If you want your students to work on an assignment at a steady rate, the best thing for you to do is to

a. circulate around the room and praise students at frequent but unpredictable intervals.

To stimulate the response from the students, the teacher must continuously give reinforcements as a form of motivation each time there are assignments. This was students would feel satisfied with their work as it is recognized inside the class. This theory is known as associative learning through a conditioned stimulus of Pavlov.