What is the purpose of the Four Corners strategy? How could it be used in a classroom? How could it be used in a professional development setting? Conceptualize and summarize how the Four Corners strategy may be used to develop a concept of interest to you, keeping an intended audience in mind (i.e., students or colleagues). Include various leadership aspects and incorporate differentiated instruction techniques into your concept. For example, you can develop a concept for teacher training, where leadership plays an important role in professional development.