<![CDATA[This study aims to determine whether there is a significant influence of the Differentiated Learning model based on Brain-Based Learning (BBL) on students' mathematical connection abilities. This study is a quantitative study that uses a quasi-experimental approach with a Nonequivalent Pretest-Posttest Control Group Design, so this research uses two groups, namely the experimental group and the control group that are given different treatments. The population of this study is all grade X students of the even semester of the 2025/2026 academic year of SMAN 10 Kota Tangerang, totaling 306 students. While, the sample was selected using a cluster random sampling technique, so that two classes with a total of 70 students were selected. The research instrument was in the form of essay questions on the trigonometric comparison material consisting of 6 questions to measure students' mathematical connection abilities. The results showed that students who were given differentiated learning treatment based on Brain-Based Learning (BBL) showed a higher level of mathematical connection abilities than students who were given differentiated learning treatment. Thus, it can be concluded that there is a significant influence of the differentiated learning model based on Brain-Based Learning (BBL) on students' mathematical connections.]]>
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