In an increasingly interconnected world, STEAM education offers a powerful framework for equipping students with the skills to navigate complexity and change. Our research investigates the pedagogical intersections and distinctions among mathematics, science, and geography, focusing on inquiry-based learning. While each discipline brings distinct epistemologies and methodologies, they are also committed to fostering critical thinking, creativity, and problem-solving. We are exploring how interdisciplinary integration can enrich mathematics teaching and learning by drawing on research highlighting the curriculum potential of Humanities subjects—such as geography—for design thinking in STEM education (Kidman et al., 2024). Examining theoretical frameworks and classroom practices, we identify strategies for enhancing collaboration across disciplines and promoting holistic, student-centred learning. Our work contributes to the discourse on integrated STEAM education, offering practical insights for educators seeking to design innovative, inquiry-rich pedagogies that unlock students’ potential across diverse knowledge domains.