**3.6 Using TWTD 2**

22 E-Learning – Organizational Infrastructure and Tools for Specific Areas

Figure 4 depicts the main classes of TWTD. The main classes are following PLITS [3] (a pattern language for constructing intelligent tutoring system). The details of using PLITS in

Fig. 2. Use Case Diagram for TWTD.

Fig. 3. Architecture Diagram of TWTD.

developing TWTD are discussed in details in [9].

Figure 5 depicts a snapshot of a handicapped student starting to use TWTD version 2. The markers are attached to the remains of the user's arms. In the figure the user is about to choose a given lesson out of the different options: English, Math, Shapes, Science). The applications are mainly what public schools offer in Kuwait.

Fig. 5. Setting up markers.

Towards Economical E-Learning Educational Environments for Physically Challenged Students 25

relates to specific disabilities and life tasks. For children with disabilities in public school classrooms, assistive technologies are their tools to extend their physical, social and

While the total cost of TWTD does not exceed the price of the web-camera. Other similar

Microsoft Surface is a multi-touch computer that responds to natural hand gestures and real-world objects, helping people interact with digital content in a simple and intuitive way. Surface also sees and interacts with objects placed on the screen, allowing users to move information between devices like mobile phones or cameras. Although the product is

HeadMouse Extreme replaces the standard computer mouse for people who cannot use or have limited use of their hands when controlling a computer or augmentative communication device. The HeadMouse captures the movements of a user's head then translates it directly into proportional movements of the computer mouse pointer. This device works just like a computer mouse, with the mouse pointer being moved by the

The EyeTech TM2 replaces the standard computer mouse which allows the user with physical disability to place the mouse pointer anywhere on the screen by simply looking at

EyeTech TM2 is program that uses a webcam set on the computer monitor that focused on one eye. EyeTech TM2 software Eye tracking is the process of measuring either the point of gaze or the motion of an eye relative to the head.Mouse clicks are done with either a slow eye blink, eye gaze or a Hardware switch (toe click, finger click, etc). The device costs

The Jouse2 is an advanced joystick-operated USB mouse that is controlled with user's mouth. The user moves the joystick with his/her mouth, cheek, chin or tongue to shift the mouse cursor wherever she/he wants. The further the user moves the joystick, the faster the cursor shifts. The user can perform right-click, left-click and double-click actions with the

Autism is defined by the Autism Society Of America (ASA) as: " a complex developmental disability that typically appears during the first three years of life and is the result of a neurological disorder that affects the normal functioning of the brain, impacting development in the areas of social interaction and communication skills. Both children and adults with autism typically show difficulties in verbal and non-verbal communication,

sip and puff switches built into the Jouse2. The device costs around \$1500 [8].

not available for widespread purchase, it is relatively expensive.

motion of the users head. This device cost around \$1000 [6].

communicative abilities.

products are far more expensive.

**3.9 Similar work** 

**Microsoft surface** 

**HeadMouse Extreme** 

**EyeTech TM2** 

the desired location.

around \$6,500 [7].

**Jouse 2** 

**4. ATB** 

**4.1 Problem** 

Figure 6 depicts a user interacting with the English application. In the upper right corner of the screen the user can see himself. The user can check his score at the end of the exercises. The figure also includes the Mathematics module where students have to match numbers to figures.
