Educational research has been carried out for decades, but few discuss the concept of microteaching. According to the need-analysis conducted, it was found that IKIP PGRI Madiun, particularly Department of English Teaching, requires an effective microteaching model of which is able to strengthen the students’ ability to teach English. Thus, this study aimed to (1) obtain a microteaching model implementing instructional approaches to the students of English Teaching Department, and (2) determine the effectiveness of the model in improving students’ teaching skills (pedagogical competence). This study used a Research and Development Model developed by Borg and Gall. The limited trials-testing used a single model of one-shot case study, while extensive field-testing used a quasi-experiment design with non-equivalent group pre-test post-test. The population was students of English department programming microteaching class in the academic year of 2013/2014 with a number of 326 students, of which the samples are 6b.1, 6b.2, 6e.1, 6e.2, 6f.1, and 6f.2. The data collection techniques used were in the form of performance test of student during practicing teaching, and non-test in the form of observation to obtain natural data implementing instructional approach; a questionnaire to obtain feedback from the supervisors and the students of microteaching; and interviews to collect qualitative data which cannot be gained using observation and questionnaire. The data were analyzed both qualitatively using descriptive statistics and quantitatively using t-test to know the effectiveness of the model. The results showed the implementation of an innovative microteaching model based on instructional approach is divided into 4 phases namely preparation, pre-implementation, implementation, and evaluation. Moreover, the results of both limited and extensive testing of this model showed (1) the substance of the content and structure of the model are flexibly designed, (2) The application of the model ease the lecturers in preparing lesson plans, implementing learning, and evaluating the learning outcomes; and (3) The application of the model is able to improve the students’ basic skills of teaching. Therefore, it is suggested to the lecturers of microteaching class to use this model, and recommended for department of English Teaching IKIP PGRI Madiun to regulate the application of the model into microteaching class.
Keywords: Instructional Approach, Microteaching, Research and Development.