This is an excellent resource to understand affordance principles in the context of language learning and educational design. Rooted in ecological and sociocultural theories, the concept of affordances refers to the opportunities for action that the environment offers to learners based on their abilities, intentions, and sociocultural context. This resource clearly explains how physical, digital, and social environments can afford—or constrain—language learning opportunities. It offers examples from classroom practice, including how task design, materials, technologies, and peer interactions can shape learners’ engagement and agency. The resource is particularly useful for teachers, instructional designers, and researchers aiming to create responsive learning environments that support autonomy, exploration, and meaningful language use. It also explores the role of affordances in multimodal and plurilingual contexts, helping educators to notice and leverage the diverse resources that learners bring to the classroom.