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All Journal Cakrawala Pendidikan Jurnal Elemen Edumatica: Jurnal Pendidikan Matematika
Supiat Supiat
Universitas Muhammadiyah Prof. DR. HAMKA
Education Mathematics Other

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PRE-SERVICE SECONDARY MATHEMATICS TEACHERS’ UNDERSTANDING OF ABSOLUTE VALUE Tian Abdul Aziz; Supiat Supiat; Yohanes Soenarto
Jurnal Cakrawala Pendidikan CAKRAWALA PENDIDIKAN, VOL. 38, NO. 1, FEBRUARY 2019
Publisher : LPMPP Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (530.383 KB) | DOI: 10.21831/cp.v38i1.21945

Abstract

This study aims to give a comprehensive account of pre-service secondary mathematics teachers’ understanding of absolute value. Thirty two-item absolute value understanding test was developed and administered to thirty-eight students attending mathematics education department at one private university in Jakarta City, Indonesia. Five of them were selected purposively and interviewed to gain deep information and confirm their written responses in the test. We find that most participants struggled with the absolute value task. There are inconsistencies of the definition of absolute value expressed by them. Besides, typical mistakes made are: (a) removal of absolute value bars; (b) focus heavily on rules; (c) conversion of absolute value bars to parentheses; (d) exclusion of number inside absolute value bars; (e) poor algebraic manipulation; and (f) inability to draw absolute value graph. Based on the findings, the most common cause of mistakes made by the participants is didactical contract in mathematics teaching and learning. Limitation and implications of the study are presented.
Pengaruh Pembelajaran Kooperatif Tipe STAD dengan Bantuan Website terhadap Kemampuan Pemahaman Konsep Geometri Siswa Kelas VIII Khoerul Umam; Supiat supiat
Jurnal Elemen Vol 5, No 2 (2019): July
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/jel.v5i2.1297

Abstract

This study aims to determine the differences in STAD type cooperative learning on geometry material integrated with the website www.fooplot.com. The subject of this study was a private junior high school in Bekasi, which is consisted of 31 male students and 40 female students. This study uses a quasi-experimental design method. Data from the research will be analyzed using descriptive statistics. The results of the study have shown that learning mathematics using a website has assisted students to improve their understanding of geometric concepts. The learning with the website has supported students to study independently outside of school hours. Website applications can encourage students to examine student work independently.
Kemampuan Numerasi Peserta Didik Dalam Menyelesaikan Masalah Aljabar Ditinjau dari Gender Shiska Putri Astuti; Supiat Supiat
Edumatica : Jurnal Pendidikan Matematika Vol 13 No 02 (2023): Edumatica: Jurnal Pendidikan Matematika
Publisher : Program Studi Pendidikan Matemarika PMIPA FKIP Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/edumatica.v13i02.26464

Abstract

Numeracy is a skill in using various kinds of symbols related to basic mathematics. Numerical ability is important to be applied in teaching and learning activities in schools to be able to solve math problems. The purpose of this study was to determine the numeracy skills of male and female students in solving algebra problems. The research method uses qualitative methods with a descriptive approach. The subject taking technique used purposive sampling, the subject consisted of 3 male students and 3 female students. Data collection techniques in this study used written tests, interviews, and documentation. The results of this study indicate that the numeracy skills of male and female students with a high level of ability are able to analyze information, make and carry out solving steps, and are able to draw conclusions about answers correctly. Male students with moderate ability levels are able to make and carry out completion steps, and are able to make conclusions about answers correctly. Female students with moderate ability levels are able to make and carry out solving steps. Male students with a low level of ability are only able to make steps for completion but have not been able to take steps for completion, female students with low levels of ability are only able to analyze the information in the problem. Based on this analysis it can be concluded that the numeracy skills in solving algebra problems in male and female students are different.
Co-Authors Khoerul Umam Shiska Putri Astuti Tian Abdul Aziz Yohanes Soenarto