A MULTISENSORY MULTIMEDIA MODEL TO SUPPORT
DYSLEXIC CHILDREN IN LEARNING
Manjit Singh Sidhu and Eze Manzura
Dept. of Graphics and Multimedia, College of IT, University Tenaga Nasional, Kajang, Selangor, Malaysia
Keywords: Multimedia, Dyslexic, Multisensory, Education.
Abstract: Multimedia has benefited many areas in education and users including disable ones. In this paper we
proposed a new courseware development model specifically for dyslexic children. The model could be used
for developing courwares for dyslexic children. Five essential features are identified to support this model
namely interaction, activities, background colour customization, directional for text reading (left-right)
identification and detail instructions. A prototype courseware was developed and tested with a small sample
size of dyslexic children (selected schools in Malaysia) based on the proposed model. The evaluation
showed positive results in terms of performance whereby 60% of the users showed better improvement in
their performance, 30% unchanged result and 10% with decrement in performance.
1 INTRODUCTION
Dyslexia is associated with difficulty or problem
with words specifically in reading, spelling and
expressing thoughts on paper (Greene, 2006).
Dyslexic children are physically and mentally
normal but have unusual difficulties in reading,
spelling and writing. According to a local press the
New Straits Times (2009), it is estimated about 5%
of school going children in Malaysia are dyslexic.
The word dyslexia is derived from the Greek
word “dys” meaning poor or inadequate and “lexis”
means words or language (British Dyslexia
Association, 2008). Along with the difficulties
mentioned above, dyslexia also affects memory,
concentration, sometimes mathematics, music and
self-organization (Hornsby, 1995). According to
some psychologists dyslexia is not a disease (Vicari
et al, 2005; Shaywitz, 2003; Berninger et al., 2008).
This is supported by Sariah Amirin (The Berita
Harian Press, 2009), the President of Dyslexia
Association, Malaysia in the quotation below:
“Dyslexia is not a disease it occurs in
children with normal vision and nothing to
do with the hearing, sight and brain
damage. It happens because the brain lacks
of a function to translate the image seen or
heard into something meaningful.”
Recently, there have been a number of
researchers looking at the benefits of multimedia
educational courseware and addressing various
educational issues in the market. This indicates that
multimedia applications are widely used within the
educational domain. Among others, the use of
multimedia as secondary learning tool could play an
important role to motivate students’ interest hence
improving their performance in learning.
The main objective of this research was to study
the problems faced by dyslexic children and to
evaluate the effectiveness of using multimedia
application as an alternative solution in order to
overcome the problems faced by them.
2 CURRENT STATE OF
EDUCATION FOR DYSLEXIC
CHILDREN IN MALAYSIA
In Malaysia, the dyslexia program was initiated by
the Education Ministry in 2004 where “Sekolah
Kebangsaan Taman Tun Dr. Ismail” was the first
school. At present, it is estimated around 5% or
314,000 of school going children in Malaysia are
dyslexic (New Straits Times, 2009). Even though the
figure is fairly high, the number of schools and
trained personnel addressing the problems are
relatively small; there are only about 30 schools that
193
Singh Sidhu M. and Manzura E. (2010).
A MULTISENSORY MULTIMEDIA MODEL TO SUPPORT DYSLEXIC CHILDREN IN LEARNING.
In Proceedings of the International Conference on Signal Processing and Multimedia Applications, pages 193-202
DOI: 10.5220/0002885901930202
Copyright
c
SciTePress
offer special programs for the dyslexic and 100
trained teachers in this field (Devaraj & Roslan,
2006; New Straits Times, 2009). Moreover, due to
the lack of knowledge, dyslexic children are left
behind and often misjudged as being lazy and slow
learners (low ability children with low IQ).
Based on the above-mentioned limitations,
a study was conducted on the problems faced by
dyslexic children and also the awareness level of this
problem in Malaysia. Based on the results gathered
from readings (journals and articles) and also
interviews (Dyslexic program teachers), it can be
concluded that Malaysia still lacks materials and
experts in the field (Lee, 2008; Devaraj and Roslan,
2006; Gomez, 2004). In a recent work, the causes
and symptoms of dyslexia have been defined
(Eze, 2010).
