Developing EFL learning materials for adult learners: A Case in Indonesia

The current study aimed at developing English instructional materials for listening and speaking as additional learning sources. The research was conducted at Universitas Islam Negeri Mataram, Indonesia. The population was university students of semester three in academic year 2018/2019. There were 48 students as the respondents of 20 questionnaires. The current study followed Research and Development Procedures proposed by Borg & Gall (1979). It involves (1) a preliminary stage and collects information, (2) planning, (3) develop of product, (4) expert validation, (5) small-scale and large-scale field tried-out the students. The result of the research has shown that Indonesian students have confirmed the need for listening and speaking English materials. Since the existing materials used in learning had weaknesses, including the lack of opportunity for listening and speaking, the researchers have developed the TEFL materials to meet the standard. After being validated by the experts, and tried-out to the students, the developed TEFL materials have been able to improve students’ speaking ability