Instructional design refers to the process of conceptualizing, organizing, and arranging elements of curriculum. This document discusses two models of integrated language teaching: content-based teaching and competency-based language teaching. It provides details on theme-based language teaching as an example of content-based teaching and the instructional design process for competency-based language teaching. The document concludes with examples of procedures for integrating different language skills like listening and speaking, and reading and writing.