2.1 Problems Faced by Dyslexic
Children
Dyslexia as mentioned earlier is a specific learning
disability that leads to certain difficulties in the
child’s learning process. It is important for the
people around them (parents, teacher, siblings and
friends) to understand their problems so that they
can get the necessary help. Among those difficulties
as noted by Gross and Voegeli (2007) include:
difficulties in forming associations between letters
and sounds; remembering sequences of letters for
spelling; difficulties in recognizing or confusion
between letters or familiar words;
mispronunciations; difficulty in carrying out
instructions; directional confusion between left and
right; math activities; problems with sequencing;
difficulty organizing work.
All the above-mentioned difficulties have an
impact on the children’s ability to read, write,
navigate, comprehend and recall relevant
information (Rainger, 2003). On the other hand, the
difficulty with visual processing leads to the
problems of delay in visual object recognition and
problems with visual concentration and over
sensitive to light (Rainger, 2003). Additionally,
dyslexic children sometimes see words juggle in a
paragraph or rivers of white space. This problem is
referred to as a scotopic sensitivity (visual
perceptual disorder that affects primarily reading
and writing activities) or also known as Meares Irlen
syndrome (Irlen, 1991) where they might find that
the high contrast is difficult to read, for example
black text on white background (Rainger, 2003).
Besides that, they also have problems called Mirror
opposites or reversal of word and letter (Heymans,
2007). For example, they see letter “p” instead of
letter “q” and the word “saw” instead of the word
“was”.
2.2 The Courseware
The courseware developed for this research is based
on teaching and pronouncing words using the
national language (Bahasa Melayu / Malay
language) and targeted for beginners aged between
5 – 12 years old (teachers and parents may also use
as an additional teaching aid). The courseware
covers the following modules:
Bahasa Melayu reading for beginners.
Uses the eclectic-Express reading approach
(e-Xra) a technique that combines the two reading
methods that are phonics and whole word method
(as such we used the reading method i.e. one of
the phonetic reading for Bahasa Melayu).
12 syllables that are divided into 6 modules i.e.
module 1: ‘a’ and ‘ba’, module 2: ‘ca’ and ‘da’,
module 3: ‘fa’ and ‘ga’, module 4: ‘ha’ and ‘ja’,
module 5: ‘ka’ and ‘la’, module 6: ‘na’ and ‘ma’.
Each sub-module is supported with audio and
visual elements as well as hands on practice.
2.3 Learning Styles
In this research we also took into account the
learning styles of the children. Learning styles is
defined as individual’s preferences of acquiring and
using information when learning (Herod, 2002).
Thus the definition shows that different individual
has different learning style. There are three basic
types of learning styles that are very simple and
suitable for children namely visual, auditory, and
kinesthetic (Beatrice, 1994). However each
individual can have more than one learning styles or
preferences because most people learn through a
mixture of all three styles (James, 2009). It is very
important for teachers to deliver their teaching with
the combinations of these three learning styles to
accommodate different learning styles of each
student. This is supported by Reid (2005) where he
suggested that when students are taught using
techniques consistent with their learning styles, they
will learn more easily and efficiently.
Visual learners learn best using images, pictures,
colors, and maps. They can easily visualize objects
(Douglass, 2008). In addition, visual learners prefer
to write things down and they have to see to be able
to understand better. They like to imagine the
information given. This will make them process and
understand information better (Tannahill , 2009). On
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the other hand, auditory learner would prefer to
listen for information. They usually enjoy talking,
talk and read aloud and like explaining things to
others (The Penn State York Nittany Success Center,
2009). Apart from that, they are easily distracted by
background noise and having difficulties following
written instruction (Hutton, 2009). In contrast,
kinesthetic learner is basically a student who learns
most effectively from movement-based or motion-
oriented activities. They love to do hands on tasks,
physical activities and motor skills (Fleming,
2009). Further discussion is given by Manjit (2007)
on learning styles.
It is very important to identify students learning
style in order to accommodate the right teaching
method to enhance their learning performance
(Silver et al., 2000; Cutter, 2009). The learning
styles can be identified through observation or by
answering few questions related to learning styles
(Reid, 1987). There are many questionnaires
designed to identify children’s learning styles such
as:
Accelerated Learning by Dr. Colin Rose
(Grammatis, 1998).
Memletics learning styles inventory
(Advanogy.com).
A Learning Style Survey for College by
Catherine Jester (Jester, 2000)
Learning style inventory by Jonelle A. Beatrice.
(Union University, 2009).
