The problem in this research is an attempt to improve the learners\u27 learning activities by using contextual teaching and learning model\u27s (CTL) in mathematic subjects at the three grade students in the Elementary School 21 Sungai Kakap. This research method is descriptive, in classroom action research, and the nature of this research is qualitative research, the research subjects are teacher and learners elementary school three grade students in the Elementary School 21 Sungai Kakap which consisted of 36 people in whole. The techniques used in this research were the technique of direct observation, documentary technique, and data collection tool were used as observation guidelines. The result based on observation by using contextual teaching and learning model\u27s (CTL) had improved learners learning activities. This shows that the hypothesis that stated the application of contextual teaching and learning model\u27s in mathematic lessons at the three grade in the Elementary School 21 Sungai Kakap can improve learners\u27 learning activities, accepted