O'Really?

July 27, 2020

Join us to discuss how video production affects student engagement Monday 3rd August at 11am

The MOOC! the movie image by Giulia Forsythe image published CC-BY-NC-SA

As Universities transition to online teaching during the global coronavirus pandemic, there’s increasing interest in the use of pre-recorded videos to replace traditional lectures in higher education. Join us to discuss how video production affects student engagement, based on a paper published by Philip Guo at the University of California, San Deigo (UCSD) from the Learning at Scale conference on How video production affects student engagement: an empirical study of MOOC videos. (MOOC stands for Massive Open Online Course). [1] Here is the abstract:

Videos are a widely-used kind of resource for online learning. This paper presents an empirical study of how video production decisions affect student engagement in online educational videos. To our knowledge, ours is the largest-scale study of video engagement to date, using data from 6.9 million video watching sessions across four courses on the edX MOOC platform. We measure engagement by how long students are watching each video, and whether they attempt to answer post-video assessment problems.

Our main findings are that shorter videos are much more engaging, that informal talking-head videos are more engaging, that Khan-style tablet drawings are more engaging, that even high-quality pre-recorded classroom lectures might not make for engaging online videos, and that students engage differently with lecture and tutorial videos.

Based upon these quantitative findings and qualitative insights from interviews with edX staff, we developed a set of recommendations to help instructors and video producers take better advantage of the online video format. Finally, to enable researchers to reproduce and build upon our findings, we have made our anonymized video watching data set and analysis scripts public. To our knowledge, ours is one of the first public data sets on MOOC resource usage.

Details of the zoom meeting will be posted on our slack workspace at uk-acm-sigsce.slack.com. If you don’t have access to the workspace, send me (Duncan Hull) an email to request an invite to join the workspace. The paper refers to several styles of video production, some examples below.

Khan style tablet drawings

The paper refers to Khan style videos, this is an example, taken from Khan Academy course on algorithms, khanacademy.org/computing/computer-science/algorithms

What is an algorithm? Video introduction to Khan Academy algorithms course by Thomas Cormen and Devin Balkcom

Talking Heads

Some examples of “talking head” videos:

How to frame a talking head with Tomás De Matteis

There’s more than one way to do talking head videos, see Moving to Blended Learning, Part 3: Types of Video at www.elearning.fse.manchester.ac.uk/fseta/moving-to-blended-learning-part-3-types-of-video/

Making video-friendly slides

My colleague Steve Pettifer explains how to make video-friendly slides

Lose the words! Your PowerPoint / Keynote presentation should not be a script or a handout

References

  1. Guo, Philip J.; Kim, Juho; Rubin, Rob (2014). “How video production affects student engagement“. Proceedings of the first ACM conference on Learning @ scale conference: 41–50. doi:10.1145/2556325.2566239.

May 3, 2012

Need to re-invent the Web (badly)? There’s an App for that!

The Mobile App Trap

The App Trap: Why have just one Web App when you can have hundreds of mobile Apps? A selection of popular Android apps from Google Play, also available for iPad and iPhone from the Apple App Store

I love the convenience of mobile applications but hate the way they re-invent the wheel and are killing the Web. What can be done about it?

I’m in love with the mobile Web

I’ve been smitten with the Web since first venturing out on the information superhighway back in the nineties. This love affair is taken to a new level with the advent of the mobile Web. As an incurable information junkie, having access to news is on the move is great. Using location based services like Google Maps is fantastic, on foot, bike or in the car. I love nerdily scanning barcodes to read Amazon book reviews while browsing the shelves in bookshops, much to Tim Waterstone’s annoyance. And it can be great to have wikipedia in your pocket to settle arguments down the pub.

I hate the mobile Web too

But there’s a big problem with all this appy clappy mobile fun, it’s killing the Web through fragmentation, both for producers and consumers of information. Let me explain.

One of the great things about the Web is that you there is one app to rule them all; a “killer app” called a Web browser. There are several flavours, but they all basically do the same thing using similar technology: they let you surf the Web. One software application (a browser), gives you access to an almost infinite number of Web applications. Wonderfully simple, wonderfully powerful – we’ve got so used to it we sometimes take it for granted.

Now compare this to the mobile Web where each page you visit on a mobile suggests that you download an app to read it. Where there used to be just one application, now there are thousands of glorified “me too” Web browsers apps many of which have re-invented the Web, badly.

