Computer assisted learning (CAL) is increasingly popular.
CAL has many advantages in learning and teaching
because it allows greater flexibility in learning content,
time and environment (Parette et al. 2000; Rettberg and
Bobda 2005; Sidhu 2010; Vernadakis et al. 2005). A
greater range and more up-to-date learning materials can be
provided to meet the diverse needs of students. In recent
years, various types and levels of CAL facilities have been
developed for different educational needs and environments.
By applying rapid advancements in science and
technology, CAL is claimed to be more powerful for
facilitating human–computer interaction and knowledge
transfer (McKay 2007; Wang et al. 2010). It also promises
to benefit a wider range of learners with different backgrounds,
cognitive levels and learning capabilities (Parette
et al. 2010; Skouge et al. 2007; Wang et al. 2010).
However, people with visual impairment still face more
difficulties in CAL than other people because most of the
current CAL facilities are not visually impaired friendly
(Burger et al. 1994; Klaus 1994). Personal CAL facilities
for people with visual impairment are also not popular due
to the high price of special features and the need to continuously
update the facilities. Most people with visual
impairment can only access CAL facilities that are available
in public places, such as those provided by schools,
libraries and community centers. A case study was carried
out in Hong Kong to review the design of public CAL
facilities for people with visual impairment. One of the key
findings was that children with visual impairment face
more barriers than others when using public CAL facilities.
For example, they find it difficult to manage the common
computer input and output devices. This paper identifies
the deficiencies in existing designs. By applying the
Computer assisted learning (CAL) is increasingly popular.
CAL has many advantages in learning and teaching
because it allows greater flexibility in learning content,
time and environment (Parette et al. 2000; Rettberg and
Bobda 2005; Sidhu 2010; Vernadakis et al. 2005). A
greater range and more up-to-date learning materials can be
provided to meet the diverse needs of students. In recent
years, various types and levels of CAL facilities have been
developed for different educational needs and environments.
By applying rapid advancements in science and
technology, CAL is claimed to be more powerful for
facilitating human–computer interaction and knowledge
transfer (McKay 2007; Wang et al. 2010). It also promises
to benefit a wider range of learners with different backgrounds,
cognitive levels and learning capabilities (Parette
et al. 2010; Skouge et al. 2007; Wang et al. 2010).
However, people with visual impairment still face more
difficulties in CAL than other people because most of the
current CAL facilities are not visually impaired friendly
(Burger et al. 1994; Klaus 1994). Personal CAL facilities
for people with visual impairment are also not popular due
to the high price of special features and the need to continuously
update the facilities. Most people with visual
impairment can only access CAL facilities that are available
in public places, such as those provided by schools,
libraries and community centers. A case study was carried
out in Hong Kong to review the design of public CAL
facilities for people with visual impairment. One of the key
findings was that children with visual impairment face
more barriers than others when using public CAL facilities.
For example, they find it difficult to manage the common
computer input and output devices. This paper identifies
the deficiencies in existing designs. By applying the
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