Developing a PhET- AIDED Ryleac model learning device to augment eighth graders' science process skills in vibration and wave materials at SMP Negeri Tangagah

The research aims to develop a PhET-aided Ryleac learning model device that is valid, practical, and effective for elevating students’ science process skills in vibration and wave materials. The research type was the 4-D (Define, Design, Develop, and Disseminate) model development research with a limited test on ten students and an extended one on 20 students (class A) and 19 students (class B). All students were eighth graders at SMP Negeri Tangagah in the academic year of 2021/2022. The results exhibited that:

·         According to the experts, the PhET-aided Ryleac learning model device developed was valid,

·         The learning device was practical, as featured by the mean score of learning implementedness and students’ positive responses to learning,

·         The learning device was effective, as indicated by:

o Student activities were good and excellent,

o Based on the observation results, student science process skills in the indicators of observing, predicting, data-interpreting, communicating, and concluding were good, and

The science process skill test scores acquired from limited and extended tests were 0.71 and 0.65, considered low and medium, respectively, indicative of the effectiveness of the PhET-aided Ryleac learning model device.