Guided inquiry-based worksheet for science process skills assessment: Pineapple peel vinegar content analysis

Handiyanti, Amara (2026) Guided inquiry-based worksheet for science process skills assessment: Pineapple peel vinegar content analysis. ORBITAL: JURNAL PENDIDIKAN KIMIA, 10 (1). pp. 17-31. ISSN 2580-1856

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Abstract

This study aimed to develop a guided inquiry-based worksheet on acid–base titration to improve students' science process skills through analysis of vinegar derived from pineapple peel waste. This research used an R&D approach with the ADDIE model (Analysis, Design, Development, Implementation, Evaluation). The participants were 15 eleventh-grade students who had previously studied acid–base titration and were willing to complete the entire experimental process. The guided inquiry-based worksheet had undergone an expert validation stage, and the collected data were analyzed using percentage analysis to determine the feasibility of the worksheet, while students' science process skills and worksheet scores were converted into percentage scores and interpreted based on predetermined criteria. The validation results showed that the worksheet had a very high level of feasibility with an average score of 88.09%. The implementation results showed that students' science process skills were very good, with the highest aspect in observation reaching 93. The average guided inquiry worksheet score was 80. The worksheet developed in this study was declared valid and showed positive results in supporting students' science process skills.

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