Abstract

Statistical reasoning is a crucial mathematical competency that students often lack. While there have been studies on the use of Android teaching materials in statistics learning, few have focused on statistical reasoning using comic media. This study aimed to develop mobile Android-based teaching materials called StatCom to enhance students’ statistical reasoning in schools. The ADDIE framework was employed for this purpose. The study involved 40 high school students (aged 15-17 years) in Indramayu, Indonesia. The main instruments included teaching materials based on mobile Android StatCom and statistical reasoning questions. Data analysis techniques, such as paired sample t-tests, were used. The results indicated that students benefited from interactive teaching materials like mobile Android StatCom. The teaching materials and supporting instruments demonstrated validity (tobs = 5,784 > ttable = 1,777 for pretest and tobs = 5,114 > ttable = 1,721 for post-test) and reliability (rpre = 0,777 and rpost = 0,745). The trial results confirmed the feasibility and practicality of the mobile Android StatCom-based teaching materials. Furthermore, the implementation of these materials effectively optimized students’ statistical reasoning (t value = 15,686 with a significance value of 0,000). Future research could explore the impact of mobile Android StatCom-based teaching materials on overall competence.