A study of corrective feedback testing, in which scoring is based upon the number of attempts needed to achieve the correct answer, is compared to single attempt testing. (RAO)

Clear verbal communication is a key skill for the modern scientist. In this article we describe two model science courses, one given to a small class and the other to a large class, in which verbal communication is emphasized as a key learning objective. Both courses use a form of problem-based learning (PBL) with an end point that involves…