Marshall, Student feedback can be very helpful in improving instructional technique. Generally, whenever students are commenting that the class pace is "too fast" it is for one of two reasons: 1) there may be too much text on the slides of your PowerPoints, in which students are not able to keep up with the advancement of the slides or 2) you are focused on covering all of the planned content for the day and naturally speed up the lecture, to ensure that everything is covered. My suggestions are to limit the amount of text on the slides (provide "key words" and visuals only) and to used "Socratic" questioning, in order to "check-in" with student comprehension and to allow time for them to "catch up" with you. Tremayne Simpson