A flipped service course for me is an arrangement where videos are online and on-campus class time is used for problem solving by students. I usually have a homework due date the day after the discussion.
The question is how to grade the participation part. If I assign high percentage then the non-participating students can go from C to F. If I assign low percentage A's have less incentive to participate. I am looking for a grading structure that lifts the whole class.
I try to be gentle and convey that public tutoring is a necessity. However attendance has been an issue and participation is so so. A problem with having videos online its that it gives students one more reason not to attend.
I simply tally the number of times a student has come to the board to get some N. The question is how to use N so that participation and attendance improve and the deviation in N is reduced.
Edit:
Does this work: Make exams a bit hard so highs are below 90. Then assign 10 for participation and 3 for attendance?
The class was ODEs and it had 18 students. By the end of semester the average participation was 7 times and the max was 20. Things that will improve the experience: (1) Rewrite the solution a student is presenting while they are writing their version, so that a clean and readable display is visible to the class. (2) Come up with a practical system to keep track of student participation. (3) Do an attendance check at the start and end of each class.