This research aims to determine the effectiveness of the Problem-Based Learning model on the mathematical creative thinking abilities of fourth-grade students at SD N 1 Paningkaban. This research was quasi-experimental with a one-group pretest-posttest design. The research subjects were all 15 fourth-grade students at SD N 1 Paningkaban. Data were collected using tests, and data analysis was conducted using a manual t-test and the Paired Sample T Test formula with SPSS version 25. The hypothesis test result using the t-test obtained a