Wolfram Education Portal – Interactive maths

January 23, 2012 at 5:53 pm | Posted in educational, useful links | Leave a comment
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Given the all the recent hoo-haa about Apple’s iBooks, it is interesting to look at the new Educational Portal from Wolfram, the company behind the Mathematica computational application and the Wolfram|Alpha ‘knowledge engine’.

As you would expect, the focus is on maths, a topic that really benefits from truly interactive learning resources. The first two courses are the key foundation topics of Algebra and Calculus. “In the portal you’ll find a dynamic textbook, lesson plans, widgets, interactive Demonstrations, and more built by Wolfram education experts.” Access is currently via a free account, although they warn that they may start charging in the future. You need to download and install a free browser plug-in so that you can view the interactive CDF Computable Document Format pages.

iBooks are fine if the topic requires words, images, audio/video, animations and MCQ questions but it runs out of steam if you need to calculate, graph or visualise data. That’s where CDF really shines – not as glossy as an iBook, but seriously functional. At the moment you can view and interact with CDF on your desktop (Windows, Mac, Linux) or online (again, desktop browsers only). Their website says that Mobile apps are ‘coming soon’, including an iOS browser. That may well be the case, since they already produce many iOS apps, known as course assistants. It looks like Android users will be out of luck again – no iBooks and no CDFs :-(

Tutors can create their own CDF resources using Mathematica, so the creation of free Open Educational Resources is a possibility. It is interesting to look at the licensing agreement, which in many ways is similar to the one about Apple’s iBooks that has upset so many people. Again, if you want to give away your OER there is no problem, but if you want to sell it, Wolfram would like a slice of the action. Seems perfectly reasonable to me, and is in fact a driver in favour of OERs.

And the resources themselves? Algebra has a comprehensive collection of matching lesson plans and textbook pages, all with plenty of interactive examples, while Calculus is much less formal with 19 demonstrations and 12 problem-solving widgets. There is plenty there of interest to science, maths and engineering students from college to University.

Textbook revolution?

January 20, 2012 at 5:16 pm | Posted in waffle | Leave a comment
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It is less than 24 hours since Apple announced the iBook amidst a flurry of hype and comment, and a multitude of blogs and posts to the ALT mailing list have already dissected, analysed and speculated about ‘what it all means’. Is it already too late to add anything new to what has already been said? Probably… but no self-respecting TEL blog can let the event pass without comment. If you are bored with the whole topic already, why not take a look at the ‘excavated book’ artwork of Brian Dettmer instead…

At one level, iBooks are like the multimedia CD-ROMs that so much effort (including mine) was spent on in the 80′s and early 90′s. These combined text, images, animations and quizzes, all hyperlinked together to create an engaging self-study resource. Remember Microsoft Encarta? Where are they now? Steam-rollered by the web.

But surely the iBooks Author programme will enable anyone to publish a rich learning experience? I’m sure that most tutors could use it to lay out text and photos – but do they have the skills needed to create good diagrams, let alone animations or interactives? Looking at their PowerPoint slides, I would say the answer is no. Creating really good iBooks will take a team of people – like those used by the publishers of the first examples. Of course there will also be some extraordinary work produced by talented obsessives… but there will also be an avalanche of utterly mediocre content – like most of the self-published e-books for Kindle.

Then there is the technology lock-in: iBooks can only be read on iPads, so every student on a course will have to have one. Sorry, no Android owners allowed in this club. Are the iPads provided by the institution, and if so how does the institution manage them? Or should the students own them and be responsible for installing apps, iBooks etc? My own view is that these are personal devices and that students will take much greater care if they own them.

That brings us neatly on to the risk of theft. iPads are expensive, desirable and compact – the ideal combination for any aspiring thief. Even if the rumoured £299 iPad is available, that is still a lot of money for an debt-laden student to find. On the other hand, they wander round with expensive phones all the time, so maybe this isn’t really an issue.

The most damning posts have pointed out that students use real textbooks in ways that are not currently supported by iBooks or any other e-book formats. They need to be able to flip quickly from one marked section to another, to jot down extensive notes and (especially) to compare two or more sources side by side. However, I’m sure that apps will quickly evolve to solve all these issues and make e-books even better for academic study than printed books.

