Subject: Re: Re-usability of LOs & Instructional Purposes
From: Clark Quinn (cquinn@knowledgeplanet.com)
Date: Sat 19 Feb 2000 - 23:48:57 MET
From: "Clark Quinn" <cquinn@knowledgeplanet.com> Subject: Re: Re-usability of LOs & Instructional Purposes Date: Sun, 20 Feb 2000 11:48:57 +1300
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>Any material that is specifically *designed* for an instructional
>purpose is designed to meet one or more specific learning objectives. I
>can imagine a unit, for example, that is designed to meet the objective
>"By the end of the unit the student will be able to construct a Web
>page using HTML and animated GIFs." To the extent that material is
>designed to meet a specific objective, it must be less effective at
>meeting other, somewhat similar objectives. I would have to tweak my
>unit, for example, if I wanted the students to use simple Javascript in
>the Web page, or some JPGs.
As, I think, Errol pointed out, I think your objects are at too coarse a granularity. I see heaps of prerequisite objectives within
your objective. For instance, one would be about animated GIF's, which would have a prerequisite objective of GIF's. Etc.
The big issue is, I think: what's the RIGHT level of granularity?
I think it's likely to come down to two things. One is a result of a skill/task analysis, which should yield 'atomic' units. The
other is heuristics to guide the developer.
One heuristic is that the right level of granularity is, roughly, 'the smallest object which you would substitute for one person
than you would for another'.
For the second heuristic, I'm expecting that some Roschian sense of 'natural category' will lead to a perception of a 'natural'
level of object. To use a notion that Barney hammers me on (discussed in a subsequent message), I think that we'll find that to be
somewhere between a page and a small set of pages of HTML (or equivalent in other representations).
I believe it will take the same sort of switch of thinking that characterizes moving from procedural to object-oriented programming,
to move to this form of content authoring.
I also think it's the way things are going (as Frank's pointer to the ADL movement highlights). http://www.kuis.com/ifets is a
Flash movie KUIS produced for TechLearn about the future of objects (note that for some reason it doesn't seem to work with IE on
the Mac) that you may find entertaining. -- Clark
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