Interdisciplinary contextualization in mathematics education involves relating mathematical concepts to real-world contexts across different disciplines to make the concepts more meaningful and relevant to students. It has strong theoretical and empirical support for improving learning outcomes for students. However, implementing interdisciplinary contextualization requires significant effort from educators to collaborate across disciplines and design activities that incorporate authentic materials and problems from students' lives. Educators also need to consider individual differences among students and relate concepts to the diverse backgrounds and experiences of all learners.