<![CDATA[The purpose of this study was to describe how the application of contextual teaching and learning approach in improving students' mathematical connection ability at SMAN 1 Lingsar. This type of research is a classroom action research consisting of two cycles, each cycle consists of four stages, namely planning, action, observation and reflection. The subjects in this study were students of class X IPA 1 SMAN 1 Lingsar which amounted to 37 people consisting of 20 women and 17 men. Data collection was done by using evaluation test (post-test) which includes indicators of students' mathematical connection ability, namely connections between mathematics topics and connections between mathematics in everyday life. The test results of students' mathematical connection ability in cycle I with a percentage of classical completeness of 51.72% and increased in cycle II by 65.62% which was measured using two indicators, so it can be said that there was an increase in students' mathematical connection ability from cycle I to cycle II. Although it did not meet the criteria for classical completeness of 70%, this research was stopped in cycle II due to time constraints and school conditions that had begun to carry out even semester final exams.Keywords: Contextual Teaching and Learning approach and mathematical connection ability]]>
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