The document discusses the backward design model for creating student-centered units. It begins with the three stages of backward design: 1) Identify desired results, 2) Determine acceptable evidence of student learning, and 3) Plan learning experiences and instruction. Each stage is then explained in more detail with examples provided. The document also discusses the three communication modes of interpretation, interpersonal, and presentational, providing examples of tasks for each. It concludes with an explanation of an integrated performance assessment involving all three modes.