Depiction of curved arrow notation in organic chemistry using electronic response systems

CHED 1561

Suzanne M. Ruder, sruder@vcu.edu, Department of Chemistry, Virginia Commonwealth University, 1001 W. Main St., Richmond, VA 23284-2006
The development and implementation of electronic response systems (clickers) has enabled instructors to receive feedback on students' understanding of a concept during class. However, most clicker questions are multiple choice in nature, which calls into question whether a real understanding of more complex concepts are grasped, since students can often guess the right answer because it "looks" right. With the introduction of numerical responses on many clicker devices, questions can be developed that are less multiple choice in nature, and involve a higher level of critical thinking. We have devised a unique method of testing students' understanding of mechanisms using curved arrow notation, by taking advantage of the numerical feature of the clicker devices. This method allows students to gain practice learning how to draw curved arrows without the labor intensive grading necessary in a paper and pencil exam