- is the term in JACS3?
- is there evidence of use of the term in HESA data returns?
- is the term’s definition and scope sufficiently clear and comprehensive to allow classification?
- is the term reliably distinguishable from other terms?
During last week’s CETIS conference I ran a session to assess how ebooks can function as an educational medium beyond the paper textbook.
After reminding ourselves that etextbooks are not yet as widespread as ebook novels, and that paper books generally are still most widely read, we examined what ebook features make a good educational experience.
Though many features could have been mentioned, the majority were still about the experience itself. Top of the bill: formative assessment at the end of a chapter. Either online or offline, it needs to be interactive, and there need to be a lot of items readily available. Other notable features in the area include a desire for contextualised discussion about a text. Global is good, but chats limited to other learners in a course is better. A way of asking for clarification of a teacher by highlighting text was another notable request.
Knowing how to procure your IT services, software and hardware is a vital function in any organisation. Assessing one’s maturity in this aspect can be complex, which is why SURF developed a simpler approach.
There are a number of perspectives to take on IT and its place in an organisation, but for further and higher education institutions, the procurement or sourcing of services – in the widest sense of the word ‘services’ – may be among the most important ones. With the ongoing move to cloud provisioning, determining where a particular service is going to come from and how it is managed is crucial.
During last week’s EDUPUB workshop, I presented a demo of how an IMS QTI 2.1 question item could be embedded in an EPUB3 e-book in a way that is engaging, but also works across many e-book readers. Here’s the why and how.
One of the most immediately obvious differences between a regular book and an e-textbook is the inclusion of little quizzes at the end of a chapter that allow the learner to check their understanding of what they’ve just learned. Formative assessment matters in textbooks.
With the QTI 2.1 specification finalised and released, we’re seeing significant global investment in tools that implement the spec. Tools developed by JISC projects have been central.
It has taken a while, but since March this year, IMS Question and Test Interoperability 2.1 has been released as a final specification. That means that people can implement it, secure in the knowledge that it won’t change or disappear, even if there are likely to be future versions.
The release, not coincidentally, happens at a time when there is a lot of activity regarding the use of the specification around the world. This level of investment isn’t just due to a set of documents on a website, it is also due to the fact that there is a range of working implementations available that demonstrate how QTI 2.1 works, and that’s where a couple of Jisc projects play a crucial role. But let’s have a look at what people are doing with the spec around the world first.
The biggest assessment project in the low lands at the moment is the effort to move all online school exams to the QTI 2.1 format. The multi-million Euro effort is led by the Commissie voor Examens, managed by DUO, with the CITO exam body and trifork as contractors. Because of the specific demands put upon the whole infrastructure, the partners will need an extensive profile.
Accompanying the formal exam profile is the NL-QTI effort led by Kennisnet. This pragmatic but relatively rich profile of the specification is meant to facilitate an eco system of material and software for general use in schools. We should see more of that profile in the near future.
Lastly, Surf is currently running the Assessment and Assessment Driven Learning programme in higher education, which will revolve around a sharable infrastructure for online assessment. Part of that programme will be an exploration to what extent such sharing can be facilitated by QTI 2.1
The main player here is the Onyx suite from BPS. This complete assessment suite of editor, test player, analytics module and converter is built around QTI 2.1, and has been used standalone as well as integrated with the OLAT VLE. One instance of the latter that is shared between all 13 universities in Saxony has about 50.000 users, with about 25.000 log-ins per day. Similar consortia exist in Thuringia and Rhineland-Palatinate, and there are further university specific installations with a combined total of about a 108.000 users. The hosted Onyx test player runs about 300 – 1000 test runs a day.
The work in France is on a smaller scale, but is mature and well targeted. The MOCAH team of UPMC, Paris 6 has developed a system where QTI 2.1 source is transformed such that it can be run on generic Java or PHP based web servers, as well as specialised QTI players. The focus is on the teaching of math to secondary schools students, and it has been used in 160 classes, where 400 patterns have been created. The latter are question item templates that generate large amounts of items for students to practice on; a key requirement.
After experiments in the past with, among other tools, QTI 2.1 generated from common word-processing tools, KERIS – the Korea Education and Research Information Service – is now engaging vendors in a project to integrate QTI 2.1 in EPUB 3 ebooks. Various options are being explored at the moment, with results due later this year.
