Developmental Biology is the last course for a biology major, so the population consisted of juniors or seniors who should have acquired a substantial amount of knowledge in different fields of biology. The experiment consisted of about 70 undergraduate students in Developmental Biology, including students with varying interests levels in the material. All students are accustomed to lecture based classes and being required to learn large amounts of factual information, memorizing, and working independently. Most students lacked conceptual understanding and this was evident during the Developmental Biology course, in which students were expected to apply what they have been taught in their previous courses about genetics, molecular biology and cell biology.