Pengembangan Lembar Kerja Peserta Didik Elektronik (E-LKPD) Berbasis Problem Based Learning (PBL) untuk Memfasilitasi Kemampuan Penalaran Peserta Didik pada Materi Lingkaran

This research was instigated by teaching material in accordance with student need that was not yet available, it was the need of teaching material used for online learning and contain indicators of matematical reasoning abilities. This research aimed to know the feasibility and students responses to the developed E-LKPD. The research method used was Research and Development (R&D) with an ADDIE development model. The subjects in this reseach were 26 students of class XI SMPN 1 Cikupa. The data collection instruments were questionnaire of validation given to two material experts and two media experts, a teacher as well as learning expert, and student response questionnaires. The validity results by experts obtained information of E-LKPD feasibility were the assessment from the material experts got a percentage of 91,67% % with very good category, the assessment from the media experts got a percentage of 72,68% with good category, and the assessment from the learning experts got a percentage of 85,76% with very good category. The result of students responses for E-LKPD got a percentage of 72,68% with good category. Based on overall data analysis, it can be concluded that the developed E-LKPD based on Problem Based Learning was suitable and can be used on mathematical learning.