For this research, we selected the questionnaire
“Learning styles inventory” designed by Jonelle
Beatrice (Union University, 2009) as the questions
provided are simple, straight forward and easy for
the lower primary school students (standard one to
standard 3) to understand.
2.4 The Teaching Technique
The suggested technique to teach dyslexic is by
applying the multisensory method in teaching
(Learning Disabilities Association America, 1998).
This method is proven to be effective method to
teach dyslexic children because it can accommodate
different learning styles (Logsdon, 2008). It is used
in many Special Needs schools and Dyslexia
centers, for example Dyslexia Association
Singapore, British Dyslexic Association, etc.
Research by the National Institute of Child Health
and Human Development (NICHD) reported that,
dyslexic children who were trained in multisensory
intervention program made significant achievement
in their learning skills (International Dyslexia
Association, 2000).
Multisensory teaching involves a simultaneous
links between visual, auditory and kinaesthetic-
tactile pathways to enhance learning and memory
(Marcia, 1998; Logsdon, 2008). In this technique,
children are taught to link the sounds of the letters
with the written symbol. They also have to link the
sound and symbol with how it feels to form the
letter/letters by tracing, copying or writing the letter
while saying the corresponding sound. Further
guidelines of what should be taught in multisensory
method can be found in Dyslexia Association
Singapore (2006) and Cecilia (2004).
2.5 The Malay Language Reading
Method
The first method of teaching beginners or children to
read Malay language is by using the alphabet
method (‘kaedah abjad / alphabet method’ or
‘mengeja / read’). In this method, children have to
spell out the letter names of segmented syllables
followed by sounding out the syllables then blending
up the syllables to form words. For example to read
the word ‘bola’ (which means ball), children have to
say the letter name of the first syllable (b + o) and
sound out as ‘bo’ and followed with the second
syllable (l + a) sound out as ‘la’. Finally they will
combine the sounds of those two syllables as ‘bola
(Elias, 1998). To be able to use this method, children
have to remember the name of all letters and the
sound of combined letters. However it will take
much longer duration for children to read fluently
(Ahmad, 2004). Figure 1 illustrates the step by step
process in reading using the Alphabet Method.
Figure 1: Reading strategy using the alphabet method.
The second method is the whole word or sight
word method. This method is similar to the look and
sees method. In this method, children will be
introduced to meaningful words using flashcards
with picture and associated word representing the
picture.
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The third method is the phonics method. This
method concentrates on the sound of letter and
sound of combined letters. Recently, the use of
phonics approach has been increasing especially in
pre-school. It shows significant improvement in
reading ability not only of the normal children but
also of dyslexic children (Ahmad, 2004). Due to its
benefit for dyslexic children as reported by
Hollowell (2009), Blevins (2003) and Ahmad
(2004), the phonics method was selected to be the
reading method in this research. Figure 2 shows the
steps in teaching Bahasa Melayu reading using
phonics method.
Figure 2: Phonic method in teaching Bahasa Melayu /
Malay language reading.
2.6 Dyslexia and Multimedia
With the problems faced by dyslexic children as
stated earlier, it is clear that dyslexic children need
additional aids as compared to normal children
(Shaywitz, 2005). In addition to the traditional super
visionary learning environment, dyslexic children
should be given the opportunity to explore reading
on their own, as it is indeed a good way to improve
their reading skills (Devaraju et al., 2006). Adopting
a computer aided learning (CAL) environment
would be an alternative as it could give flexibility to
the dyslexic children in terms of what to study and
when to study. Multimedia as mentioned by
Singleton (2006) is one of the aids to promote a
CAL environment since it has the potential to reduce
most of the problems faced by dyslexic children. For
example, Beacham (2007) in his article has
mentioned that learning materials containing text
can be supplemented with graphical and auditory
forms as dyslexic children are able to comprehend
meaning better in that format.
Multimedia has the potential to improve reading
ability as it provides large amounts of practice that
promotes the drill and practice concepts (Lundberg,
1992.). This is supported by Karsh (1992) in his
report where substantial gains were made by
dyslexic children in word reading fluency using
‘Construct a Word’ program. This program provided
drill and practice in forming real words by matching
consonants with word endings.
Lundberg (1992) in his research noted that
students who enjoyed the benefits of computer
training with speech feedback gained more in
reading and spelling performance compared to
students who had access to conventional special
education.
