Improving understanding of the concept of geometric transformation and mathematical self-efficacy through cikadu pandeglang batik motifs

This research is based on the low ability to understand concepts and self-efficacy. This study aims to determine the difference in students' ability to understand concepts and self-efficacy after using ethnomathematics-based learning with conventional learning and to explain the ethnomathematical elements contained in the Cikadu Pandeglang batik motif. This study uses a Quasi Experimental experimental design, namely The Nonequivalent posttest-control group Design. The test data collection technique using a concept understanding posttest of 4 questions of non-self-efficacy data contains 20 statements, and the analysis of test data used by normality tests, homogeneity tests and hypothesis tests, and non-test data is analysed by the Likert scale test. The results of the study showed that there was a difference in understanding of concepts and self-efficacy based on the posttest and questionnaire given. In this study, it can be concluded that there is a difference in students' understanding of concepts and self-efficacy after using ethnomathematics-based learning with conventional learning. Keywords: Concept Of Geometric Transformation, Mathematical Self-Efficacy, Cikadu Pandeglang Batik Motifs