TABLE 1.

Rating of one class session (course topic: isogamous vs. anisogamous reproduction).

Observable Areas	Traditional Class	GAE Class
Student participation	2.5	4.5
Reinforcing students’ conceptual understanding	3.5	4.5
Teacher interaction with the students	4	5
Energy level of class	3	5
Alternative teaching methods used	3.5	4.5

GAE = small-group active engagement exercises.

Ratings are averages from two independent raters who rated rubric areas from low (1) to high (5) on Likert-type scales.