This is where the development-at-scale is taking place at the moment, thanks to the Race To The Top (RTTT) projects that were funded by the Obama administration. There are two state-led consortia – Smarter Balanced and PARCC – with a mission to overhaul the whole assessment infrastructure in schools, base it on open standards and open source software, and provide a tranche of new material to go with it. They had an initial budget of $160-170 million each, with about a third of those budgets intended for tool development. QTI 2.1, along with the Accessible Portable Item Protocol (APIP) extensions, is at the heart of the initiative.
The size of those consortia is having effects elsewhere too. One major educational publisher has already decided to standardise internally on QTI 2.1, and others are looking at the same option. Not that such a thing is new: organisations such as the Northwest Evaluation Association (NWEA) and the world’s largest testing organisation – ETS – have already chosen QTI 2.1 as their internal ‘lingua franca’. Rather than make many point to point integrations between their own systems and collections, and then having to do that again with each organisation they partner with, they translate each format to and from QTI.
Meanwhile, back in the UK, JISC has sponsored a small community – most recently via the Assessment & Feedback programme – that has played a vital role in making QTI 2.1 real. ‘Real’ in the sense of checking whether and how the specification would work, as it was being designed, in the case of Jassess. ‘Real’ also in the sense of putting QTI 2.1 material in the hands of a range of teachers and learners, via editing tools such as Uniqurate and playback tools such as QTIWorks. An excellent RSC Scotland post outlines exactly how those outputs of the QTI-DI and Uniqurate projects work.
All of these UK projects’ tools, guidance and assessment materials are known to all the above communities, as well as plenty of others I’ve not even mentioned. In some cases, the JISC sponsored tools have been extended by others, in other cases, the presence and online accessibility of the resources meant that those other communities knew what was possible, what their own tools and materials should look like, and how they could interoperate.
At this point, it’s not clear whether new Jisc will support future work in this area. What is clear, however, is that JISC’s past investment will continue to have a global effect well beyond the initial outlay.
Last weekend, a motley crew of designers, students, developers, business and government people came together in Edinburgh to prototype designs and apps to help learners manage their journeys. With help, I built a prototype that showed how curriculum and course offering data can be combined with e-portfolios to help learners find their way.
The first official Scottish government data jam, facilitated by Snook and supported by TechCube, is part of a wider project to help people navigate the various education and employment options in life, particularly post 16. The jam was meant to provide a way to quickly prototype a wide range of ideas around the learner journey theme.
While many other teams at the jam built things like a prototype social network, or great visualisations to help guide learners through their options, we decided to use the data that was provided to help see what an infrastructure could look like that supported the apps the others were building.
In a nutshell, I wanted to see whether a mash-up of open data in open standard formats could help answer questions like:
- Where is the learner in their journey?
- Where can we suggest they go next?
- What can help them get there?
- Who can help or inspire them?
Here’s a slide deck that outlines the results. For those interested in the nuts and bolts read on to learn more about how we got there.
Where is the learner?
To show how you can map where someone is on their learning journey, I made up an e-portfolio. Following an excellent suggestion by Lizzy Brotherstone of the Scottish Government, I nicked a story about ‘Ryan’ from an Education Scotland website on learner journeys. I recorded his journey in a Mahara e-portfolio, because it outputs data in the standard LEAP2a format- I could have used PebblePad as well for the same reason.
I then transformed the LEAP2a XML into very rough but usable RDF using a basic stylesheet I made earlier. Why RDF? Because it makes it easy for me to mash up the portfolios with other datasets; other data formats would also work. The made-up curriculum identifiers were added manually to the RDF, but could easily have been taken from the LEAP2a XML with a bit more time.
Where can we suggest they go next?
I expected that the Curriculum for Excellence would provide the basic structure to guide Ryan from his school qualifications to a college course. Not so, or at least, not entirely. The Scottish Qualifications Framework gives a good idea of how courses relate in terms of levels (i.e. from basic to a PhD and everything in between), but there’s little to join subjects. After a day of head scratching, I decided to match courses to Ryan’s qualifications by level and comparing the text of titles. We ought to be able to do better than that!
The course data set was provided to us was a mixture of course descriptions from the Scottish Qualifications Authority, and actual running courses offered by Scottish colleges all in one CSV file. During the jam, Devon Walshe of TechCube made a very comprehensive data set of all courses that you should check out, but too late for me. I had a brief look at using XCRI feeds like the ones from Adam Smith college too, but went with the original CSV in the end. I tried using LOD Refine to convert the CSV to RDF, but it got stuck on editing the RDF harness for some reason. Fortunately, the main OpenRefine version of the same tool worked its usual magic, and four made-up SQA URIs later, we were in business.
