Jozua Sabandar
Universitas Pendidikan Indonesia, Bandung

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ENHANCING STUDENTS' COMMUNICATION SKILLS THROUGH TREFFINGER TEACHING MODEL Idrus Alhaddad; Yaya S. Kusumah; Jozua Sabandar; Jarnawi A. Dahlan
Journal on Mathematics Education Vol 6, No 1 (2015)
Publisher : Department of Doctoral Program on Mathematics Education, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (263.014 KB) | DOI: 10.22342/jme.6.1.1856.31-39

Abstract

This research aims to investigate, compare, and describe the achievement and enhancement of students' mathematical communication skills (MCS). It based on the prior mathematical knowledge (PMK) category (high, medium and low) by using Treffinger models (TM) and conventional learning (CL). This research is an experimental study with the population of all students of Mathematics Education Department who took Discrete Mathematics subject matter of one university in the city of Ternate. The results show that (1) the achievement and enhancement of MCS  students that used  TM are higher than the students learning using CL; (2) Based on the categories of PMK, the achievement and enhancement of MCS of students using TM are also higher than those learning with CL; and (3) There was no interaction effect between learning (TM and CL) and PMK to the achievement and enhancement of MCS of the students.Keyword: Communication Skills, Prior Mathematical Knowledge, Treffinger Model
MATHEMATICAL CRITICAL THINKING ABILITY THROUGH CONTEXTUAL TEACHING AND LEARNING APPROACH Kurniati Kurniati; Yaya S. Kusumah; Jozua Sabandar; Tatang Herman
Journal on Mathematics Education Vol 6, No 1 (2015)
Publisher : Department of Doctoral Program on Mathematics Education, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22342/jme.6.1.1901.53-62

Abstract

This research aimed to examine the effect of the application of contextual teaching and learning (CTL) approach to the enhance of mathematical critical thinking ability (MCTA) of Primary School Teacher Students (PSTS). This research is an experimental study with the population of all students PSTS who took algebra subject matter of one  university in the city of Bogor. The results showed: (1) the increase of MCTA of student who receive CTL better than students who receive TTL; (2) There are differences in the increase MCTA between students in groups of high MPA, medium MPA, and low MPA, both the student who received the CTL and TTL; and (3) There is no interaction between learning factors (CTL and TTL) with MPA (high, medium and low) toward the enhance of MCTA.Keywords: Critical Thinking Ability in Mathematics, Contextual Teaching and Learning Approach, Prior Mathematical Ability DOI: dx.doi.org/10.22342/jme.61.53
THE IMPACT OF PROBLEM-BASED LEARNING APPROACH TO SENIOR HIGH SCHOOL STUDENTS' MATHEMATICS CRITICAL THINKING ABILITY Reviandari Widyatiningtyas; Yaya S. Kusumah; Utari Sumarmo; Jozua Sabandar
Journal on Mathematics Education Vol 6, No 2 (2015)
Publisher : Department of Doctoral Program on Mathematics Education, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (551.385 KB) | DOI: 10.22342/jme.6.2.2165.107-116

Abstract

The study was report the findings of an only post-test control group research design and aims to analyze the influence of problem-based learning approach, school level, and students' prior mathematical ability to student's mathematics critical thinking ability. The research subjects were 140 grade ten senior high school students coming from excellent and moderate school level. The research instruments a set of mathematical critical thinking ability test, and the data were analyzed by using two ways ANOVA and t-test. The research found that the problem-based learning approach has significant impact to the ability of students' mathematics critical thinking in terms of school level and students' prior mathematical abilities. Furthermore. This research also found that there is no interaction between learning approach and school level, and learning approach and students' prior mathematics ability to students' mathematics critical thinking ability.
OPEN-ENDED APPROACH: AN EFFORT IN CULTIVATING STUDENTS' MATHEMATICAL CREATIVE THINKING ABILITY AND SELF-ESTEEM IN MATHEMATICS Abdul Fatah; Didi Suryadi; Jozua Sabandar; Turmudi Turmudi
Journal on Mathematics Education Vol 7, No 1 (2016)
Publisher : Department of Doctoral Program on Mathematics Education, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (125.703 KB) | DOI: 10.22342/jme.7.1.2813.9-18

Abstract

The present study aims at examining the use of open-ended approach in cultivating senior high school students' mathematical creative thinking ability (MCTA) and self-esteem (SE) in mathematics viewed from school category. The subjects of this research were the students grade XI at three schools; high, middle and low category in Kota Serang, Banten Province. In every school category, two classes were chosen; one class was the experimental group which was taught by open-ended approach, while another class was a control group which was taught by conventional way. This quasi-experimental research employed MCTA test and SE in mathematics scale as the instruments. In general, the research result shows that the MCTA improvement and SE level of the students who are taught by open-ended approach is better than those who are taught conventionally. The results of students' MCTA and SE viewed from school category will be further discussed.Keywords: mathematical creative thinking ability, self-esteem, open-ended approach