At the University of Nottingham, students are taught aspects of reproductive biology throughout the Part I Basic Medical Science Course. Teachers from the Departments of Physiology and Pharmacology, Human Morphology, Biochemistry, Obstetrics and Gynaecology, and Psychiatry are involved, and an obstetrician in training (the author) has been appointed full-time lecturer in Physiology and Pharmacology to provide an additional link between the basic science and clinical content of the course. The Part II course includes an Honours Year, to give students an opportunity to explore further the application of scientific method in clinical practice. One project, in which students were involved in physiological measurement used in current obstetric practice, is described here. In addition to carrying out practical tasks, students were required to submit written reports and to prepare a learning resource on fetal acid-base balance for use by their junior colleagues. Supervision was provided by obstetric and paediatric registrars and senior house officers, and senior midwives, while staff in the Department of Physiology and Pharmacology assisted students with data analysis. Each project task was assessed by a supervisor and an independent observer. The project proved acceptable to students, supervisors and hospital staff, and avoided interfering with the other responsibilities of a busy obstetric unit. It is intended to repeat the exercise with minor modifications.