Consider the applications in the table below and illustrated on the right. They are all accessible from a Web browser on one of the “four screens ”:  desktop, mobile, tablet and smart-TV:

Native mobile app Purpose Web app
Amazon mobile Online retailer Amazon.com
BBC News mobile News and propaganda news.bbc.co.uk
The Economist mobile More news and propaganda economist.com
eBay mobile online garage sale ebay.com
Flickr mobile photo sharing flickr.com
Guardian mobile Even more news and propaganda guardian.co.uk
Google Reader mobile Feed reader reader.google.com
Google Maps mobile Maps and navigation maps.google.com
MetOffice mobile UK Weather metoffice.gov.uk
PostOffice mobile Postcode / Address finder royalmail.com/postcode-finder
Google Search mobile Search engine google.com
Google Translate mobile Language translator translate.google.com
Twitter mobile Entertaining time-wasting application twitter.com
Wikipedia mobile Encyclopædia en.wikipedia.org/wiki
WordPress mobile Blogging tool wordpress.com
YouTube mobile Videos youtube.com

As you can see, users are encouraged to download, install, understand and maintain sixteen different apps to enjoy this small part of the mobile Web. And this is just the tip of the iceberg, there’s bucket-loads more apps like this in Google Play and the App Store. As a user, you could just use a mobile Web browser on your phone, but you’ll be discouraged from doing so. We’ll return to this later.

Producers and consumers both suffer

As well as being a pain for users who have to manage hundreds of apps on their phones and tablets, the pain is magnified for producers of data too. Instead of designing, building and maintaining one Web application to work across a range of different screens (a challenging but not impossible task), many have chosen to develop lots of different apps. Take twitter for example, in addition to the desktop and Web apps, twitter currently makes no fewer than five different applications just for tablets and phones:

    1. twitter.com/download/ipad (for iPad)
    2. twitter.com/download/blackberry (for Blackberry)
    3. twitter.com/download/wp7 (for Windows phones)
    4. twitter.com/download/android (for Android)
    5. twitter.com/download/iphone (for iPhones)

So a challenging task of delivering content onto a range of different devices has now been transformed into an almost impossible task of building and managing many different apps. It’s not just Twitter, Inc. that chooses to play this game. Potentially any company or organisation putting data on the mobile Web might consider doing this by employing an army of android, blackberry, iPhone and windows developers on top of the existing Web developers already on the payroll. That’s good news for software engineers, but bad news for the organisations that have to pay them. Managing all this complexity isn’t cheap.

Not Appy: How do we get out of this mess?

In the rush to get mobile, many seem to have forgotten why the Web is so successful and turned their back on it. We’ve re-invented the wheel and the Web browser. I’m not the first [1] and certainly not the last [2] to notice this. Jonathan Zittrain even predicted it would happen [3,4] with what he calls “tethered devices”. One solution to this problem, as suggested at last months International World Wide Web conference in Lyon by some bloke called Tim, is to develop mobile Web apps rather than native mobile apps:

There are lots of examples of this. Sites like trains.im provide train times via a simple Web-based interface, no app required. Many Web sites have  two versions, a desktop one and a mobile one. Wikipedia has a mobile site at en.m.wikipedia.org/wiki, Flickr at m.flickr.com, The Economist at m.economist.com, BBC at m.bbc.co.uk/news and so on. But in many cases these sites are poor cousins of the native mobile apps that software developers have focused their efforts on, diluting their work across multiple apps and platforms.

Maybe it’s too late, maybe I’m suffering from the suspicious of change” syndrome described by Douglas Adams like this:

  1. everything that’s already in the world when you’re born is just normal;
  2. anything that gets invented between then and before you turn thirty is incredibly exciting and creative and with any luck you can make a career out of it;
  3. anything that gets invented after you’re thirty is against the natural order of things and the beginning of the end of civilisation as we know it until it’s been around for about ten years when it gradually turns out to be alright really.

The mobile Web makes me suspicous because many apps re-invent the wheel. I’ve argued here that it is against the natural order of the Web, we’ve waved goodbye to the good old Web [5] and its the beginning of the end. I really hope not, it would be a tragedy to carry on killing the Web as it’s given us so much and was designed specifically to solve the problems described above. Let’s hope native mobile apps gradually turn out to be alright really.

References

  1. Gary Marshall (2011). Could smartphone apps be taking us back to the days of “best viewed with … ”? Net Magazine
  2. Jason Pontin (2012). Why Publishers Don’t Like Apps: The future of media on mobile devices isn’t with Apps but with the Web Technology Review
  3. Jonathan Zittrain (2007). Saving the internet. Harvard Business Review, 85 (6) PMID: 17580647
  4. Jonathan Zittrain (2009). The Future of the Internet: And How to Stop It Penguin, ISBN:014103159X
  5. Hamish MacKenzie (2012) Web 2.0 Is Over, All Hail the Age of Mobile, Pandodaily

October 19, 2007

The Webolution Will Be Televised

The American poet and songwriter Gil Scott-Heron once famously remarked that The Revolution Will Not Be Televised [1]. Science has undergone its own quiet revolution since the invention of the Web back in 1990. This has slowly but surely changed scientific communication, not just a Revolution but a “Webolution” [2] if you like. The recent addition of television to the Web means that, to paraphrase Gil, the Webolution will be televised. You can now watch some of the webolution in science, thanks the likes of JOVE (The Journal Of Visualised Experiments), SciVee.TV, Google Video and YouTube. What are these sites like and is their scientific and technical content any good?

(more…)

Blog at WordPress.com.