Hi Jolyn:
You're very prepared! Methods to use when what was planned cannot be covered include discussion, Q&A, student-guided review, or critiquing a section from a textbook, as just a handful of exampls.
These are all low key, low tech, low maintenance activities that require little preparation but are great for engaing students in their own learning, which they're likey to remember more from anyway than some.one giving information.
Regards, Barry
