Developing Cultural Context Teaching Material of Geometry with GeoGebra to Increase Students’ Higher-order Thinking Skill

Abstract

The purpose of this research is to develop teaching material of cultural context geometry with GeoGebra which is valid, practical and effective based on the theoretical reviews and its support to enhance higher-order thinking ability. This study is a research and development (R & D) that was developed by referring to ADDIE model. The samples are the student of Mathematics Education Department at Nusa Cendana University who consists of 40 students. The data were analyzed by descriptive statistics, n-gain, and one sample pretest-posttest test. The results showed that the teaching material was valid with the average of expert evaluations 4.55 or in the good criterion. Teaching material was practical with the average value of learning activities observation 4.3 or in the good category and the students' responses is 4.05 or in the good category, and teaching material was effective because it empirically can increase the higher-order thinking ability 0.52 or in the medium category. The teaching material of cultural context geometry with GeoGebra is a unification of local knowledge and technology integration that can be used in geometry learning in order to support students’ transition from elementary mathematical thinking level to advanced mathematical thinking