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Wednesday, July 29, 2009

Exploring Podcasting for E-Learning (and new podcast episode released)

I'm exploring the medium of podcasting at the moment. I've previously discussed podcasting in general here, but in my view there can (and should) be more to the medium than the well-trodden 'single voice-over discusses topic' - what I call the 'fireside chat' - podcast format. To undertake this successfully demands a theoretical understanding and competency in a number of domains.

I will outline the technical aspects of creating, recording, producing, and distributing podcasts at a later time, but for now, I want to investigate some aspects of audio delivered via podcast as a learning channel.

The greatest advantage of the sound medium lies in its direct appeal to the imagination. There is a (probably apocryphal) story told that a child once said they liked radio better than TV 'because there are better pictures on the radio'. The sound Podcasting_icon'pictures' are better because they are built in the mind and imagination of the user. If done correctly, ideas and meaning can be conjured up in sound as easily as a software simulation demonstrates the steps involved in formatting a spreadsheet...

...well, perhaps not quite so easily. Sound demands a greater contribution from the learner than visually presented material. To compel this involvement - and to deserve it - the material emerging from a loudspeaker must maintain a high level of interest throughout. If it drops for one moment, the imagination is turned off like a light and all real communication is lost. However, there are many ways to stimulate the imagination: to some extent, they depend on form, and to some extent they depend on studio and recording technique. Apart from this, what is done is a matter for individual judgment and intuition.

In the analysis of any podcast, we should probably take interest as our starting point, because the one factor that all successful podcasts have in common is their ability to engage and retain the audience's interest. Gauging interest depends on our previous life experiences: we know what we like; what we're not motivated to care about leaves us relatively indifferent - very few people are interested in subjects that cannot be explained in terms of concepts that are already understood.

In this context, a podcast presents a learning stimulus, guides knowledge acquisition or learning through example, and elicits understanding. As such a podcast is a practical example of Bruner’s concept of instructional scaffolding - the learner's current level of knowledge can be described as an edifice that represents their cognitive abilities. Mayes and de Freitas (2005) describe the scaffolding as “a means of exploiting the ZPD” (p.19). The cognitive scaffold surrounds what is already known and can be done. The new is built on top of the known as the learner develops, and over time the supports can be removed as the learner can independently actualize the knowledge, behavior or skill. Each new learned knowledge or asset becomes a level in the learner’s constructed schema and this becomes the foundation for extending the learner’s ongoing development.

When we listen to somebody talking, we soon forget such relatively superficial qualities as accent and voice timbre (unless we are forcibly reminded of them at any point); we do not listen closely to the actual words, but go straight to the meaning - we forget the words almost as soon as they are spoken, the meaning we may retain. This meaning, together with its associations in the audience's mind (through visual, memory association or other means) forms an image that may be concrete, abstract, or a mixture of the two. If it is possible to present a subject in such terms, a considerable amount has been achieved in enabling the audience to learn for the podcast.

With that in mind, here is the latest episode from my 'Other' Podcast Transatlantic: the Flying Boats of Foynes ('New and Notable' according to the iTunes Podcast Store). If you choose to listen to the podcast, you'll notice that the piece is not merely a narrator telling a story: along with narration, there's dramatization, eye-witness accounts, and incidental and background music. Other sound elements included in the series of podcasts include archive recordings, wild track, and (in Part 5) a very cool sound collage to set the scene for the outbreak of World War 2 in September 1939.

The observant among you will notice that the piece isn't about e-learning. That's OK - the point of e-learning is to provide training professionals with a means of creating and distributing content that enables people to acquire information, knowledge, skills, and expertise on a diverse range of subjects: as e-learning practitioners, it's our job to facilitate this process.

In Part 3 of Transatlantic: The Flying Boats of Foynes:

On the 4th of July 1937, the Pan American flying boat Yankee Clipper inaugurated 2009-07-14_transatlantic__the_flying_boats_of_foynes_1 the west-east part of the transatlantic air route with Foynes as the fulcrum of the New York - Lisbon flight.

Chief Operator of Morse Code & Semaphore Frank Buckley describes the sight of Pan American Captain Harold Gray's Boeing B-314 Clipper arriving for the first time in Foynes, Ireland.

We get a sense of the glamour and the whiff of danger for passengers undertaking the still-difficult journey from one side of the Atlantic Ocean to the other.

We tell the story of the invention of Irish Coffee.

Click here to listen.

As one of the contributors in the podcast has quite a noticeable regional accent, I've included a transcript for the podcast - indeed, some people may find using their visual as well as their audio register is a more satisfying experience. Click here to view the transcript of this podcast (PDF, 30K).

Does this format work for podcasting in your view? Have I managed to elicit interest in the subject matter. As a listener, are you motivated to find out more, by retrieving Episodes 1 & 2 or by subscribing to the series? Let me know what you think.
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References:

Bates, A. W. (1984). Broadcasting in education: an evaluation. London: Croom Helm

Bates, A. W. (2005). Technology, e-learning and distance education. Oxford: Routledge Falmer

de Freitas, S. & Mayes, T. (2005). JISC e-Learning Models Desk Study Stage 2: Review of e learning theories, frameworks and models. [Online] London, JISC. Available from: http://www.jisc.ac.uk/uploaded_documents/Stage%202%20Learning%20Models%20(Version%201).pdf [Accessed 15th January 2007]

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