Pengembangan Perangkat Pembelajaran Kesebangunan Bangun Datar Berbasis Teori Van Hiele Untuk Meningkatkan Kemampuan Berpikir Tingkat Tinggi Siswa

Abstract

In implementing the 2013 curriculum, Higher Order Thinking Skills (HOTS) must be integrated into learning activities. Similarity are sub material of similarity and congruence that students must learn. In fact, the higher order thinking skills of junior high school students in similarity material is low. To overcome this problem, it is necessary to develop a learning materials for learning in the form of plane similarity according to the level of student thinking in geometry, which is based on Van Hiele's theory to improve students' higher-order thinking skills. Van Hiele's theory was chosen because it suggests the development of students' thinking in learning of geometry occurs through five levels sequentially so that learning devices can be developed according to the level of van Hiele students. The purpose of this research is to obtain a description of the learning materials of plane similarity based on van Hiele theory based on van Hiele theory to improve students' high-level thinking skills that are valid, practical, and effective. This type of research is a research development using the 4-D model proposed by Thiagarajan then simplified to a 3-D model. Validation of learning devices, participant observation, questionnaires, and tests are the data collection techniques used. The results showed that the RPP, LKS, and THB were said to be valid then, the learning materials was declared valid; the management of learning is said to be good, the overall evaluation on the validation sheet of the learning materials is stated to be used, and the percentage of active student activities at the second meeting and the third meeting respectively is 91.25% and 91.25% then, the learning kit is declared practical; and the percentage of positive responses of students by 71% and an increase in higher order thinking skills seen from the results of the N-Gain pretest and posttest of 0,728 categorized as high then, the learning device is declared effective. Keywords: learning materials, plane similarity, van hiele’s theory, higher order thinking skills.