Development of Problem-Solving Skills Instrument in the Context of Toroan Waterfall: A Validity Study

Lailatul Qodriyah; Herlina Mulyastuti; Wiwin Puspita Hadi

doi:10.61142/esj.v4i3.496

Authors

Lailatul Qodriyah Universitas Trunodjoyo Madura
Herlina Mulyastuti Universitas Trunodjoyo Madura
Wiwin Puspita Hadi Universitas Trunodjoyo Madura

DOI:

https://doi.org/10.61142/esj.v4i3.496

Keywords:

Problem-solving skills, Validity, Test instrument, Toroan waterfall

Abstract

This study aims to develop a problem-solving skills test instrument based on the local context of Toroan Waterfall and examine its content validity and students' responses to the developed instrument. The study employed a Research and Development (R&D) method using the ADDIE model, which consists of five stages: analysis, design, development, implementation, and evaluation. However, the implementation stage was not conducted because the study focused on developing and assessing the initial feasibility of the instrument. The developed instrument consisted of 10 essay questions covering work, energy, and simple machines, structured according to Polya's four problem-solving stages: understanding the problem, planning a strategy, implementing the plan, and reviewing the results. Content validity was assessed by four experts using Aiken's V formula, while students' responses were collected through one-to-one testing involving three students and small-group testing involving ten students. The results showed that the instrument achieved an average Aiken's V coefficient of 0.96, indicating a high level of content validity. Furthermore, students' response percentages reached 72% in the one-to-one test and 73% in the small-group test, both categorized as good. These findings indicate that the developed instrument has high content validity and received positive responses from students. Therefore, it is considered suitable for initial use as an assessment instrument for students' problem-solving skills in science learning, particularly in the context of Toroan Waterfall. Further research is needed to implement the instrument in classroom settings and examine its broader applicability.

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