THE DEVELOPMENT OF LEARNING DEVICE BASED CONTEXTUAL TEACHING LEARNING (CTL) ASSISTED AUTOGRAPH TO IMPROVE THE ABILITY OF PROBLEM SOLVING MATHEMATICS CLASS X SMA NEGERI 1 TELUKDALAM

Abstract

This research study aims to describe: 1) Validity learning devices CTL based with autograph aid; 2) practicality learning devices CTL with autograph aid; 3) effectiveness learning devices CTL with autograph aid; 4) increase problem solving skills by problem based learning model developed. This research is a research development (research and development). The development of CTL based learning used 4-D model which include define, design, develop, and disseminate. The results of the defining phase is used to design a learning instruments. Then this draft is validated and teste in classroom to see its practically and effectiveness. The tes is done in class X SMA Negeri 1 Telukdalam. This research used students in class XIA1 and XIA2. From this development obtained that; (1) learning instruments developed is valid criteria with the average validity total of lesson plan = 4.506, Student’s Book = 4.687, worksheet = 4.412. Test problem-solving abilities in valid categories with reliability of 0.87; 2) Learning intruments satisfy practice criteria based on (a) assessment of teachers' ability to implement excellent category learning; (b) assessment of students' ability to follow excellent category learning; 3) learning instruments is effective based on the results of student’s mathematical problem-solving skills tests meet the classical completeness, the achievement of the ideal percentage of time, and the results of questionnaire responses of students, 4) the increasing of problem solving skills of student’s from first to second test was 0.37 points with the classical learning completeness increase by 37,5%.

Keywords: Learning Tool, CTL approach, software autograph, 4-D Model Development, Mathematical Problem Solving Ability Students