Development of CABATAR Learning Media on Plane Geometry Material to Improve Numeracy Skills of 4th Grade Students at SDN Susukan 04 Pagi

This research develops the CABATAR learning media based on the Canva application to improve the numeracy skills of fourth-grade students on flat geometry material at SDN Susukan 04 Pagi. The research uses a Research and Development (R&D) approach, with both qualitative and quantitative methods. Data was collected through interviews, questionnaires, and validation by media and material experts. The study found that the CABATAR media was validated with 91.25% by media experts and 94.16% by material experts, both categorized as "Very Feasible." A small group of 10 students and a larger group of 31 students were involved in the trial, with student responses reaching an average of 90% and 89% from teachers, all categorized as "Very Feasible." Additionally, the pretest-posttest results showed a moderate improvement in numeracy skills, with an N-gain value of 0.62. The findings indicate that CABATAR media is an effective tool for enhancing numeracy skills in elementary school students and can be a valuable addition to flat geometry material in mathematics lessons.