This query takes the email of Ryan as a unique identifier, then finds his qualification subjects and level. That’s compared to all courses from the data jam course data set, and whittled down to those courses that match Ryan’s qualifications and are above the level he already has.
The result: too many hits, including ones that are in subjects that he’s unlikely to be interested in.
So let’s throw in his interests as well. Result: two courses that are ideal for Ryan’s skills, but are a little above his level. So we find out all the sensible courses that can take him to his goal.
What can help them get there?
One other quirk about the curriculum for excellence appears to be that there are subject taxonomies, but they differ per level. Intralect implemented a very nice one that can be used to tag resources up to level 3 (we think). So Intralect’s Janek exported the vocabulary in two CSV files, which I imported in my triple store. He then built a little web service in a few hours that takes the outcome of this query, and returns a list of all relevant resources in the Intralibrary digital repository for stuff that Ryan has already learned, but may want to revisit.
Who can help or inspire them?
It’s always easier to have someone along for the journey, or to ask someone who’s been before you. That’s why I made a second e-portfolio for Paula. Paula is a year older than Ryan, is from a different, but nearby school, and has done the same qualifications. She’s picked the same qualification as a goal that we suggested to Ryan, and has entered it as a goal on her e-portfolio. Ryan can get it touch with her over email.
This query takes the course suggested to Ryan, and matches it someone else’s stated academic goal, and reports on what she’s done, what school she’s from, and her contact details.
For those parts of the Curriculum for Excellence for which experiences and outcomes have been defined, it’d be very easy to be very precise about progression, future options, and what resources would be particularly helpful for a particular learner at a particular part of the journey. For the crucial post 16 years, this is not really possible in the same way right now, though it’s arguable that its all the more important to have solid guidance at that stage.
Some judicious information architecture would make a lot more possible without necessarily changing the syllabus across the board. Just a model that connects subject areas across the levels, and school and college tracks would make more robust learner journey guidance possible. Statements that clarify which course is an absolute pre-requisite for another, and which are suggested as likely or preferable would make it better still.
We have the beginnings of a map for learner journeys, but we’re not there yet.
Other than that, I think agreed identifiers and data formats for curriculum parts, electronic portfolios or transcripts and course offerings can enable a whole range of powerful apps of the type that others at the data jam built, and more. Thanks to standards, we can do that without having to rely on a single source of truth or a massive system that is a single point of failure.
Find out all about the other great hacks on the learner journey data jam website.
All the data and bits of code I used are available on github
With most software development project in the JISC Assessment & Feedback programme drawing to a close, it’s a good time to look at some common themes in their findings.
There’s a small, but perfectly formed little cluster of four projects in ‘strand C’ of the Assessment & Feedback programme. Strand C is the techy corner, because it is these that projects that took existing open source tools and adapted them for use in organisations beyond the ones they were developed in.
Within the strand, the tools that were being developed were:
- Rogō, a complete assessment authoring, playback and management system, developed by the eponymous project at Nottingham University, and deployed in three other institutions
- OpenMentor, a system that analyses tutor feedback on assignments, developed at the OU, now deployed in two other institutions by the OMTetra project
- QTIWorks, a full-featured, QTI compliant assessment and test player, developed at Edinburgh University, now deployed by the QTI-DI project
- Uniqurate, an online, QTI compliant assessment and test authoring tool developed at Kingston University by the eponymous project, and coupled to QTIWorks
Looking through their development experiences, there’s a couple of themes that seem to recur:
User interface complexity
What to do when one set of users need something simple, and another set want full access to all functions? The clearest example of that dillema was presented to the Uniqurate project: there was an existing assessment item editor called mathqurate that gave access to all aspects of many different question types, but was only really usable by experts, and an earlier version of uniqurate that was very friendly, but also very limited. Which is why the current project aimed to become the “goldilocks editor” by offering a flexible but easily graspable set of item type modules, but also by offering different modes that are accessible to more intrepid users.
The most advanced of these modes gives the user access to the QTI source code of a question, which is something that is also available in QTIWorks. Another, arguably more important simple versus complex user interface issue that QTIWorks has to deal with is how to show runtime variables. For authors, this is vital, but for candidates it is rather confusing and often assessment defeating. Solution? Like Uniqurate: different modes for different audiences.
In OpenMentor, the audience is broadly the same – tutors –, but some wanted to know what’s going on in the ‘black box’ that takes their feedback on assignments and categorises it into a well-known taxonomy, while others where just happy with the results. The likely solution is also to include an advanced mode in a future version of the tool.
