# Implementation of Cooperative Model's Jigsaw to Improve Mathematic Ability of Students

## Abstract

The problem of this research is the low ability of mathematical connections due to the low ability of students to understand mathematical concepts. This research is a Classroom Action Research conducted at Husni Thamrin High School Medan. In the implementation of this research tools and research instruments have been developed. The results in cycle I show that: (1) the average test score of students' mathematical connection ability is 68.0 or there are 73% of the number of students who take the test have a level sis mathematical ability, (2) the level of active activity of students has not met the set ideal percentage of time, . In cycle II the results were obtained: (1) the average score of students' mathematical ability test was 73.0 or there were 86.6% of the number of students who took the test had a minimum level of students' mathematical ability in the sufficient category and 13.4% had a level students' mathematical are under the sufficient category, (2) the level of active activity of students fulfills the ideal percentage of time. In cycles I and II, concluded that implementation of jigsaw cooperative learning can improve students' mathematical ability.