The development of learning instruments based on an openended approach to improve students' problem-solving skill

Abstract

Mathematics subject aims to help students to improve their problem-solving skill. One of the potential approaches that could be applied by teachers in mathematics teaching and learning process is the open-ended learning approach. This study aimed to develop the valid learning instruments on topics quadrilaterals based on open-ended approach, which included lesson plans, student worksheet, and test questions. The study focussed on Year 7 of one of the junior high schools in Banda Aceh, Indonesia. This study is a development research, which implemented a 4D model, consisting of four stages (Devine, Design, Development, and Disseminate). However, only the first three stages were conducted in this research. The validation process involved four validators specialized in mathematics education (two lecturers and two teachers). The finding showed that the average validation score of the developed instruments was 3.54, which indicated that the instruments were valid. Further studies to know the effectiveness and practicality of the instruments need to be conducted.