PENGEMBANGAN LKPD BERBASIS PMRI PADA MATERI KOORDINAT KARTESIUS DI SMP
The purpose of this study is to develop a valid, practical and effective PMRI-based Student Worksheet (LKPD) on the Cartesian coordinate material in SMP. This type of research is Research and Development (R&D) research. This research is a research that was developed using the 4D model (define, design, develop, and disseminate). This research was conducted in class VIII F of SMPN 16 Tanjungpinang, as many as 36 people. The research instruments used were validation sheets, student questionnaire responses sheets and test sheets. The results of this study indicate that the validity value of 3.97 valid categories. The practicality value is 4.52 classified as very practical, and the effectiveness value of 80.55% is classified as effective. It can be concluded that the Student Worksheet (LKPD) based on PMRI on the Cartesian coordinate material in SMP is considered valid, practical, and effective.