This comprehensive volume examines the integration of STEM/STEAM education with English Language Teaching (ELT), offering a scholarly analysis of this innovative pedagogical approach. The text begins by elucidating the historical context and theoretical underpinnings of STEM/STEAM education, followed by an in-depth exploration of its core principles and interdisciplinary nature. It then critically evaluates the symbiotic relationship between STEM/STEAM and language acquisition, emphasizing the development of crucial 21st-century competencies. The work proceeds to elucidate implementation methodologies, addressing curriculum design and instructional strategies. Potential obstacles are scrutinized, accompanied by evidence-based solutions focusing on resource allocation and professional development. Empirical case studies are presented to illustrate effective practices, providing a rigorous examination of successful programs. The concluding chapter offers a forward-looking perspective on emerging trends and the global significance of STEM/STEAM literacy. This scholarly work aims to contribute to the growing body of research on interdisciplinary education.