Design for Learning 1 14 Instructional Design Evaluation Cheryl Calhoun, Shilpa Sahay, & Matthew Wilson Editor's Note This is a remixed version of an earlier chapter on evaluation in instructional design that can be found at the ADDIE Explained website, and is printed here under the same license as the original. Evaluation sits at the center of the instructional design model. It provides feedback to all other stages of the design process to continually inform and improve our instructional designs. In this chapter we will discuss the Why, What, When, and How of evaluation. We will explore several of the most cited evaluation models and frameworks for conducting formative, summative, and confirmative evaluations. It is important to note that instruction can occur in formal instructional settings or through the development of instructional products such as digital learning tools. Throughout this chapter we will discuss interchangeably instructional programs and/or products. Effective evaluation applies to all of these forms of instructional design. Figure 1