1 / 36

Accessibility 2.0: Blended Accessibility For Blended Learning

http://www.ukoln.ac.uk/web-focus/events/conferences/blended-learning-mmu-2006-06/. Accessibility 2.0: Blended Accessibility For Blended Learning. About This Talk Brian Kelly reviews the traditional approaches taken to addressing the accessibility of Web resources.

jade-robbins
Download Presentation

Accessibility 2.0: Blended Accessibility For Blended Learning

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. http://www.ukoln.ac.uk/web-focus/events/conferences/blended-learning-mmu-2006-06/http://www.ukoln.ac.uk/web-focus/events/conferences/blended-learning-mmu-2006-06/ Accessibility 2.0: Blended Accessibility For Blended Learning About This Talk Brian Kelly reviews the traditional approaches taken to addressing the accessibility of Web resources. Although a political success, Brian argues that the WAI model is flawed. An alternative approach, developed by UKOLN and TechDis, is described. Brian concludes by arguing for a user-focused approach – “Accessibility 2.0” Brian Kelly UKOLN University of Bath Bath UK Email B.Kelly@ukoln.ac.uk UKOLN is supported by: This work is licensed under a Attribution-NonCommercial-ShareAlike 2.0 licence (but note caveat)

  2. Contents • Background • WAI – The Answer To Universal Web Accessibility? • WAI Limitations • An Alternative Way: A Holistic Approach To E-Learning Accessibility • Building On This Work: The Tangram Metaphor • Accessibility 2.0 • Questions

  3. About Me • Brian Kelly: • UK Web Focus • Adviser on best practices and innovative uses of Web • Funded by JISC and MLA (Museums, Libraries and Archives Council) • Supports Higher and Further Education and cultural heritage communities • Based at UKOLN, University of Bath • Related work: • Providing advice on maximising access to networked resources • Working with JISC’s TechDis advisory service • Co-author of several papers on e-learning accessibility: CJLR paper in 2004, ALT-C and W4A paper in 2005, W4A paper in 2006, …

  4. About You • Are you: • Familiar with WAI (Web Accessibility Initiative)? • Using WAI WCAG guidelines in your: • Web site development? • e-learning development work? • Using the guidelines successfully? • Using any other approaches to e-learning accessibility?

  5. WAI WAI • WAI (Web Accessibility Initiative): • Part of World Wide Web Consortium (W3C) since 1997 • Aims to “develop strategies, guidelines, and resources to help make the Web accessible to people with disabilities” • Developed guidelines for: • Web content: Web Content Accessibility Guidelines (WCAG) • Authoring Tools: Authoring Tools Accessibility Guidelines (ATAG) • User Agents (e.g. browsers): User Agent Accessibility Guidelines (UAAG) • WAI’s work: • Has had high impact • Is being embedded in legislation e.g. US Section 508, UK SENDA, …

  6. Problem Solved? • Is the accessibility of e-learning solved? • We just need to ensure WAI guidelines are implemented • Your views: • We should be ensuring our e-learning resources are universally accessible • Following WAI guidelines can help ensure we achieve this • We have to, or we could be sued Rreview of WAI Approach • But: • Is the WAI model simple or simplistic? (flawed as we can’t do much about browsers and authoring tools) • What about other developments in IT? • Is the WAI approach designed for Web sites relevant for learning services? • Is “universal accessibility” possible – or is it more of a rallying call / an aspiration?

  7. Reviewing WAI • WAI's ambitions are clearly laudable • But does its approach work? • Let's briefly look at: • Experiences of use of WAI • The WAI model • The WCAG guidelines • The context of use • What is accessibility? Rreview of WAI Approach

  8. WCAG Conformance • Page authors can only follow WCAG guidelines. Several surveys carried out using automated tools (which gives upper limit on accessibility) • DRC report: 19% A, 0.6% AA conformance based on 1,000 Web sites • UK Museums report: 42% A, 3% AA conformance based on 124 Web sites • UK Universities surveys (2002, 04): 43%/58% A, 2%/6% AA based on 160+ Web sites Rreview of WAI Approach • Implications • These low conformance levels can indicate: • Public sector organisations don't care • Guidelines are difficult to implement • Guidelines are inappropriate, misleading, wrong, … DRC – Disability Rights Commission, independent body legislated to stop discrimination and promote equality of opportunity of disabled people.

