Hi Patricia:
First 20 minutes I take roll by asking students questions from the homework as I call their names out loud. This is an ice breaker and really gets students talking.
Second 20 minutes - Lecture with students taking notes
Third 20 minutes - an assessment of some type
Fourth 20 minutes - group exercise (no more than 5 to a group
Fifth 20 minutes - reflective writing exercise.
and so on. You can include (video clips, guest speakers, current event discussions, and so on...