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Journal : Jurnal Infinity

THE STUDENTS’ MATHEMATICAL ABSTRACTION ABILITY THROUGH REALISTIC MATHEMATICS EDUCATION WITH VBA-MICROSOFT EXCEL Fitriani, Nelly; Suryadi, Didi; Darhim, Darhim
Jurnal Infinity Vol 7, No 2 (2018): Volume 7 Number 2, INFINITY
Publisher : STKIP Siliwangi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (830.323 KB) | DOI: 10.22460/infinity.v7i2.p123-132

Abstract

The purpose of this research is to analyze the level of abstraction mathematical ability of the students through learning using Realistic Mathematics Education (RME) with Visual Basic Application (VBA) for Microsoft Excel. This research uses a descriptive qualitative method and the subject of this study is junior high school students of grade 9th in one school in Ngamprah as many as 35 students. One of the instruments in this study is the abstraction test. Results show that as many as 65.71% of students are in the first level of Perceptual Abstraction. As many as 57.14% of students are in the second level of Internalization.  As many as 31.43% of students are in the third level of Interiorization, and as many as 17.14% of students are at the last level, namely Second Level of Interiorization. Overall, the sample in this study can be categorized into four levels of abstraction.
UNDERGRADUATE STUDENTS SELF-CONCEPT AND THEIR MATHEMATICS PROCEDURAL KNOWLEDGE: THE RELATIONSHIP Afgani, Muhammad Win; Suryadi, Didi; Dahlan, Jarnawi Afgani
Jurnal Infinity Vol 8, No 1 (2019): Volume 8 Number 1, Infinity
Publisher : STKIP Siliwangi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/infinity.v8i1.p99-108

Abstract

This study aimed to explain the relationship between self-concept and mathematics procedural knowledge among undergraduate students of mathematics education. This study investigated the affective and cognitive aspect of students in the learning of mathematics. The method in this study surveyed with non-probability sampling technique. The subjects were 133 undergraduate students of mathematics education from public and private university in Palembang, Indonesia. 66 of them were undergraduate students in public university. The rest of them were undergraduate students in a private university. The instruments that were used are questionnaire of self-concept and essay test of mathematics procedural knowledge. The result from the Spearman Rank Correlation showed Sig. = 0.006 < 0.05. From that result, we conclude that there is a significant relationship between undergraduate students’ self-concept and their mathematics procedural knowledge.
DEVELOPING A LOCAL INSTRUCTION THEORY FOR LEARNING COMBINATIONS Meika, Ika; Suryadi, Didi; Darhim, Darhim
Jurnal Infinity Vol 8, No 2 (2019): Volume 8 Number 2, Infinity
Publisher : STKIP Siliwangi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/infinity.v8i2.p157-166

Abstract

This research aims at developing local instruction theory for learning combinations by using Realistic Mathematics Education (RME). This research uses a design research approach, Hypothetical Learning Trajectory (HLT), developed from a series of activities to obtain a better understanding about combinations at Senior High School (SHS) students. Theoretical development is supported by an interactive process in designing learning activities, conducting teaching experiment and conducting retrospective analysis to contribute to combinations of Local Instruction Theory (LIT). An understanding of combinations emerges and develops during classroom learning activities. Qualitative analysis of teaching experiments shows that by using local instruction theory teaching materials that characterize RME students are able to develop their understanding about a combination.