<![CDATA[This study aims to determine the increase in mathematical communication skills of elementary students using the Problem Based Learning (PBL) approach by using ordinary learning, knowing whether the learning applied in the classroom is in accordance with the PBL approach, and also to determine students' understanding of mathematics subjects general, PBL approach and media-based mathematical communication skills of ice cream sticks as a support. The research method used in this study was quasi-experimental. The population of this study was class 1B students as the experimental class and class 1A as the control class. The research instruments used in this study consisted of test and non-test instruments consisting of 5 items about mathematical communication skills and 8 types of student worksheets. From the results of research and data analysis that has been done, it can be concluded that:(1) the achievement of mathematical communication skills of students who use the PBL approach is better than those using ordinary learning; (2) improving the mathematical communication skills of students who learn to use the PBL approach better than those who use ordinary learning.]]>
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