Achievement of Students' Scientific Performance through Project-Based Worksheets in Solid Soap Formulation Learning

Abstrak

Scientific performance is an important competency in chemistry learning. Project-based worksheets provide structured learning experiences through contextual laboratory activities. This study aimed to describe the implementation of project-based worksheets and students’ scientific performance in solid soap formulation using avocado seed extract and butterfly pea flower (Clitoria ternatea). This quantitative study employed a pre-experimental One-Shot Case Study design involving 60 fourth-semester Chemistry Education students selected through total sampling. Data were collected using observation sheets and assessment sheets. The instruments were reviewed by two expert validators, with an aggregated Aiken’s V coefficient of 0.828, indicating high content validity. Data were analyzed descriptively. Student activity and worksheet completion reached 97.3% and 93.1%, respectively, both categorized as very good. Students’ scientific performance reached 93.7%, with the highest scores in problem formulation, hypothesis construction, and experimental design (100%), and the lowest in experiment execution and data collection (87.5%). These findings indicate high scientific performance following the implementation of project-based worksheets. Further research is recommended to employ a design with a pretest and control group to provide stronger evidence of changes in students’ scientific performance.

Kata kunci

• Chemistry Education
• bar soap
• project-based learning
• project-based worksheets
• scientific performance