This document discusses classroom assessment techniques (CATs), which are simple, non-graded activities used to provide instructors feedback on student learning. It provides examples of CATs like the Muddiest Point and Minute Paper. The document emphasizes that CATs help instructors improve their teaching by gaining insights into student understanding. It also notes that CATs benefit students by encouraging self-assessment and engagement. Overall, the document promotes the use of CATs to enhance the teaching and learning process through frequent formative assessment.