Pengembangan Booklet Materi Perbandingan Melalui Pendekatan Etnomatematika dalam Menunjang Disposisi Matematis Peserta Didik SMP

: The difficulty of applying proportion material can be seen from the low understanding and mathematical disposition of students. The need for proportion material booklet that pay attention to indicators of mathematical disposition for students because it provides convenience in presenting the materials, so that they are easy to learn. With an ethnomathematical approach, it’s hoped that it can help and maintain elements of local cultural wisdom, especially in Barito Kuala Regency, South Kalimantan, so that future generations will know the elements of local culture and learning is more meaningful and close to life. This study aims to describe the process and produce the development of ethnomathematical booklet in supporting the mathematical disposition of valid junior high school students, as well as knowing the practicality of booklet in supporting the mathematical disposition of students. This research uses a development method with a 4-D model but this research has reached the development stage (develop) with validation and analysis of disposition questionnaires and student responses. Validation was carried out by three validators and obtained 92.59% with very valid criteria. The average percentage of the aspect of the mathematical disposition indicator obtained is 74% which is in the strong criteria, meaning that through the ethnomathematics booklet it can support students to have a good mathematical disposition, while the average percentage of student responses is 82.38% which is included in the very strong criteria, strong means that the student's response is very good to the booklet given. Thus the booklet meets the criteria of validity and can be used to support the mathematical disposition of students.