A COMPARISON OF THE EFFECTIVENESS OF LCD PROJECTOR AND CHALKBOARD AS A TEACHING AID FOR UNDERGRADUATE LECTURE CLASSES
Journal Title: Journal of Evolution of Medical and Dental Sciences - Year 2017, Vol 6, Issue 60
Abstract
BACKGROUND LCD projector is an AV aid with versatile uses, but frequent power failure and lack of availability of the equipment, has led to considering cheaper and easily available alternatives like chalkboard. The present study was conducted among first year medical students of Government Medical College, Thiruvananthapuram to compare the effectiveness of LCD projector and chalkboard as a teaching aid for undergraduate lecture classes. MATERIALS AND METHODS Interventional study design was chosen. 183 students who were willing to participate and have given written consent for the study were included. Lecture classes were taken using LCD projector as the only teaching aid. Class of similar difficulty was taken for the same batch using chalkboard. At the end of each class, separate MCQ tests were conducted and the marks of 183 students were compared. After the sessions were over feedback was given by 144 students. Data analysis was done using SPSS 21. Mean scores of MCQ tests by the two methods were compared using unpaired t test. Feedback from the students was analysed using Chi square test. RESULTS The difference in the mean scores of MCQ tests was very highly significant, favouring the LCD projector. The feedback also favoured the LCD projector, especially for demonstration of diagrams and charts. The overall assessment also was similar for LCD projector and chalkboard. CONCLUSION In the present study, the LCD projector was preferred over the chalkboard as a teaching aid, especially for demonstration of diagrams and charts and the mean scores of MCQ tests. Other aspects of the two sessions were not significantly affected by the audio-visual aid used.
Authors and Affiliations
Mary Chacko P
Keywords
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- EP ID EP226801
- DOI 10.14260/Jemds/2017/950
- Views 118
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