This handbook chapter provides an introduction to the expertise literature, overviews state-of-the-art empirical evidence related to expertise development, and presents a synthetic framework for design and evaluating instruction to build expertise. The 4D framework for developing expertise in classrooms incorporates elements that are: designed to enhance learning and development; domain-specific
... [Show full abstract] in scope; include deliberate practices; and, are distributed over time and space. Discussed for each of these four elements are the theoretical and empirical justification for their inclusion in the framework, instructional considerations, and analytic considerations. The synthesis of these four elements can serve as a starting point for a new researcher in the area of expertise or a practitioner looking to develop expertise in their students in the classroom.