For me, though, the main thing wrong with iBooks is that they represent old-style learning – the individual student working their way through the definitive textbook, be it ever so shiny. The textbook publishing industry is under threat, but not by Apple and its iBooks, but by the wealth and plurality of information now freely available on the web, and the social networks that link learners. I think that in the near future  every HE student will use a tablet as the hub of their study – for taking notes, reading and communciation – but I doubt that iBooks will feature heavily.

 

Every Presentation Ever

January 17, 2012 at 9:59 am | Posted in waffle | 1 Comment
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Regular readers will know that PowerPoint and its misuse are one of my favourite hobby horses, so I was delighted to find this witty video that points out many of the things that can make a presentation truly awful.

(Via James Clay and his e-Learning Stuff blog)

Phase Diagrams: a blast from the past

January 9, 2012 at 10:38 am | Posted in waffle | Leave a comment
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The University IT systems were out of action for a few days (as previously noted) and that led to an email to me from Julio, a mechatronic engineer in Guatamala. He was trying to get to a website about phase diagrams in alloys that I helped to create in 1997 – and having taken a fresh look at it, I thought it would be a good topic for a post.

screenshot from phase diagrams website

At that time, I was working for the Interactive Learning Centre (ILC), an institutional project funded by the national TLTP programme. Phillipa Reed and Julian Bailey from the Department of Engineering Materials had produced an interactive guide to phase diagrams as a stand-alone application using the Toolbook multimedia programming tool. This meant that it needed to be installed on every computer that students would use, so I was tasked with turning the guide into a website that could be accessed from any computer. It thus represented a turning point in the world of ‘computer-based learning’ – a realisation that from now on, everything needed to be online.

Back in 1997, patterned backgrounds were the very latest trend in web-design; it looks so old-fashioned now! And of course it had to fit on the VGA screens of that era (256 colours, 640×480 pixels) so the diagrams are a bit small. It was also designed to be as bandwidth-efficient as possible, so all the GIF diagrams are optimised and less than 3Kb each. The aim was to make it fairly slick over a dial-up modem connection (remember those?)

However, the fundamentals are still really sound; good clear diagrams, clearly-written concise text, simple navigation, built-in help and a linked glossary. The part I am most pleased with are the quizzes I added, which took advantage of the newly-available HTML 2.0 client-side image maps – and these really transform it from an information source into a learning resource.

The website has been at the same address since 1997, so that, its basic utility and the fact that it has always been openly available mean that it now comes up #2 on Google (after Wikipedia) if you search for ‘phase diagrams’. This is definitely one of the world’s older ‘open educational resources’ and its still going strong!

WordPress stats for telic 2011

January 9, 2012 at 9:15 am | Posted in Uncategorized | Leave a comment

The WordPress.com stats helper monkeys prepared a 2011 annual report for this blog.

Here’s an excerpt:

A New York City subway train holds 1,200 people. This blog was viewed about 5,200 times in 2011. If it were a NYC subway train, it would take about 4 trips to carry that many people.

Click here to see the complete report.

Resolutions…

January 4, 2012 at 3:58 pm | Posted in waffle | Leave a comment
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And a happy New Year to you too. I note it has been some months since I last posted here, and so this is hopefully the start of a return to normal service. All of the IT systems I use at work are unavailable (for fours days!) while a new UPS is installed – oh, the irony… Anyhow, I have  few spare moments to tend this blog.

I’m working on a presentation about the benefits of handheld electronic voting systems in large lectures, and while I was looking for examples of bad presentations I came across a collection of Dilbert cartoons about the PowerPoint experience.

Speech to text services

August 23, 2011 at 2:46 pm | Posted in systems | Leave a comment
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It’s over a year since I blogged about text-to-speech, when my conclusion was that automated conversion was insufficiently accurate to be useful. A few weeks ago I was contacted by a company called dictate2us which offers a web-based speech to text service, this time based on human transcription. You create an account, add some funds (I used PayPal) and upload your audio file to their website. Turn-around time depends on the length and complexity of the recording, but can be less than an hour for 5 min or less from a single-speaker. The cost is around £1 per minute of audio, so it pays to speak relatively quickly! There is an  iPhone app that effectively works like a combined dictaphone and typist – just the thing for a businessman on the move. You can even upload Word templates that they will slot your text into, so that your letters are ready to send as soon as you’ve given them a quick once-over.

