You have an opportunity to assess during the session, alongside their learning itself. The solutions that learners have come up with, either individually or through collaboration, the quality of the solution, can help facilitators continuously monitor, provide feedback and improvise to assess progress. Alternatively, the facilitator can pick up key points from the problem and solution framework to quiz the learner. Solutions derived could be compared with life experiences, history, research to pass an effective judgment on the quality of the solution.