This study aims to: 1) find valid, practical and effective mathematics learning media developed with the Geogebraassisted Problem Based Learning model; 2) describe the improvement of mathematical creative thinking ability of class XI students of SMA Negeri 1 Batang Kuis by using mathematics learning media developed with the Geogebra-aided Problem Based Learning model. This type of research is development research (development research) that uses a 4-D development model. This research was conducted through two stages, namely the stage of developing learning media based on Geogebra-assisted Problem Based Learning with Thiagarajan 4-D models, and the stage of testing the learning media of mathematics in class XI MIA 1 and XI MIA 3 SMA Negeri 1 Batang Kuis. From the results of the trial I and trial II obtained valid mathematics learning media according to experts. Based on the results of the analysis of the data obtained shows that the learning media based on Geogebra-assisted Problem Based Learning meets the practical, effective, and can improve mathematical creative thinking abilities.