I uploaded the MP3 audio from one of my shorter Panopto recordings as a test – the idea being to see how simple it would be to create fully accessible recordings using Synote. The dictate2us service was smooth and easy, and the text returned within the promised deadline. You do need to review it – there were a few small errors, some of them due to my poor diction and others introduced by the transcriber. For example they missed out the word ‘JISC’ – I said it clearly enough, but it means nothing to most people and so it was omitted. There might be similar problems with transcriptions of many academic subjects that involve specialised vocabulary. Overall, though, accuracy was high and the spelling and punctuation was good.

Of course the chief problem from an academic perspective is funding. It might ‘only’ cost £50 to transcribe a lecture, but who pays, and is it scalable to a module or even a programme?

The next steps are to test a couple more five-minute chunks of  ‘real’ lectures with specialised content – and also to see how much effort it takes to synchronise these transcripts with Synote.

Students’ first thoughts about lecture capture

July 25, 2011 at 4:18 pm | Posted in lecture recording | Leave a comment
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Back at the start of July, I went to see Sasha Watson, the new VP Academic Affairs for SUSU, to talk about the Panopto pilot project. He was enthusiastic about the idea of lecture capture and could see it being used by the union to create their own quick-and-dirty video podcasts (they have a great video team who produce properly edited videos).

He produced his own introduction to lecture capture using Panopto and made it available via the SUSU website, asking for comments and feedback. Quite a few of the responses were concerned about the impact on attendance – especially 9am lectures. My own view is that they might skip that lecture *once* and try watching the recording later… before realising that staying focused on a recording is much harder work. Still, take a look at their comments and see what you think.

Flashy Virtual Experiments

July 8, 2011 at 9:47 am | Posted in useful links | Leave a comment
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Syncronscope and V-CurvesI’ve been talking with the Virtual Experiments group, funded by the UK’s National STEM Programme – STEM being Science, Technology, Engineering and Mathematics. They are doing some fantastic work producing highly interactive virtual experiments, all of which freely available online through their website; I highly recommend that you try one out.

Virtual Experiments are not ‘simulations’ that are fully programmed according to a mathematical model, but are instead “produced from a recording of the experiments, usually as stills, which is then coded so that the user can manipulate the apparatus seen on screen to obtain the required results. Thus VEs aim to capture all possible results or outcomes of the original practical experiment”. The VE’s are coded in Flash, so will run on any web browser (except iPad’s… bah… but they work really well on Android tablets).

If you are a STEM tutor working at the University of Southampton and are interested in talking to them about developing a  VE for your subject, get in touch – they may be able to do this for you at no cost. If you are at another institution, they will need to charge a development fee – but I thought the sums involved were very affordable.

Up the Revolution! Join the Anti-PowerPoint Party

July 6, 2011 at 10:01 am | Posted in useful links, waffle | Leave a comment
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Not that I’m biased against Powerpoint or anything (some of my best friends are Powerpoint users) but I do have strong views about what makes a good presentation. Unfortunately, the number of poor examples I sit through greatly outweigh the good ones. I was therefore amused to see that Matthias Poehm, a rather intense Swiss public-speaking trainer, has declared himself president of his new (political?) Anti-Powerpoint Party. The declared aim is to save countless people from boredom and coincidentally save the world economy by doing away with all those tedious meetings. Hurrah to that!

Check out this article in the Register to see Matthias deliver his manifesto and read further details.

Given that the party’s aim of “launching a national referendum to obtain a law forbidding PowerPoint during presentations” will only apply in Switzerland (if they win) then a useful supporting action might be to buy, read and inwardly digest a couple of key books:

Presentation Zen: Simple Ideas on Presentation Design and Delivery by Garr Reynolds

slide:ology: The Art and Science of Creating Great Presentations: The Art and Science of Presentation Design by Nancy Duarte

Both of these are available on order from your favourite local independent bookshop.

Update: Presentation Zen is also available from the Hartley Library

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