Introduce the Unit 4 skills of AP Lang in this complete, ready-to-teach, 3-week unit. By the end of this unit, students will be ready for the Unit 4 Progress Check. ***BUT WAIT! Before you purchase this unit alone, know that you can save over 20% by buying the Full-Year Curriculum BUNDLE.***This curriculum focuses on the Unit 4 skills outlined in the new CED:RHS 1.A--Identify and describe the components of the rhetorical situation: exigence, audience, writer, purpose, context, and message.RHS 2.