Project-Based Learning in Creating Edible Straws from Red Dragon Fruit Peel to Enhance Scientific Skills

Abstract

This study aimed to examine the implementation of a project-based worksheet incorporating red dragon fruit peel waste (Hylocereus polyrhizus) and its effectiveness in developing students’ science process skills (SPS). A pre-experimental method employing a one-shot case study design was utilized. The research was conducted at a vocational high school (SMK) in Cimahi City, involving 31 students from Grade XI Industrial Chemistry-C. The instruments used included a student activity observation sheet to monitor engagement during the learning process, a project-based worksheet, and a performance assessment rubric to evaluate students' science process skills. The observation results indicated a high level of student engagement, with an average activity score of 95%. Students’ cognitive performance in science process skills achieved an average score of 90%, while their psychomotor performance reached 96%, both categorized as "very good." The project-based worksheet designed for the production of edible straws from Hylocereus polyrhizus peel waste proved to be highly appropriate and effective in enhancing students' science process skills.