Numeracy website of local wisdom in mathematics learning: Metacognitive approach and mathematical reflective thinking ability

This research is motivated by the low numeracy ability and mathematical reflective thinking. The metacognitive approach trains students to understand problems, make connections, develop problem-solving strategies, and evaluate and reflect on their work. Numeracy in it is related to the context of local wisdom. This research aims to develop a numeracy website grounded in local wisdom, using a metacognition approach to improve mathematical reflective thinking skills. This research method uses DDR (Design and Development Research), which consists of identifying problems and defining the research focus, designing and developing products, implementing, evaluating, and communicating test results. The subjects of this research were 10 and 30 junior high school students. Data analysis was carried out using descriptive statistics and the normalized gain test to assess effectiveness. The instruments used were mathematical reflective thinking ability tests, education questionnaires, educational materials, media, and a student response questionnaire. The results of this study concluded that website media developed by media experts (89.5%), education (93.6%), and materials (95%) are very feasible and interesting, and student responses are very good or very positive (80.55%). This numeracy website can improve mathematical reflective thinking skills to a very high level (0.79).