The professor who was teaching these two classes was unable to teach the material for one lecture on “3D Moments.”
An alternate professor was used for the control group class. The experimental group was assigned the videos only and
never had a face-to-face lecture on this topic. There were two questions on the final exam on this topic. The means of
the control and experimental group on these two test questions is displayed below in Table 5. The means for these two
test questions were essentially equal whether the material was delivered by a faculty member in the control group or
through supplemental videos with the experimental group.
Table 5. Mean Comparison on Lesson Delivered by Video Only in Experimental Group