This study was conducted to develop and to test the acceptability of a developed game-based assessment kit for the topic of light and optic in Form 1 Science. The study utilized developmental research design with quantitative survey approach and ADDIE model. 30 trainee teachers were randomly selected from the seventh semester of the Physics program. The instruments used in this study were validity forms and acceptability questionnaire. Statistical packages for Social Science Version 26 (SPSS) software was used to determine the value of Alpha Cronbach reliability coefficient while the acceptability level of kit was analyzed to obtain the mean score value. The validity of this developed game-based assessment kit was analyzed descriptively in percentage of expert’s agreement. Results show the face validity value of the developed instrument is 92.0% while the content validity is 89.0% and this instrument had reliability coefficient value of 0.936. On the other hand, the developed game-based assessment kit has a face validity value of 89.9% and content validity value of 92.7% while overall mean score of the trainee teachers’ perception of kit’s acceptability is 4.66 which consists of the Design = 4.6, Content = 4.64 and Uses = 4.73. As conclusion, this developed kit has good face and content validity as well as strong acceptance value among the trainee teachers. This kit was hoped to help as aid to the teaching and learning in Form 1 Light and Optic topic.
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