Interoperating with other systems
Or: how do I get user information in my tool without asking those users to type it all in?
OpenMentor and Rogō went down the LDAP route, given that it is the most common way to distribute person information inside organisations. It worked for these tools too, though Rogō had to spend quite some time at one of the new sites to adapt the LDAP to Rogō mapping. Some assembly may be required, in other words.
Rogō and QTIWorks also implemented the much newer IMS Learning Technology Interoperability (LTI) specification. This specification is designed to allow more ad hoc connections between a VLE and tools such as the tools from the assessment & feedback programme. LTI is intended primarily to identify users, but it can also be used to move some user information from one system to another, particularly when those systems may be in different organisations. This function is still evolving, though, as Rogō found when they looked for an external examiner role within LTI. They couldn’t find it when they implemented it, but LTI supports it now.
Fostering a community
Because all four projects are open source, and because they were all meant to facilitate wider adoption, community building with users and other developers was paramount. It’s not easy, though.
Uniqurate noticed this particularly with regard to the use of agile software methodologies, as outlined in their last blogpost. Agile is generally advocated because it makes sure development happens in small steps that track what users actually want. Except that the users in this case where very busy academics who were enthusiastic, but rarely available during term time. And a project is too short to easily work around that. Conclusion: sometimes other methodologies may work better.
The OMtetra project used workshops and surveys to engage their user community, which did work. Developer engagement might be a slightly different matter, however: there are three different public code repositories for OpenMentor, of different degrees of currency. The branch developed during this project is the slightly, rather than the very, stale one. Whether all the developments have made it through to the latest branch is not clear. It is still actively developed, however, and that’s the main thing.
For QTIworks, code and documentation is clearer, and with success: the code has been adopted by developers on one of the very large Race To The Top assessment projects in the United States. It has been used there to prototype some potentially revolutionary new functionality in interoperable assessment material, which is likely to become part of the QTI specification itself. Part of the success may also be due to the fact that, like Uniqurate, a demo version of QTIworks is available online.
Both QTIworks and Uniqurate, have, however, been used for teaching and learning in a relatively limited scale compared to Rogō. As the Rogō project discovered, that can be a mixed blessing. Once courses start to rely on a system, the demand for support of all kinds increases exponentially- and that’s before Rogō is being used widely for summative assessment. Sound user and installation documentation helps, but doesn’t resolve all issues that other organisations may need help with, whether there’s a support business model in place or not. Also, demands of other organisations inevitably lead to tensions with the priorities of the original developers. That’s manageable, but requires thought and ongoing commitment.
It is a bit difficult to generalise across these four projects, much less all open source software developments at universities. Yet it seems fairly clear that the main issue is community building: once the right number of the right mix of partners are on board, other issues become more tractable. Fostering such communities is difficult, but it is something that an organisation like OSSWatch can help with; as Rogō has already been doing.
Like most places, the University of Bolton keeps its data in many stores. That’s inevitable with multiple systems, but it makes getting a complete picture of courses and students difficult. We test an approach that promises to integrate all this data, and some more, quickly and cheaply.
Integrating a load of data in a specialised tool or data warehouse is not new, and many institutions have been using them for a while. What Bolton is trying in its JISC sponsored course data project is to see whether such a warehouse can be built out of Linked Data components. Using such tools promises three major advantages over existing data warehouse technology:
It expects data to be messy, and it expects it to change. As a consequence, adding new data sources, or coping with changes in data sources, or generating new reports or queries should not be a big deal. There are no schemas to break, so no major re-engineering required.
It is built on the same technology as the emergent web of data. Which means that increasing numbers of datasets – particularly from the UK government – should be easily thrown into the mix to answer bigger questions, and public excerpts from Bolton’s data should be easy to contribute back.
It is standards based. At every step from extracting the data, transforming it and loading it to querying, analysing and visualising it, there’s a choice of open and closed source tools. If one turns out not to be up to the job, we should be able to slot another in.
But we did spend a day kicking the tires, and making some initial choices. Since the project is just to pilot a Linked Enterprise Data (LED) approach, we’ve limited ourselves to evaluate just open source tools. We know there plenty of good closed source options in any of the following areas, but we’re going to test the whole approach before deciding on committing to license fees.
Refine is Google’s power tool for anyone who has to deal with malformed data, or who just wants to transform or excerpt from format to another. It takes in CSV or output from a range of APIs, and puts it in table form. In that table form, you can perform a wide range of transformations on the data, and then export in a range of formats. The plug-in from DERI Galway, allows you to specify exactly how the RDF – the linked data format, and heart of the approach – should look when exported.