Singleton (2006) reported five principle
advantages of computer assisted instruction for
dyslexic children as following:
Increase motivational value
Individualized instruction
Informative feedback
Promotes active learning environment.
Customization feature
With all the benefits stated above, multimedia
has opened up a completely new world to dyslexic
students, one that could help them in their learning
process.
Multimedia presentation techniques do have a
potential in providing outstanding support for
dyslexic children (Heymans, 2007).
Based on the details discussed earlier, a
courseware was developed to assist dyslexic
children in reading Bahasa Melayu. The method of
teaching that was integrated into the courseware is
the multisensory method as it has been
recommended as the best method to teach dyslexic
children (International Dyslexia Association, 2000;
Marcia, 2000) at present. Besides the multisensory
method, the phonetics method was also used as a
reading technique in this research.
The courseware developed was tested to evaluate
its effectiveness as well as to identify the best
features or elements that should be incorporated into
the courseware to ensure that it will give full benefit
to dyslexic children. As a result a new courseware
development model especially for dyslexic children
was proposed. This is discussed in the next section.
3 DYSLEXIA COURSEWARE
DEVELOPMENT
This section briefly describes the courseware
developed to help dyslexic children in their learning.
The multisensory method as discussed earlier
suggests that the subject or course to be divided or
structured into modules and the organization of the
materials should follow the logical order of
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language. The content structure was based on these
guidelines. The content covers twelve sub modules
selected from a book (see sample content structure
in Figure 3 below).
Figure 3: Content structure of the courseware.
Each of the sub modules contains five pages
where the first two pages introduce the user to the
new syllable together with the previous syllables. As
an example, in sub module ‘ba’, the first two pages
will show the ‘ba’ syllable with the associate sound
of ‘ba’ together with the previous syllable (‘a’) that
has been introduced before. The ‘ba’ (new syllable)
is represented in blue colored text while the previous
syllable (‘a’) is represented in black colored text.
The third page shows the word or sentence that can
be made by combining the current syllable (‘ba’)
and syllables from previous sub modules. The forth
page is where the student can see the associated
pictures of animals, things or people where the first
syllable starts with the current syllable (‘ba’) for
example ‘basikal’ (bicycle). The associated picture
with sound is to help children remember the sound
of the syllable better. The last page is where the user
can practice writing the letters using the mouse. This
gives the user the feeling of how to write the letter
and further on, easier for them to remember the
letters.
For ease of interaction with all the modules, the
courseware is equipped with a menu that allows the
user to access any module that they want. Based on
the structure of the content as shown in Figure 3, the
navigational structure for the courseware was
designed. The navigational structure summarizes the
overall flow of the courseware. There are several
navigational structures such as linear, hierarchical,
non-linear and composite (Vaughan, 1996). The
navigational structure for this courseware is based
on the composite structure that combines the three
navigational structures that are linear, hierarchical
and non-linear structure. Figures 4 and 5 illustrate
the navigational structure for this courseware.
Figure 4: Courseware navigational structure.
From the main menu, the user can choose any
module(s) that they wish to explore. Figure 4 shows
the courseware navigational structure where from
the main menu, the user can click on any of the
module(s) button, i.e. the help button or the exit
button to exit from the courseware.
The navigational structure within each module as
illustrated in Figure 5 was designed to give
flexibility to the user in exploring the content and at
the same time bonded to certain limitation or
constraint. The limitation or constraint was that the
user had to wait till the whole contents of each page
were presented before the user could navigate to the
next page, previous page or repeating the same page.
The implementation of this concept was targeted to
force user to finish the module without clicking
unnecessary icons and be lost in the modules. In
addition, the user could also try to read the content
of each page their self. In a condition where they are
not sure with the sound associated with the syllable,
they can click on the syllable to listen to its
pronunciation. This feature is available once the
whole contents of the current page had been
displayed.
On the last page of each sub module, the user can
click on the pencil icon which directs them to the
page where they can practice writing up the
letters/syllable while watching the animation on how
to write those letters/syllable. Once they had
finished this module, they can go back to the current
sub modules and later advance to the next sub
modules or go back to main menu to choose other
module.
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Figure 5: Navigation within module.
