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All Journal Math Didactic: Jurnal Pendidikan Matematika Indonesian Journal of Mathematics Education Journal of Mathematics Education and Science Ethnomathematics Journal
Adhetia Martyanti
Universitas Alma Ata
Arts Education Mathematics Social Sciences Other

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Analysis of Junior High School Students’ Errors in Solving Mathematical Problems for The Topic of Circle Arief Budi Wicaksono; Adhetia Martyanti
Indonesian Journal of Mathematics Education Vol 2, No 2 (2019): Indonesian Journal of Mathematics Education
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31002/ijome.v2i2.1888

Abstract

This research aims to determine the type and percentage of errors that junior high school students do in solving math problems on the subject of the circles. This research is an expost facto research.  The population of this study is all students of grade VIII of one of the junior high schools in Purworejo as many as 182 students. Then by randomly selecting from the entire student, selected as many as 94 students as research samples. Research instruments are used in the form of diagnostic tests. Based on the results of the research, the students’ errors have done in solving math problems on the topic of circle are errors in comprehension (16,93%), transformation (27,39%), operation (26,30%), and drawing conclusion (71,55%). So, the most dominant error done by grade VIII students of one of the junior high schools in Purworejo is an error in the drawing of conclusions. Based on the results of this study, teachers need to design more effective learning to minimize the errors that occur, especially errors in drawing conclusions.
ANALISIS VALIDITAS DAN PRAKTIKLITAS LEMBAR KERJA SISWA BERBASIS ETNOMATEMATIKA DALAM KONTEKS YOGYAKARTA Rino Richardo; Adhetia Martyanti; Suhartini Suhartini
Journal of Mathematics Education and Science Vol. 1 No. 2 (2018): Journal of Mathematics Education and Science
Publisher : Universitas Nahdlatul Ulama Sunan Giri Bojonegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (765.594 KB) | DOI: 10.32665/james.v1iOctober.41

Abstract

The purpose of this research was to develop and produce valid and practical Student Worksheet based on ethnomathematics of Yogyakarta context. The subjects of this research were teachers and students of SMP Negeri 1 Piyungan Yogyakarta class VII E. The collecting data were used validation questionnaire and practical questionnaire. The result showed that the worksheets were very valid and very practical. The validity rate was of 3,7, the practicality rate was 98% based on teachers assessment and rate was 82% based on students assessment. Penelitian ini bertujuan untuk mengetahui apakah Lembar Kerja Siswa (LKS) berbasis etnomatematika dalam konteks Yogyakarta memenuhi kriteria Valid dan Praktis. Subjek Penelitian ini adalah guru dan siswa SMP Negeri 1 Piyungan Yogyakarta kelas VII E. Pengumpulan data menggunakan angket validasi dan angket kepraktisan. Hasil penelitian menunjukkan bahwa LKS memenuhi kriteria sangat valid dan sangat praktis. Dengan rata-rata nilai validitas adalah 3,7, rata-rata nilai kepraktisan adalah 98% melalui penilaian guru serta rata-rata nilai kepraktisan adalah 82% melalui penilaian siswa.
Profile of the critical thinking skills of blind students in solving geometry problems based on academic ability Adhetia Martyanti; Suhartini
Math Didactic: Jurnal Pendidikan Matematika Vol 5 No 3 (2019)
Publisher : STKIP PGRI Banjarmasin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33654/math.v5i3.802

Abstract

This study aims to describe the critical thinking skills of blind students in solving geometry problems in terms of the level of academic ability. This research is qualitative research with a descriptive approach. The research subjects consisted of three blind students in class VIII MTsLB Yaketunis, Yogyakarta. Data was collected through tests of critical thinking skills and interviews. Triangulation is carried out as an effort to guarantee the validity of the data. Furthermore, the results of the study indicate that there are differences in the profile of the critical thinking abilities of blind students in solving geometry problems in terms of the level of academic ability. Blind students with high and moderate academic abilities show 3 and 1 of 5 indicators of critical thinking abilities, respectively. Whereas for blind students with low academic ability, indicators of critical thinking skills have not yet emerged. The results of this study are expected to be a consideration for teachers in designing learning geometry that can facilitate the development of students' critical thinking skills of the blind
Learning mathematics through Islam Nusantara culture: An etnomathematics study in Indonesia Rino Richardo; Ahmad Anis Abdullah; Adhetia Martyanti; Dyasih Alin Sholihah; Widha Nurshanti
Ethnomathematics Journal Vol 1, No 1 (2020): March
Publisher : Universitas negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (385.918 KB) | DOI: 10.21831/ej.v1i1.33129

Abstract

This study discusses the study of Islam Nusantara culture in mathematics learning. This research uses library method. The data obtained is a publication of research articles in a scientific journal. The article analyzed includes three stages, namely organize, synthesize, and identify. The results of data analysis show that (1) culture of Islam Nusantara can be used to teach a concept in learning mathematics, (2) this culture can be used as material in strengthening character education, (3) and this culture can develop the ability of cultural literacy.
Co-Authors Ahmad Anis Abdullah Arief Budi Wicaksono Dyasih Alin Sholihah Rino Richardo Suhartini Suhartini Suhartini Widha Nurshanti