Roles of CALL Computer-Assisted Language Learning CALL

finally, the use of computer is not maximally employed in teaching learning process. Last, the existence of CALL programs is imperfect. Commonly, CALL program is designed for facilitating students to learn language limited for only one aspect because it is still difficult for specialists to design an application that can help teacher teach all language aspects using one program. In addition, the design of current CALL programs still unables to handle unexpected learning problems as well as response to students‘ questions immediately as teachers do. In short, CALL has disadvantages in language teaching and learning. It is because computer is not practical to be used and not all schools provide students with computers. In addition, there are some teachers and students who still do not know how to operate computer which then makes the use of computer is not maximally employed. Moreover, the existence of current CALL programs is still imperfect for teaching all language aspects.

D. Teaching Past Tense Using CALL: Power Point Macro-

Enabled Show In this study, the teaching of grammar using CALL is divided into the following stages: 45 1. Presentation At the presentation stage, the role of CALL is to assist instruction. It employs tutorial as an instructional strategy at this stage. Therefore, at this stage, the function of CALL is as a tutor. It is used to present explanation or illustration of the new material being learnt. The explanation will be equipped with animations, sounds and video to attract students and make learning more interesting for them. This equipment will help them memorize the material quickly and longer. 45 Celce-Murcia and Hilles, loc. cit. 2. Focused practice. At this stage, the role of CALL is to assist instruction. It functions as a tool which provides students with exercises to manipulate the structure in question while all other variables are constant. The instructional strategies that will be used in this stage are practice and game activities. In practice activities, the design of CALL is like doing exercises on computer in the form of multiple choice items and short answer items. At this stage, students will get immediate feedback from the computer such as they will be given their score and the explanation of the answer. While in game activity, students are required to play grammar game on computer.