The dominant complexities of English teaching in Indonesia are about limited development of teaching methods and materials which still cannot optimally reflect students' needs (in particular of how to acquire knowledge and select the most effective learning models). This research is to develop materials with complete task-based activities by using CALL at junior high school in Indonesia. In order to entirely develop comprehensive materials, the first step is to do need analysis especially identifying task based learning model which fulfils students' expectation, creates and develops pre-task and task cycle (consisting of task, planning, and reporting) into CALL integration of learning module. The results of the students' needs show that they like to have appropriate materials for their level, related to real life, variety of media and sources of learning chiefly incorporated to computer which optimizes interactive, contextual, and authentic materials. Therefore, the design of its prototype consists of three main steps. First, pre-task activity, it is designed in observing and questioning stage which is done by providing English comics with thematic situations. Second, main task activities, it is designed in exploring and associating stage which are done by presenting real life situations by utilizing videos, songs, and stories which elaborate exercises, role play, and discussion sections. Finally, post task activity, it is designed in communicating stage and it is intended to provide follow-up activities in wider contexts. The evaluation of the final product is done by validating the materials by means of a group discussion with English teachers.