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Widodo, Sri Adi; Turmudi; Dahlan, Jarnawi Afgani; Harini, Esti; Sulistyowati, Fitria – International Journal of Evaluation and Research in Education, 2020
The purpose of this study was to confirm the factors that influence the sociomathematics norm. The method used in this research is the ex post facto. The subjects in this study were seventh-grade junior high school students in the city of Yogyakarta, Indonesia (264 students) taken by cluster random sampling. The instrument used was a…
Descriptors: Factor Analysis, Mathematics Instruction, Social Attitudes, Junior High School Students
Fuadiah, Nyiayu Fahriza; Suryadi, Didi; Turmudi – International Journal of Instruction, 2019
This study is a series of Didactical Design Research in prospective analysis stage to comprehensively identify some obstacles in learning negative integer in order to capture how the learning process used by teachers and how the impact on students in understanding the concept of negative numbers. This research is a case study administered to…
Descriptors: Foreign Countries, Barriers, Numbers, Mathematics Instruction
Fuadiah, Nyiayu Fahriza; Suryadi, Didi; Turmudi – International Education Studies, 2017
This study revealed how students' understanding of negative numbers and identified their difficulties related with the concept of integer and its counting operation as part of identifying epistemological obstacles about negative numbers. Even though teachers have explained counting operation procedure of integer, but there was concept…
Descriptors: Mathematical Concepts, Numbers, Number Concepts, Qualitative Research