Students were first asked to solve problems on their own as a homework assignment for an unspecified amount of time. The following day, students discussed their strategies and solutions to such problems together in class in small groups with their peers. Each small group contained 3-4 students and each group discussed one problem at a time for approximately 5-10 minutes while each class covered roughly 5-7 problems in total. Immediately after each class, students were emailed a link to an online survey in which they were asked to rank their confidence in solving the problems both before and after working in their small groups. The metric for confidence was measured as a rating on a scale from 0 to 10, with 0 meaning no confidence and 10 meaning full confidence. Altogether the surveys examined student confidence in solving 153 unique problems discussed over dozens of classes involving 3 different undergraduate chemistry courses. Two of the courses covered five separate sections of first-and second-semester general chemistry (mostly first-year undergraduates), and one course covered first-semester biochemistry (largely third-and fourth-year undergraduates).