Is for example a property like typical learning time that of the whole

> EducationalActivityInstance or just the bit that uses the Learning

> Resource?

> If the former then where does the typical learning time for the

> Learning

> Resource go?



The assumption here is that there is no "typical" learning time for a

learning resource, as it depends heavily on how a learning activity

using the resource is designed. The question therefore has no answer in

the proposed model. 



If the question is: "what is the typical time of [the part of a larger

activity that involves the resource]?", then the right way would be to

let the larger activity have parts that are activities

(dcterms:hasPart?), and attach the right duration to the right

sub-activity.



This is not always doable. Consider a learning activity (physics lab)

that has a typical duration of 3 hours, and which uses a certain

resource five minutes each hour (say, an animation of a physical

process). What is the typical learning time of that five-minute

animation?



> 

> Similarly, is a level that of the "instantiation of an idea for an

> educational activity" or a level of the resource itself?



Do you mean "level" as in "difficulty"? A conceptual activity can have a

difficulty for the relevant audience, but a resource can't really have a

difficulty, IMHO.



> 

> Lots of ConceptualEducationalActivities and

> EducationalActivityInstances

> exist in their own right, eg parts of a curriculum or a lecture, and

> their

> properties will be different to those associated with a learning

> resource

> (in a given educational context).



Yes, thinking about activities certainly brings up a whole different set

of properties than just thinking about resources. I think that is a good

thing, and I don't think it means DC-Ed needs to deal with all of them.



> 

> Defining properties for these entities seems to be moving way out of

> the

> original scope (that I was thinking of) - that of defining properties

> of a

> resource that may be useful in an educational context that do not yet

> have

> an obvious place.



Well, but if it is agreed that these properties do *not* reflect any

inherent attribute of the resource at all, but of certain activities

designed around the resource, it would be problematic to insist on

assigning them to the resource. 



What is the difficulty of "Moby Dick"?



/Mikael

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