  9. The WAI Model • The WAI model: • Requires all three components to be implemented in order for the WAI vision to be achieved • Is of limited use to end users who have no control over browser or authoring tools developments • Is confusing – many think WCAG is WAI Review of WAI Approach • A simple model developed in late 1990s, but: • Does the evidence suggest it work? • Does it reflect the diversity of Web usage? • Does it reflect real-world technical environment and developments? • Does it reflect real-world political and cultural environments?

  10. WCAG Difficulties • Certain Priority 2 and 3 guidelines cause concerns: • 11.1 Use W3C technologies when they are available and appropriate for a task ... • Promotes own technologies • Appears to ignore major improvements in accessibility of non-W3C formats • 11.1 … and use the latest versions when supported • Goes against project management guidelines • Logical absurdity: when XHTML 1 came out WAI AA HTML 4 compliant sites downgraded to A! • 3.2 Create documents that validate to published formal grammars • Dodgy HTML (<br />) can be rendered by browsers – this is an interoperability issue Rreview of WAI Approach

  11. Universal Accessibility? • Is universal accessibility: • A legitimate aim, which can be achieved with an appropriate set of guidelines? • Possibly a useful political slogan, but not achievable in reality? • Our thinking: • How can scholarly work in HE be accessible to people with learning disabilities? • Underlying approach should be ‘widening participation’ • Universal approaches: • For machine-to-machine communications (XML), and is not suited for the diversity of individuals (e.g. their abilities, environment, cultural environment, requirements, …) Rreview of WAI Approach

  12. WAI Framework For Diversity: Accessibility • Accessibility – the Challenges • WAI WCAG – important area and high visibility • But the model is flawed, fails to take into account developments e.g. can you use Podcasts? Holistic Model • Holistic (Blended)Approach • Holistic approach to e-learning accessibility developed • Accessibility of learning outcomes (not necessarily digital resources) is paramount • WAI WCAG are guidelines • See "Implementing A Holistic Approach To E-Learning Accessibility" prize-winning ALT-C 2005 paper • Follow up paper at W4A 2005 (May 2005) further developed model

  13. External factors: Institutional issues (funds, expertise, policies, security…) Accessibility guidelines should be usable in wider context External factors: Legal issues; cultural factors; … This approach embraces relativism and contextrather than the current absolute approach Accessibility in Context • A framework has been developed which places accessibility & usability within a wider context: • The context • A range of policies • A compliance regime Digital Library Programme Context Purpose Sector Funding Resources Research … Policies Standards Accessibility/Usability Privacy Finance … Compliance External Self-assessment Penalties Learning Broken

  14. Diversity - Content Further Work • WAI guidelines focus on informational Web sites: • Here’s the train timetable – I want the information and I want it now • This is reasonable and desirable • But is this approach always relevant to e-learning: • Here’s something – you must interpret it • Or culture: • Here’s the Mona Lisa – you decide why she is smiling

  15. Argument: • We need: firstly (A) food and then (B) shelter. Afterwards we want (C) soft furnishing • Can apply “Jordan’s Pleasure Principle” to informational content: • We want information, but we also want it provided in a pleasurable way C B A Jordan’s Pleasure Principle Further Work • Even for informational resources, we may not always choose to make information readily accessible • “Super Calli Go Ballistic, Celtic Are Atrocious!” • Breaks draft WCAG 2.0 guidelines on “Content must be understandable” • But brings a smile to many (but not all)

  16. Articulating the Approach • The "Tangram Metaphor" developed to avoid checklist / automated approach: • W3C model has limitations • Jigsaw model implies single solution • Tangram model seeks to avoid such problems Tangram Model • This approach: • Encourages developers to think about a diversity of solutions • Focus on 'pleasure' it provides to user • Outlined at W4A 2006, May 2006