Careful consideration was also taken in
designing the user interface design. We considered
the following six principles in designing the user
interface design: 1. Sufficient contrast between
foreground and background; 2. User control button
or navigation; 3. Provide sufficient white space so
that the information can be absorbed properly
(Hutton, 2009); 4. Fonts should be easy to read and
have clear spacing between letters; 5. Avoid using
blinking or moving text as this is hard for dyslexic
user to read and it will distract them; 6. Provide the
audio feature (narration) as this will help dyslexic
user.
The interface design for this courseware can be
divided into: Main page, Help page, Content/module
page and Writing Page. The main page was design
as simple and straight forward as possible
appropriate with its function as the first page of the
courseware. The page acts as an interactive table of
content or index page for the courseware. It has
menu buttons that will direct user to the modules in
the courseware. “Lady Bugs” were chosen as the
icons for the modules. The use of these icons was to
attract the user and make the page livelier. When the
user moves the mouse over the button, the ‘lady
bugs’ will stretch its wings. Tool tips are provided
for all the buttons together with the narration when
the mouse is moved over the button. This will help
dyslexic children understand the use of buttons
better. In total, there are six ‘lady bugs’ in this
courseware. Each ‘lady bug’ represents two sub
modules. Figure 6 shows the screen snap for main
menu.
Figure 6: Screen snap for the main menu.
As mentioned earlier, the content of this
courseware was adopted from the e-Xra technique.
With reference to the e-Xra book, we divided each
syllable as a sub module for example ‘a’, ‘ba’, ‘ca’
and others. Each module contains a combination of
two sub modules. All the sub-modules have the
same design in terms of the arrangement of
buttons/icons, colors and layout. This was to avoid
confusion and aligned with the interface design’s
principal that suggested a consistent design. Also
mentioned earlier, there is a directional confusion
among dyslexic children. The conventional way of
solving the directional confusion was by wearing a
bracelet on the left hand so the children will
remember that the hand with bracelet is the left hand
(Dyslexia Association of Scotland, 2008). In order to
cater this problem, the courseware is also equipped
with a left marker throughout the content page as
shown in Figure 7 label (a).
Figure 7: Screen snap for content page for sub-module ‘a’.
The left marker is represented using the hand
image which is located at the upper left corner of the
page. The use of the left marker is to assist dyslexic
children on identifying the left side of the page as
they always confused between left and right and
sometimes ends up reading from the right (Gross &
Voegeli, 2007). Besides the use of the marker,
another method was applied to help dyslexic
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children to overcome the directional confusion. The
method was implemented by showing the syllables
one by one from left on the screen. This means, at
the beginning of each content page, the letters or
syllables will be displayed one by one from left to
right. The process will continue on each new page.
This will indirectly help dyslexic children to read
from left. All screen for the alphabets have the same
design and layout. On the upper right corner of each
content page, the page number for example page 1
out of 4 pages as illustrated in Figure 7 label (b).
Page numbers will help user keep tracks of his/her
visited page.
Additionally, the courseware also offers a
background customization feature that will give
flexibility for the dyslexic children to choose the
background color that best suited them. The choices
of colors are represented with a color palette on the
top left corner of the courseware as shown in Figure
7 label (c). The main intention of this feature was to
lessen the scotopic sensitivity or Meares-Irlen
syndrome.
Besides the text and icons that represent the
visual features of the courseware, the courseware
was also equipped with pictures to support the
learning process. These pictures were used to signify
the syllables. Example is the use of “chicken
picture” that symbolizes the syllable ‘a’ in the Malay
language as shown in Figure 8.
Figure 8: Screen snap for content page for sub-module ‘a’.
On top of the visual layout of the content, the
courseware also offers the audio feature in term of
narration or the sound of each syllable. The sound of
syllable can be heard when the syllable appears on
the screen. The feature is tally with the multisensory
guidelines that has been discussed earlier. Moreover,
the user can also click on the syllable if they are not
sure of the sound. This can only be done when the
whole content of the current page has appeared. This
facility is hoped to help dyslexic children remember
the sound associated with each syllable better.
At the end of each sub module, the courseware is
equipped with the pencil button that will direct the
user to the writing page. The button is shown in
Figure 8 label (a) while Figure 9 shows the writing
page. This page is to compliment the kinaesthetic
feature suggested in multisensory method. The user
can try or practice to write the syllable as many
times as they wish and can click on the erase button
as shown Figure 9 label (a) to erase the writing and
try again. At the beginning of this page there will be
a voice narration that explains the steps that should
be taken for the activity (writing). On completion of
the text, the user could do some exercises provided
in the courseware to gauge their understanding.
