  We present a method to study engagement level uniformity in a class of
students. We validate our method by comparing two semesters taught using
different methods in a physics and mathematics course. The first semester used
conventional methods while the second semester used graphic spreadsheets-based
laboratories and homework before the introduction of formal methods. We found
that engagement of the students that were below the median at the beginning of
the semester improved by an order of magnitude (by our metric) while the
engagement level of students initially above the median did not change.
