Abstract
Polite behavior is an essential part of character development in elementary education, yet many students still show inconsistent use of respectful language, courtesy expressions, and appropriate social conduct. This study examined the effect of gamified learning videos on the polite behavior of fifth-grade elementary students. A quantitative quasi-experimental design with a nonequivalent control group pretest-posttest model was employed. The participants were 37 students divided into an experimental group of 17 students and a control group of 20 students. Data were collected using a 20-item Polite Behavior Observation Scale covering respectful communication, courtesy expressions, respect for others, permission and turn-taking, and considerate social conduct. The experimental group learned through gamified videos, while the control group received conventional instruction. The results showed that the experimental group achieved a significantly higher gain than the control group, t(35) = 3.64, p = .001, with a large effect size (d = 1.20). The strongest improvements occurred in courtesy expressions and turn-taking. These findings indicate that gamified learning videos can support polite behavior by combining behavioral examples, challenges, feedback, and reinforcement.