E-Learning Accessibility: March
14th, 2003
By Paul Stacey
Access has long been touted as a major benefit
of e-learning. But is it really accessible to all?
Canada,
like many countries, believes Information and Communication Technologies (ICT's)
are essential for the country's social and economic development. In a move
toward ubiquitous technology access, Canada was the first nation in the world to
link all its schools and libraries to the Internet. But is there a gulf between
technology haves and have-nots creating a digital divide? Should every person
have a network enabled device?
Schools
and libraries are not the only locales for technology access. One fascinating UK
initiative to increase access was the University for Industry sponsored
construction of an ICT learning centre in Sunderland Football Club's
"Stadium of Light" a new soccer field built in the 90's.
The
United States has also been addressing accessibility concerns through public
policy.
In
2001 the US enacted the No Child Left Behind Act. This law outlines Bush's plans
for education reform and makes significant changes to the Elementary and
Secondary Education Act. Particularly pertinent for accessibility is the
requirement for state and district reports to show achievement gaps between
students who are economically disadvantaged, from racial and ethnic minority
groups, have disabilities, or have limited English proficiency. This information
will be used to help close the achievement gap between students of different
groups and make sure that no child is left behind. See http://www.nochildleftbehind.gov
for more.
Another
aspect of accessibility focuses on ensuring those with disabilities are not
excluded or disadvantaged. How accessible is e-learning to someone who has
arthritis or is a quadriplegic?
Is
e-learning accessible to people with vision, hearing, physical capacity, and
cognitive skill disabilities?
The
US Congress amended the Rehabilitation Act to require Federal agencies to make
their electronic and information technology accessible to people with
disabilities. Section 508 was enacted to eliminate barriers in information
technology, to make available new opportunities for people with disabilities,
and to encourage development of technologies that will help achieve these goals.
See http://www.section508.gov
for more.
But
public policy can only go so far. Accessibility needs to be designed in from the
start. Lets take a look at some of the ways technology and e-learning are being
designed to enable accessibility.
In
the technology itself "accessibility" is facilitated through hardware
and software (the operating system and in software applications).
Hardware
Access
to a computer is the first hurdle to accessibility. While this minimum
requirement can be met through public Internet cafe's, schools, and libraries
the optimum experience is attained by having your own personal computer. In this
context affordability is a barrier to accessibility. For low income earners the
expense of a computer can be out of reach.
Computer
hardware comes in different configurations. Computers with more RAM, faster
processors, larger hard disks, and other media enabling capabilities tend to be
better for e-learning. They provide access to more media rich and interactive
experiences than minimally configured computers.
Just
as faster is better for a computer, faster is better on the network. There are
differing qualities of experience based on bandwidth. Those with only dial-up
will not have access to the same range of rich features available with ADSL or
cable.
In
addition to these off-the-shelf hardware considerations an increasing variety of
"assistive technologies" are being developed to meet the ICT
accessibility needs of those with vision, hearing, physical capacity, and
cognitive skill disabilities.
Assistive
hardware technologies include:
-
alternative keyboards
-
alternative mouse systems
-
Braille computer displays
-
Braille embossers & printers
-
screen magnifiers
-
screen readers
-
electronic aids to daily living
-
speech synthesizers
-
haptic devices
An
excellent overview of different hardware assistive technology options including
a description and considerations of each can be found at: http://snow.utoronto.ca/technology/products/
Operating
Systems
Human
Computer Interface designers have customized popular operating systems to
provide user definable "Accessibility" settings.
The
Windows and Macintosh operating systems have special Accessibility options such
as:
-
generating
visual warnings when the computer makes a sound
-
captioning
speech and sounds
-
adjusting
the display to use colours and fonts designed for easy reading
-
controlling
the mouse pointer using numeric keys on the keyboard
These
features make computer use more possible by those who have special visual,
audio, or physical needs.
While
faster is better in general (as noted in the hardware section), accessibility
brings an interesting twist. For those with physical limitations the speed at
which a computer does things can in fact be a problem.
Operating
system interface features or interactions that are based on timing of events
should be customizable by the user.
Software
Applications
The
World Wide Web Consortium and IMS
have both created a set of Accessibility guidelines. To access the guidelines
yourself check out Web
Content Accessibility Guidelines 1.0, a World Wide Web Consortium
Recommendation 5-May-1999 and IMS
Guidelines for Developing Accessible Learning Applications Version 1.0, a
white paper produced by IMS 27-Jun-2002.
I've
extracted and interpreted a few accessibility guidelines from them both. They
provide a range of considerations in terms of e-learning accessibility:
-
Allow
for customization based on user preference. Display elements should be
customizable - including font, font style, font colour, font size, cursor
size, screen layout, and background.
-
Ensure
text and graphics are understandable when viewed without colour.
-
Provide
equivalent access to auditory and visual content based on user preference.
To make e-learning accessible to those with hearing impairments developers
can caption and provide a text transcription of auditory content. For blind
or visually impaired users text and audio descriptions of visual content
should be provided..
-
Provide
context and orientation information. Indications of size, a consistent
layout, grouping elements and providing contextual information about
relationships all enhance accessibility.
-
Provide
clear navigation mechanisms including such things as site maps and
consistent navigation bars
-
Make
things keyboard accessible. Manipulation of things like menus and dialog
boxes should be possible from the keyboard. .
A
whole range of software assistive technologies have been developed to enhance
accessibility including:
An
excellent overview of different software assistive technology options including
a description and considerations of each can be found at: http://snow.utoronto.ca/technology/products/
Canada
continues to pursue e-learning Accessibility goals through initiatives like:
-
The Barrier Free Learning Environment http://barrierfree.ca
-
The Inclusive Learning Exchange http://barrierfree.ca/tile
Conclusion
The
impetus to ensure accessibility comes not just from e-learning, but from
e-government, e-commerce, and other forms of the e-connected world. How will
this push for connection be met through public policy?
Ensuring
accessibility is a technical challenge for those developing learning objects,
courses, and other forms of e-learning content. What must a developer do to
ensure their content accessible?
Accessibility
needs its own technology stack like web services. From a developers perspective
the question is: What gets handled at the hardware level, the operating system
level, within software applications, or as a mini-applet in the content itself?
What can I depend on being there and what must I add?
I
look forward to the advance of accessibility. I expect the changes accessibility
brings will benefit the ICT use of all.
Paul Stacey, is an e-learning
specialist in corporate and higher education working in Simon
Fraser University's eLearning Innovation Centre (eLINC). A frequent
e-learning speaker and workshop leader Paul produces active and alive learning
as part of LearningTimes
a free online community for education professionals. Contact:
Paul Stacey
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