Development of student worksheet to improve mathematical representation ability using realistic mathematics approach assisted by GeoGebra software

Abstract

Nowadays, student worksheet is used with a lack of concern on students' mathematical representation ability. In fact, it is essential to encourage students to deliver their mathematical ideas in various ways for broader perspectives of mathematical problem-solving. This study aimed to generate a valid, practical, and effective student worksheet to improve students' mathematical representation ability with a Realistic Mathematics approach assisted by GeoGebra Software. The research is developmental research using the ADDIE model, which includes Analysis, Design, Development, Implementation, and Evaluation. The instruments used in this study included: assessment sheets (to measure the validity of the worksheet); student questionnaire; teacher questionnaire; observation sheets (to measure practicality of the worksheet implementation); and mathematical representation ability test (to measure the effectiveness of worksheet implementation). This study created a student worksheet for four meetings. The student worksheet met valid criteria, with an average score of 4.25. The practical criteria were indicated by student and teacher questionnaires, with an average of 4.25 and 4.4, respectively; and the learning implementation (81.72%). Furthermore, the learning material fulfilled the effectiveness criteria with the percentage of students' learning understanding was 85.71%.