I agree with Clinton regarding video length. Keeping the videos short
(preferable maximum about 2 minutes) is important for theoretical
reasons I won't go into here. Longer videos can work (I started using
50 minute lecture videos back in the 1980s, VCRs then) but (in my
experience) these only work with a highly motivated adult audience
such as University students - middle school students get bored and
"turn off" when they can't actually do something themselves after a
few minutes.
My experience with students using short videos as part of the
DrGraeme.net NXT-G tutorials that I've developed over the last half-
decade is (as Clinton says) that students do not hesitate to re-play a
video to check it, where they would not necessarily ask a teacher to
repeat a mis-heard statement. This has proven especially useful over
the years for shy students. Many of the girl students in the classes I
assist have been initially technology-averse - using videos has proven
very good at lessening this initial reserve.
The teachers I assist comment that the videos cut the load on the
teacher to half what it would be with printed material. It also allows
individual student progress to vary - very useful in the classes that
are not "streamed" by student ability.
A roadmap is also really important. Khan often uses 2-D roadmaps,
which are definitely better than the linear (tutorial numbering)
system I use. My experience is that some students (especially
intellectually superior boys) omit the initial low-numbered tutorials
in my web site, jumping to a higher-numbered one, and then have all
sorts of frustrating problems as they don't have the background.
Carefully grading the tutorials into a roadmap is (again in my
experience) really really important.
A caveat - I only cover initial very introductory stuff in
DrGraeme.net - it is pretty straight-forward compared with some of the
incredible material available on YouTube. However if the trends of the
last 18 months continue, my web site will receive 1.8 million requests
this calendar year, so there does seem to be an interest in this very
low-end type of material. My experience thus suggests that the
possibilities for the type of web site suggested here is very bright.
Cheers,
Graeme.
On Aug 5, 8:21 am, Clinton Blackmore <
clinton.blackm...@gmail.com>
wrote:
> On Thu, Aug 4, 2011 at 3:30 PM, James Floyd Kelly <
jktechwri...@gmail.com>wrote:
>
>
>
>
>
>
>
> > Regarding the audience/skill level and assumption of experience... when I
> > was writing up my initial thoughts on this project I had KhanAcademy.org in
> > the back of my mind... Khan's website has a "roadmap" video that basically
> > describes the direction a video viewer should take.
>
> > For example, one would never begin to watch the Calculus videos without
> > having a solid understanding of Trigonometry and Algebra. Likewise, these
> > videos should have a roadmap that suggests a viewing order. If a viewer, for
> > example, has not watched the MOVE block and LOOP block video(s), then he/she
> > is probably not going to get as much out of the Line Following video(s).
>
> > As these videos are created, we should try as much as possible to tackle as
> > many of the basic blocks first.
>
> > One other suggestion - all videos should be as granular as possible. This
> > means short and covering the shortest amount of knowledge as possible. If
> > the MOVE block video is only 1 or 2 minutes long, that's fine. Or, the MOVE
> > block could be broken into 7 or 8 videos, with each 1 minute video
> > discussing one or two of the configuration panel settings.
>
> > The idea is to have a large number of videos with each video showing 1 or 2
> > concepts and nothing else. Just a suggestion, not the rule.
>
> > Jim
>