Have control over the flow of the class
Time is one of the teacher's most precious resources. Every minute matters in the classroom.
Change the Pace
Get through portions of the class that you want to place less emphasis on much faster than portions of the class that you want to put more emphasis on. Create the illusion of speed during the portions of the class that students struggle with to keep student interest by changing the format.
Give Time Limits
Give students a set time limit for independent work, and make sure to stick to the time limit consistently.