The conceptual understanding of the student of STKIP YPM Bangko was still low. The learning process which was teacher-centered and the learning approaches which were varied were assumed as the causes of this problem. One of the effords done to overcome the problem was by applying Problem-Based Learning approach. This was a quasy experimental research which used Randomized Group Control Postest Only Design. The poluplation of the research was Mathemathics Education Students at STKIP YPM Bangko. The data was collected through a test, and then it was analyzed by using t-test and two ways anava. The result of research indicated that the conceptual understanding of the students having high or low learning independence taught by using PBL approach was better than that of students taught by using conventional learning.