The document outlines the classroom format for teaching CHEM 12171, which involves students presenting problems for 40 minutes and then working in groups for 30 minutes. It explains that having students present problems is meant to encourage active learning and collaboration. When presenting, students are required to meet with a TA beforehand to ensure they understand the problem without providing too many details. They should read part of the problem and set it up by addressing the background, concepts, and big picture ideas involved. This format aims to address past issues with students not being prepared, working well in groups, or using office hours.