This is the accompanying PowerPoint presentation for the unit “Teaching CER - Claim Evidence Reasoning: A Whodunit Mystery.” It includes a brief lecture on the concept of Claim Evidence Reasoning Model, instructions for students on how to do the activity , and abbreviated instructions for the activity from the unit for the teacher (no solutions). It does not include the "Teaching CER - Claim Evidence Reasoning: A Whodunit Mystery" unit teaching sequence which can be purchased separately.