Many professors have a policy that punishes individuals if they do not come to class. Instead of punishing students who do not attend class, what could the professor do to provide a positive incentive to come to class

this who come to class should be given extra point

Explanation:

To provide positive incentive, student who did well call be compensated. When the students knows that for attending a class there is an extra point either for answering questions or coming early it create a drive in them because they would all love to get point without working much this will also further increase the number of students that turns up for every class.

The point may not be given on every class but on few occasions to encourage those who come for lectures and make those who do not come turn up.