<![CDATA[The development of educational technology requires teachers to be able to integrate innovative learning media into the learning process, especially in mathematics subjects that contain many abstract concepts. One technology that has the potential to support mathematics learning is Augmented Reality (AR). This study aims to determine the effectiveness of training on the use of AR media in improving the competence of mathematics teachers at MA Al-Bidayah. This study used a quasi-experimental approach with a one-group pretest–posttest design. The subjects were mathematics teachers at MA Al-Bidayah who participated in training on the use of AR media. Data collection techniques were carried out through pretest and posttest tests, teacher response questionnaires, and observations. Quantitative data were analyzed using paired sample t-tests, while qualitative data were analyzed descriptively. The results of the study showed a significant increase in teacher competence after the training, with an average pretest score of 55.5 increasing to 82.5 in the posttest. In addition, the questionnaire results showed that the majority of teachers gave a positive response to the use of AR media in mathematics learning. Teachers assessed that AR media was able to facilitate the delivery of material, increase student learning interest, and create more interactive learning. Based on these results, it can be concluded that training in the use of AR media is effective in improving teacher competence and has the potential to improve the quality of mathematics teaching in Islamic high schools.]]>
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