Peningkatan kemampuan pemecahan masalah matematis siswa SMP melalui model problem based learning: Studi kuasi eksperimen pada materi bilangan bulat

Yeyen Nuraeni (IKIP Siliwangi)
Indah Puspita Sari (IKIP Siliwangi)
Risma Amelia (IKIP Siliwangi)

JPMI (Jurnal Pembelajaran Matematika Inovatif)
Vol. 9 No. 3 (2026): JPMI

This research examines the impact of the Problem-Based Learning (PBL) model on students' mathematical problem-solving proficiency in the context of integers. Adopting a quasi-experimental design, 54 seventh-grade students were assigned to either an experimental or control group. Statistical analysis—including normality, homogeneity, N-gain, and independent t-tests—indicated that the experimental group significantly outperformed the control group (N-gain of 0.84 vs. 0.54; p < 0.05). These findings suggest that implementing the PBL model provides a more effective pedagogical alternative to conventional methods for improving students' mathematical problem-solving skills.