Infusion of collaborative inquiry throughout a biology curriculum increases student learning: a four-year study of “Teams and Streams”
Are traditional laboratories in the core introductory biology courses teaching physiology majors the art and trade of science, or simply leaving them with a memory of trivial experiments done for unknown reasons? Our students, a population dominated by premed and physiology majors, think the latter and have encouraged us to challenge this model, and it turns out scientists and education researchers agree with our students ( 4 , 31 , 32 ). In an effort to remedy this, we began a long-term redesign of the introductory biology sequence to become what is now a sequence of inquiry laboratories we term “Teams and Streams” (TS). In these TS inquiry labs, student research teams pose a scientific question/hypothesis, propose an experimental design, perform multi-week investigations and then present their findings in various forms (web, interviews, and papers). The response to this classroom laboratory design has been overwhelmingly positive. In a qualitative study of student opinion (where 260 student responses were studied), surveys conducted at the end of semesters where traditional scripted labs were used ( n = 70 comments) had predominately negative opinions (80% negative responses), whereas the reverse was true for students ( n = 190 comments) who participated in courses using the TS inquiry labs (78% positive responses). In a quantitative assessment of content knowledge, students who participated in new TS inquiry labs ( n = 245) outscored their peers in traditional labs ( n = 86) on Medical College Admission Test-style standardized exams (59.3 ± 0.8% vs. 48.9 ± 1.3%, respectively; P < 0.0001). We believe these quantitative data support the qualitative findings and suggest the TS inquiry lab approach increases student learning.