Development of Teaching Materials Based on Ethnomathematics on Woven Fabrics (Tembe Nggoli) Mbojo Tribe Society for Junior High School Students Sowanto and Edi Mulyadin
STKIP Bima
sowantos[at]gmail.com
Abstract
This research is based on the absence of teaching materials about the concept of geometry that is able to facilitate the students connecting the culture, especially Tembe Nggoli which is one of the woven cloth of mbojo-NTB with the concept of mathematics. Ethnomathematics is a mathematical bridge with culture, and ethnography recognizes the different ways of doing mathematics in community activities. The product of this study is to produce teaching materials that can be in the form of student worksheets. The method used is the research design (design research) which includes: (1) preliminary design, in this phase, is made Hypothetical Learning Trajectory (HLT) hypothesis learning; (2) experiments, in this phase existing designs are tested to students; (3) retrospective analysis, in this phase the researchers compare the HLT with the actual student learning process. The results of this research showed that task 1 which was presented in teaching materials by considering learning obstacle and preliminary study able to facilitate students to define the properties of triangles based on their angle. The other tasks presented in the teaching material by considering learning obstacle and preliminary studies were able to facilitate each student to identify the properties of squares, parallelogram, and rhombus.
Keywords: Teaching Materials, Ethnomathematics, Design Research