  17. Tangram Model • Model allows us to: • Focuses on end solution rather than individual components • Provided solutions tailored for end user • Doesn't limit scope (can you do better than WAI AAA?) • Make use of automated checking – but ensures emphasis is on user satisfaction Tangram Model • Guidelines/standards for/from: • WAI • Usability • Real world • Organisational • Dyslexic • Learning difficulties • Legal • Management (resources, …) • Interoperability • Accessibility metadata • …

  18. Tangram Model & Testability • "WCAG 2.0 success criteria are written as testable statements …" (nb. automated & human testing ) • Issues: • What about WCAG principles that don't have defined success criteria (e.g. "content must be understandable")? • What about 'baselines' – context only known locally • What about differing models or / definitions of 'accessibility'? • Note vendors of accessibility testing services will market WCAG tools e.g. see posting on BSI PAS 78 • Tangram model can be used within WCAG • Distinguish between testable (ALT tags) and subjective (content understandable) • Supports baselines Tangram Model Testable Baseline 1

  19. The Cathedral & The Bazaar • WAI Approach: • Large-scale and ambitious –but slow-moving • External dependencies (e.g. on legal systems) • Based on single approach ("you must …") • Web-centric approach • Cathedral approach to development • Holistic Approach: • Modular & can be more rapid-moving & responsive • Based on diversity of approaches - "seek to …" • Covers Web, other IT and real-world accessibility • Bazaar approach to development • "I don't claim people should do 100% of what I say“ J Neilson WCAG 2.0’s ‘baseline’ seems to recognise a contextual view  but is limited to Web technologies 

  20. The Legal Framework • This approach is well-suited for the UK legal framework: • SENDA/DDA legislation requires "organisations to take reasonable measures to ensure people with disabilities are not discriminated against unfairly" • Note that the legislation is: • Technologically neutral • Backwards and forwards compatible • Avoids version control complexities • … • The legislation also covers usability, as well as accessibility

  21. Blended Accessibility • Background • Talk on best practices for public library Web sites • Example given of Flash game: • Aimed at children • Simple to develop • They love it • Question: What about accessibility? • Response: (defensive) Err, we'll have to remove it. Blended solution What's the purpose of the game? To amuse kids, while parents are browsing for books. Would building blocks provide an equivalent alternative? Note this treats kids as users with different learning styles, not as 'something for the blind, …

  22. Accessibility 2.0 • Can the term “Accessibility 2.0” help in articulating a blended approach (similar to Web 2.0, e-Learning 2.0, Library 2.0, …)? • Characteristics: • User-focus • Diversity • Blended • Widening participation • Avoidance of dogma • … Accessibility 2.0

  23. Are You A Believer? (1) • You want to make your PowerPoint slides available in your VLE. Do you: A Acknowledge that you can’t as PPT is a proprietary format and so breaks WCAG 1.0 B Think about making PPT and HTML versions available, but realise that MS HTML is invalid, and so this breaks WCAG C Make PPT (and HTML) versions available as this is more accessible than having no file available D Ensure images in PTT file have ALT tags – as PPT files can be accessible Accessibility 2.0

  24. Are You A Believer? (2) • You want to make your PowerPoint presentations more accessible. Do you: A Make use of Eric Meyer’s S5 software, as this is compliant with XHTML, makes use of CSS and is fashionable amongst the Web development community (and isn’t produced by Microsoft) B Realise that S5 (a) produces poor quality printouts (which your student use for note-taking) and (b) is difficult to produce visual effects which you use to make your presentations more interesting Accessibility 2.0

  25. Are You A Believer? (3) • You want to make a recording of a paper on "Contextual Web Accessibility - Maximizing the Benefit of Accessibility Guidelines" you gave at the W4A 2006 workshop available as Podcasts. Do you: A Acknowledge that you can’t as you don’t have the resources available to provide transcripts of your talks available, as required to conform with WCAG B Create the Podcast as a recording of your talks makes the talk more accessible than having no recording available C Provide the Podcast alongside the MS Word, PDF and XHTML versions of the paper and the PowerPoint slides, which provide variants of the real world idea (as opposed to the resources) Accessibility 2.0 Accessibility 2.0 for Web 2.0

