<![CDATA[This research departs from the problem of lack of learning resources in the learning process. This resulted in students being lazy in participating in mathematics learning so that it had an impact on student learning outcomes. One way to overcome this problem is by having an innovation in learning mathematics, one of which is the use of Problem Based Learning (PBL) based mathematics modules. The purpose of this research is to develop a mathematical module based on Problem Based Learning (PBL) in learning mathematics that is valid and practical. This research is development research which consists of 3 stages, namely: the define stage, the design stage and the develop stage. This development research instrument uses validation sheets and questionnaires. The module was validated by 3 validators, namely 2 mathematics lecturers and 1 mathematics teacher. The results of the research show that the designed module is valid with a validity result of 71.38%. Then the mathematics learning module has been practically used with a practicality result of 78.86%.]]>
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