P605: Combining lecture demonstrations, computer simulations, clicker questions using a guided-inquiry approach to provide an opportunity for students to increase their conceptual understanding of topics in general chemistry
Lecture demonstrations continue to play a role in the college general chemistry curriculum. We have developed a series of interactive in-class activities for teaching the following topics: classification of chemistry reactions, gas laws and the kinetic molecular theory, phase changes for carbon dioxide, solubility and intermolecular forces, trends in reactivity of metals, and factors influencing rates of reactions. We use a guided-inquiry approach to our lecture demonstrations. Each lecture demonstration is integrated into the class activities. Prior to each of the demonstrations, students are asked to predict what will happen using clickers. Computer simulations of the demonstration at the particulate nature of matter are shown and then students observe the demonstration (exploration phase). Students are then introduced to the concept. Students apply their knowledge in a slightly different context (application phase). Our presentation will show how the clicker questions, demonstrations and computer animations are presented to students. We will also discuss preliminary data on the effectiveness of this approach comparing students’ performance on the clicker questions to their performance on conceptual questions on the hour exams and final exams.