Research and Development of Public Speaking Abilities by Role Play of Grade 11 Students

Abstract

This study is a research and development project on enhancing public speaking abilities by using role-play for Thai students in grade 11. This study has two objectives: 1) to compare the public speaking abilities of grade 11 students before and after learning by role-play, and 2) to compare the public speaking abilities of grade 11 students by role-play activities to be effective according to criteria 60 and higher than before the experiment at .05 level of significance. The sample was selected from a group of 30 students in grade 11 at Saipanya School Under the Royal Patronage of Her Majesty the Queen, Bangkok, Thailand. The research was conducted between September to December 2024 and the Scoring Rubric of public speaking ability is the key instrument. The statistics used in data analysis were mean, percentage of the average, standard deviation, T-test for dependent samples.
The research results show that: 1) The ability in public speaking of grade 11 students after learning based on role - play is significantly higher than before the level of 0.05. 2) The ability in public speaking of grade 11 students after learning based on role- play had 78.15 percent improvement which higher than the criterion of 60 percent with significantly at the level of 0.05.