  26. Are You A Believer? (4) • You have a PC cluster with multimedia PCs. It is pointed out that deaf students can’t benefit from this. Do you: A Remove the multimedia PCs in order to provide a level playing field? B Ensure that captioning tools are available in order to allow students with hearing difficulties can still access the learning resources? Accessibility 2.0

  27. Are You A Believer? (5) • You are organising a Geology field trip to Snowdonia. However it is pointed out that Snowdonia is not wheelchair friendly. Do you: • Cancel the field trip as it is not universally accessible? • Call for a wheelchair ramp to be installed and boycott Wales until this happens? • Seek to ensure that the learning outcomes of the field trip are accessible and make use of alternative technologies e.g. mobile phones/MMS/3G to allow student at base camp to engage in discussions and go to wheelchair-friendly pub for social activities? Accessibility 2.0

  28. Are You A Believer? (6) • You have deployed Blogs for students to reflect on their learning experiences • On reviewing the Blogs you discover that your students aren't using ALT tags or images or expanding abbreviations, in breach of WCAG • Do you: • Withdraw the Blogging service? • Point out issues, but leave it to students to decide what to do? Accessibility 2.0 Accessibility 2.0 for Web 2.0

  29. Application To Communications • Skype, Instant Messaging, … • Banned at some institutions for various reasons (ideological, performance, accessibility, …) • But: • Can be used to allow geographically-challenged students to listen to talks • Use in lectures when no induction loop available • Skype IM / IM can be used for mentoring support, feedback, … Accessibility 2.0 Accessibility barrier or accessibility benefit?

  30. Challenges For Accessibility 2.0 • Moving away from a simplistic checklist approach has benefits: • Ability to address the diversity to be found • Ability to do more than may be required in checklist • But also leads to challenges: • What are the appropriate ‘reasonable measures’? • How do I advise / evaluate / monitor? • No simple answers (as with evaluation of learning) but some suggestions: • Documented policies are essentially • Sharing and discussion of approaches taken • Talking to your users! Accessibility 2.0

  31. Building On This Work Next Steps • TechDis Perspective "As .. awareness of accessibility has matured .. shift in e-learning communities from a standards based paradigm to a more holistic approach that discriminates between delivery mechanisms, content and context – … approach focuses more on the learner’s experience than the intrinsic nature of the resource, and … brings responsibility for accessibility to a wider audience." • Other points: • Discrimination by compliance; real world resources are less accessible than digital ones – don't ban digital resources needlessly • Need to distinguish between: • Content delivery vehicle • Context of use

  32. Accessibility & Usability Next Steps • Possible (probable) danger: • We must address accessibility (legal fears) • We follow WCAG guidelines • We run automated tools • We feel happy – and stop there • But: • Our Web sites & e-learning systems aren't usable • We'd failed to give enough attention to usability • Note: • SENDA legislation covers access and use of digital resources. • .."relationship between accessibility & usability has long been a source of discussion, .. no definitive model exists." • Further work needed – but usability needs to be addressed

  33. Personalisation Next Steps • Traditional view: • Digital resources must all be fully accessible • People with disabilities have rights to access all resources • Personalising views based on (disabled) user profiles is therefore wrong • Current thinking: • Digital resources can't be fully accessible • Personalisation (e.g. PLEs) is felt to be valuable • Disabled users have equals rights in avoiding unnecessary information! • Standards are being developed for support personalised access to (e-)learning resources, including IMS AccessForAll

  34. Next Steps Next Steps • What next? • Is there a broad acceptance of the approaches described? • Dealing with the backlash – we want a simple set of rules we can implement • A roadmap for the future: • Sharing experiences • Observing patterns of best practices – and (importantly) mistakes • Engagement with others • Further development of the approach

  35. Conclusions • Web accessibility: • Should be a goal • But accessibility is a more important goal • Blended accessibility has strong parallels with blended learning – the focus is on the learning

  36. Questions • Any questions? Note resources cited are bookmarked in del.icio.us using tag 'blended-learning-mmu-2006'

More Related