Review of related literature and studies
Literature
* Kim (2006) how visual learning can affect the students way of learning. * Smith (2002) visual learners prefer to see how to do things rather than just talking about it. * Lehman, newby, russel, stepic (2005) computer-based tutorials have advantages such as students can interact with embedded questions then easily give feedbacks. * Laird (1985) by stimulating the senses, especially the visual sense, learning can be enhanced. * Computer assisted instruction – is an integrated module for the development and evaluation of the learning scheme of the users on the material provided. * * computer-assisted instruction (CAI), a program of instructional material presented by means of a computer or computer systems. The use of computers in education started in the 1960s. With the advent of convenient microcomputers in the 1970s, computer use in schools has become widespread from primary education through the university level and even in some preschool programs. Instructional computers are basically used in one of two ways: either they provide a straightforward presentation of data or they fill a tutorial role in which the student is tested on comprehension. If the computer has a tutorial program, the student is asked a question by the computer; the student types in an answer and then gets an immediate response to the answer. If the answer is correct, the student is routed to more challenging problems; if the answer is incorrect, various computer messages will indicate the flaw in procedure, and the program will bypass more complicated questions until the student shows mastery in that area. There are many advantages to using computers in educational instruction. They provide one-to-one interaction with a student, as well as an instantaneous response to the answers elicited, and allow students to proceed at their own pace. Computers are particularly useful in subjects that require drill, freeing teacher time from some classroom tasks so that a teacher can devote more time to individual students. A computer program can be used diagnostically, and, once a student’s problem has been identified, it can then focus on the problem area. Finally, because of the privacy and individual attention afforded by a computer, some students are relieved of the embarrassment of giving an incorrect answer publicly or of going more slowly through lessons than other classmates.
(source: http://www.britannica.com/EBchecked/topic/130589/computer-assisted-instruction-CAI)