What Refine doesn’t really do (yet?) is transform data automatically, as a piece of middleware. All your operations are saved as a script that can be re-applied, but it won’t re-apply the operations entirely automagically. D2RQ does do that, and works more like middleware.
Although I’ve known D2RQ for a couple of years, it still looks like magic to me: you download, unzip it, tell it where your common or garden relational database is, and what username and password it can use to get in. It’ll go off, inspect the contents of the database, and come back with a mapping of the contents to RDF. Then start the server that comes with it, and the relational database can be browsed and queried like any other Linked Data source.
Since practically all relevant data in Bolton are in a range of relational databases, we’re expecting to use D2R to create RDF data dumps that will be imported into the data warehouse via a script. For a quick start, though, we’ve already made some transforms with Refine. We might also use scripts such as Oxford’s XCRI XML to RDF transform.
Storage, querying and visualisation
We expected to pick different tools for each of these functions, but ended up choosing one, that does it all- after a fashion. Callimachus is designed specifically for rapid development of LED applications, and the standard download includes a version of the Sesame triplestore (or RDF database) for storage. Other triple stores can also be used with Callimachus, but Sesame was on the list anyway, so we’ll see how far that takes us.
Callimachus itself is more of a web application on top that allows quick visualisations of data excerpts- be they straight records of one dataset or a collection of data about one thing from multiple sets. The queries that power the Callimachus visualisations have limitations – compared to the full power of SPARQL, the linked data query language – but are good enough to knock up some pages quickly. For the more involved visualisations, Callimachus SPARQL 1.1 implementation allows the results a query to be put out as common or garden JSON, for which many different tools exist.
We’ve made some templates already that pull together course information from a variety of sources, on which I’ll report later. While that’s going on, the main other task will be to set up the processes of extracting data from the relational databases using D2R, and then loading it into Callimachus using timed scripts.
Unthinkable a couple of years ago, and it still feels a bit April 1st: Blackboard has taken over the Moodlerooms and NetSpot Moodle support companies in the US and Australia. Arguably as important is that they have also taken on Sakai and IMS luminary Charles Severance to head up Sakai development within Blackboard’s new Open Source Services department. The life of the Angel VLE Blackboard acquired a while ago has also been extended.
For those of us who saw Blackboard’s aggressive acquisition of commercial competitors WebCT and Angel, and seen the patent litigation they unleashed against Desire 2 Learn, the idea of Blackboard pledging to be a good open source citizen may seem a bit … unsettling, if not 1984ish.
But it has been clear for a while that Blackboard’s old strategy of ‘owning the market’ just wasn’t going to work. Whatever the unique features are that Blackboard has over Moodle and Sakai, they aren’t enough to convince every institution to pay for the license. Choosing between VLEs was largely about price and service, not functionality. Even for those institutions where price and service were not an issue, many departments had sometimes not entirely functional reasons for sticking with one or another VLE that wasn’t Blackboard.
In other words, the VLE had become a commodity. Everyone needs one, and they are fairly predictable in their functionality, and there is not that much between them, much as I’ve outlined in the past.
So it seems Blackboard have wisely decided to switch focus from charging for IP to becoming a provider of learning tool services. As Blackboard’s George Kroner noted, “It does kinda feel like @Blackboard is becoming a services company a la IBM under Gerstner”
And just as IBM has become quite a champion of Open Source Software, there is no reason to believe that Blackboard will be any different. Even if only because the projects will not go away, whatever they do to the support companies they have just taken over. Besides, ‘open’ matters to the education sector.
Blackboard had already abandoned extreme lock-in by investing quite a bit in open interoperability standards, mostly through the IMS specifications. That is, users of the latest versions of Blackboard can get their data, content and external tool connections out more easily than in the past- it’s no longer as much of a reason to stick with them.
Providing services across the vast majority of VLEs (outside of continental Europe at least) means that Blackboard has even more of an incentive to make interoperability work across them all. Dr Chuck Severance’s appointment also strongly hints at that.
This might need a bit of watching. Even though the very different codebases, and a vested interest in openness, means that Blackboard sponsored interoperability solutions – whether arrived at through IMS or not – are likely to be applicable to other tools, this is not guaranteed. There might be a temptation to cut corners to make things work quickly between just Blackboard Learn, Angel, Moodle 1.9/2.x and Sakai 2.x.
On the other hand, the more pressing interoperability problems are not so much between the commodified VLEs anymore, they are between VLEs and external learning tools and administrative systems. And making that work may just have become much easier.