R. M. Güemes’ 1994 research (cs15.pdf) highlights the critical role of textbooks in shaping language curriculum, advocating for flexible usage rather than rigid adherence. Modern approaches emphasize transitioning from form-focused instruction to meaning-focused materials that foster student engagement, authentic language use, and personalization. For a deeper dive into these principles, explore the text Meaning-Focused Materials for Language Learning . Meaning-Focused Materials for Language Learning