Figure 9: Screen snap for writing page.
4 THE COURSEWARE MODEL
Based on the current structure and contents of the
courseware, a model is proposed (Figure 10) that can
be used as guidelines for the development of
multimedia courseware for dyslexic children.
Figure 10: Courseware development model.
According to Figure 10, there are three
components that represent the overall courseware
model as in the box labelled A. These components
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are the interrelated modules, i.e. the left marker and
the color palette for background.
The left marker was used to indicate the left side
of the courseware. The idea of having the left
marker was to reduce the problem faced by dyslexic
children who always gets confused between right
and left. This confusion may result in reading from
right. As such it was significant to have the left
marker displayed on the screen as this was found to
be suitable for a more advance courseware such as
for reading and comprehension. Besides that the user
can customize the background color using an in-built
color palette. This customization feature is essential
especially to reduce the scotopic sensitivity or
Meares-Irlen syndrome as explained earlier in the
literature.
Besides the three components explained above,
the courseware is bounded to the elements that
support the multisensory teaching as depicted in
Figure 10, box ‘B: The Elements’. These elements
are visual, audio and kinaesthetic content. These
elements are aligned with the multisensory concept
that has been discussed earlier. The kinaesthetic
elements for this courseware include the two way
interaction between the user and the courseware
where user can click the buttons, the syllable and
also changing the background color. In addition to
the above, the user can also practice writing the
syllable using the mouse.
The box labelled C: in Figure 10 represents the
interaction between the user and the courseware.
The two headed arrow symbolizes the two ways or
interactive communication between the user and the
courseware. The interactive communication between
user and the courseware was possible with the used
of buttons where user can control the flow of the
courseware that suited them.
5 COURSEWARE EVALUATION
In this research two evaluations were conducted
namely formative evaluation and summative
evaluation.
a. The formative evaluation was done among
normal children ages from 6 to 10. There were
six children involved in this evaluation. The
result from this evaluation is further discussed
in section 5.1.
b. The summative evaluations were conducted in
few schools that offer dyslexia intervention
class such as “Sekolah Kebangsaan Taman Tun
Dr. Ismail (2)” and also “Sekolah Kebangsaan
Taman Maluri.” This evaluation involved
dyslexic children and also teachers who are
teaching dyslexic children. However in this
paper only the overall performance statistical
experimental results are shown and discussed.
Complete results on pre and post test,
observation and interviews are discussed in
details in (Eze, 2010).
5.1 Results and Discussion
The overall performance statistical experimental
results are shown in Figure 11. The Figure shows
that 60% of the students who participated in the
experiment demonstrated a slight improvement in
their result. Another 30% of the students got the
same score for both pre-test and post-test. Most of
the students with the same result are in fact those
with a good score or the students who scored full
marks. Hence the use of the courseware did not
actually affect their performance for the reason that
they do not actually have problems in reading basic
Bahasa Melayu / Malay language. Figure 11 also
shows that 10% of the students had a slight drop in
their score. This might be due to carelessness or
difficulty to stay focus during the session.
Figure 11: Overall students performance.
Referring to the result and analysis discussed in
this section, it can be concluded that the courseware
developed based on the proposed model discussed in
section 4, benefited the dyslexic children especially
for those who are still in the beginning stage of
learning to read. It can be envisaged that the
performance might increase significantly if the
students were given more time to use the courseware
as their learning aid.
6 CONCLUSIONS
There are limited teaching and learning resources for
dyslexic children especially for Malay language. In
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this paper, a preliminary courseware model that
could assist the courseware developer in developing
effective courseware for dyslexic children was
proposed. A prototype courseware was developed
and tested. In general the evaluation results showed
positive results whereby the students reading
performance of the Bahasa Melayu / Malay language
improved. It is believed that the courseware is being
well received by the children who took part in the
evaluation process. However further work is in
progress to revise and improve the proposed model
further.
ACKNOWLEDGEMENTS
The authors would like to express their gratitude to
UNITEN for the support provided and Dr.
Kirandeep Kaur Sidhu for her comments and proof
reading this paper. Special thanks is also due to
Sekolah Kebangsaan Taman Tun Dr. Ismail for
granting us the permission to conduct the
experiments and evaluation of this work at the
school.
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