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Sari, Nenden Mutiara; Yaniawati, Poppy; Darhim; Kartasasmita, Bana G. – International Journal of Instruction, 2019
This study aimed to investigate the effects of different ways of presenting teaching materials on enhancing mathematical problem-solving abilities. This research was obtained using a quasi-experimental design with the non-equivalent control group design. The study population was all eighth graders enrolled in public junior high schools (SMP) in…
Descriptors: Problem Solving, Mathematics Instruction, Teaching Methods, Grade 8
Sari, Delsika Pramata; Darhim – Journal on Mathematics Education, 2020
The purpose of this study was to describe how to implement the REACT [Relating, Experiencing, Applying, Cooperating and Transferring] strategy to develop students' mathematical representation, reasoning, and disposition ability. This research was a descriptive study with a qualitative approach. The subject of this study was grade 8 junior high…
Descriptors: Mathematics Instruction, Teaching Methods, Mathematical Logic, Mathematics Skills
Kusumaningsih, Widya; Darhim; Herman, Tatang; Turmudi – Journal on Mathematics Education, 2018
The study aimed at improving students' algebraic thinking ability in the eighth-grade junior high school student through multiple representation strategies using realistic approach. The multiple representation strategies consist of orientation, exploration, internalization, and evaluation. This is a quasi-experimental study with nonrandomized…
Descriptors: Mathematics Achievement, Thinking Skills, Algebra, Grade 8
Sari, Delsika Pramata; Darhim; Rosjanuardi, Rizky – Journal on Mathematics Education, 2018
The purpose of this study was to investigate the errors experienced by students learning with REACT strategy and traditional learning in solving problems of mathematical representation ability. This study used quasi experimental pattern with static-group comparison design. The subjects of this study were 47 eighth grade students of junior high…
Descriptors: Mathematics Instruction, Teaching Methods, Grade 8, Junior High School Students