Abstract
Based on preliminary observations made at Junior High School IT Iqra 'Solok City, students' mathematical problem solving abilities were still low. The low ability of students to solve problems was due to the lack of learning media (lesson plan and worksheet) that are able to facilitate these problem solving abilities. Based on that problem, the development of learning media (lesson plan and worksheet) using the Contextual Teaching Learning (CTL) was needed. The purpose of this study was to create a mathematical learning media based on Contextual Teaching and Learning (CTL) to improve the problem solving skills of students in grade VIII that were valid, practical and effective. The development research model used was the Plomp development model. This model consisted of three stages, namely the initial investigation stage, the development stage or prototyping and the assessment stage. This research was the initial investigative stage.
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