This research is motivated by students' difficulties in understanding mathematical concepts, primarily due to the use of conventional, non-interactive, and monotonous learning media such as blackboards and textbooks. This leads to passive learning, boredom, and low motivation, which hinders the optimization of students' mathematical concept understanding. The study aims to determine the effect of Baamboozle learning media on the mathematical concept understanding of third-grade students at SDN Pamulang Indah. Using a quantitative quasi-experimental method with a Post-test Only Control Group Design, the research involved a population of 179 students. The sample consisted of class III C (n=35) as the experimental group and class III A (n=37) as the control group. The instrument used was a 10-item essay post-test, which was validated and found to be reliable (reliability score = 0.895). Data were analyzed using SPSS version 26. The results of normality and homogeneity tests showed a normal distribution (experimental class = 0.154, control class = 0.200, both > 0.05) and homogeneity (0.229 > 0.05). An independent t-test resulted in t = 5.160 with a significance value of 0.000 (< 0.05), leading to the rejection of H₀ and acceptance of Hₐ. This indicates that Baamboozle learning media significantly affects students' mathematical concept understanding, with the experimental class achieving a higher average score (32.00) than the control class (27.22). Therefore, Baamboozle has a positive influence on third-grade students' mathematical concept understanding at SDN Pamulang Indah.