Pengaruh Instrumen Portofolio berbasis Proyek terhadap Kemampuan Pemecahan Masalah pada Mata Pelajaran IPAS Kelas IV Sekolah Dasar

Abstract

This study discusses the lack of student problem-solving abilities, which is characterized by the lack of student involvement and understanding in solving and understanding a problem given by the teacher and directly. The purpose of this study refers to the influence of project-based portfolio instruments on problem-solving abilities in science lessons on the topic of my hometown. This type of research is quantitative with a True Experiment research method with a randomized pretest posttest experiment control group design. This research was conducted at SD Negeri 074051 Sisarahili with sampling using the Saturated Sample technique, namely all 35 fourth-grade students of SD Negeri 074051 Sisarahili in the 2025/2026 academic year. The research instrument used was performance where the performance instrument used in the initial test was the same as the performance instrument used in the final test. The results of the study stated that the average result of students' problem-solving abilities using project-based portfolio instruments at SD Negeri 074051 Sisarahili in the 2025/2024 academic year was 83.7, classified as very good, while using the lecture method obtained 54.4, classified as sufficient.