Teaching reflection and refraction of light: TLM vs ILD

Abstract

This study reports on the comparison between the Traditional Lecture Method (TLM) and the Interactive Lecture Demonstration (ILD) as approaches to teaching reflection and refraction of light. A pretest-post test design was employed using two groups, namely, the experimental (ILD) group and the control (TLM) group. Data analysis showed that there is a statistically significant increase in the mean gain of scores of the ILD group compared to the TLM group in general.