CHED 446 |
| Over the years General Chemistry instructors from all over have identified common difficulties for students in understanding kinetics and equilibrium concepts such as: relating concentrations to reaction quotient to predict whether equilibrium is reached, distinguishing between kinetics and thermodynamics concepts to determine rates of reaction, predict the order of the reaction and equilibrium constant among others. To aid students in these problems a database consisting of 235 equilibrium and 212 kinetics questions was created through WebCT. It contains questions assessing most of the kinetics and equilibrium concepts covered in the General Chemistry course. The questions were divided according to the concepts involved and were presented to students in the form of online quizzes (one for each subject). Each quiz contained several questions of the concepts involved selected randomly from the database. After completing the quiz the student received instant grading and rich feedback containing detailed descriptions of the mistakes made and the correct approach to solving the problem on incorrect answers. The aim of this feedback is to develop the student's ability to solve kinetics and equilibrium problems without the need of an instructor and to enhance student's analyzing and self-teaching capacity. Also statistics were made to demonstrate that the student's who took these quizzes achieved a better performance in the course. |
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Undergraduate Research Poster Session: Chemical Education
11:00 AM-1:00 PM, Monday, March 26, 2007 Hyatt Regency Chicago -- Riverside Center, Poster
Division of Chemical Education |