The purpose of this study is to (1) Find out how to develop a spring oscillator, (2) Find out how to practice the spring oscillator tool developed. The learning model used in this study is case-based learning. The research method used is research and development using the ADDIE model. The instrument of data collection used was a questionnaire for the validation of spring oscillators by material and media experts. The subjects in this study were class X students of SMA Negeri 2 Indramayu.

The results of the study were (1) spring oscillator practicum tools: The results of the spring oscillator practicum test were carried out with three experimental objectives, namely (a) the spring constant provisions, (b) determine the frequency of vibration (c) Change vibrations with external forces; (2) the level of feasibility of spring practicum tools with the feasibility percentage of material experts 91.4% and expert media 84.16%. The material feasibility test was carried out by two material experts, experts in physics media experts, Jakarta State University. The following bar diagram from the results of the validation test of the spring vibration oscillator practicum by material experts and media experts are as follows:

 

Figure 1. Graph of material expert validation results

 

Based on figure 1, learning material experts is conducted by assessing 3 items of conclusions, such as spring vibration oscillator learning media that are suitable for use in learning by interpreting well.

 

Figure 2. Graph of media expert validation results

 

Based on Figure 2, the feasibility of testing media experts conducted by awarding 5 items of media concluded that the learning media for spring vibration oscillator is appropriate to be used in learning by interpreting well.