Implementation of CTL Approach to Increase Understanding of the Concept of Operation of Addition and Subtraction of Integers by Using Learning Tools

Abstract

This study aims to determine students' difficulties in understanding the concept of operations of addition and subtraction of integers as well as to determine whether there is an increased understanding of the concept of students on the material using tools through CTL approach. The subjects were 19 students of the fifth grade of Primary School of 060851 Medan. From the post test, it was obtained that the number of students who achieve learning completeness was 5.26% with an average grade of 40.5. After granting an action, interview and observation, the concept understanding test was conducted . It turned out that an increasing of 78.95% with learning completeness of 84.21% with an average grade 71.57.

Keywords: CTL approach, Concept Understanding of Operation of Addition and Subtraction of Integer, Learning Tools.