To provide appropriate and effective instructional supports to students with disabilities, special education preservice teachers require development of expertise in the design and delivery of specially designed lessons. It is critical that special education preservice education programs provide students ample opportunities to learn how to evaluate and adapt lesson plans through the application of the elements of explicit instruction. In this article, we explain how to develop preservice teachers' expertise in the evaluation and adaptation of mathematics lesson plans with the elements of explicitness to better support students with disabilities. The example activity and assignments provided are anchored in the context of a university math methods course and include all necessary materials.