Here is a bundle of a total of 24, no prep science CER photo image writing prompts for critical thinking that can be used as bell ringers, an introduction, review or assessment. Students use the Claim, Evidence and Reasoning model to construct scientific explanations. Each slide has a real world image, the main question and a graphic organizer for the students to fill in the claim, evidence and then reasoning. The second slide for each image supplies a place for the students to write the comple