The needs analysis activity conducted on teachers and students of class V-B MIN 25 Aceh Besar showed a lack of variation in teaching materials in the form of LKPD based on a learning model as a learning resource. This study aims to develop, test the feasibility of the product, and to determine the responses of teachers and students to the RADEC-based mathematics LKPD (read, answer, discuss, explain, create) in class V MIN 25 Aceh Besar. The development research model used is ADDIE (Analysis, Design, Development, Implementation, Evaluation). The results of the study showed that the LKPD based on the RADEC learning model had met the criteria of being very feasible through validation by media experts with a score percentage of 98.18%, and material experts with a score of 95%. The results of the teacher's response obtained a percentage score of 92.2% with a very feasible category and the student's response also obtained a percentage score of 89.5% with a very feasible category. Thus, it can be concluded that the development of RADEC-based mathematics LKPD is declared very feasible to be used as a variation of teaching materials by teachers and students.
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