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All Journal Jurnal S2 Pendidikan Matematika Community Empowerment
Rima Aksen Cahdriyana
Prodi Magister Pendidikan Matematika, Pascasarjana, FKIP – UNS
Arts Humanities Education Mathematics Public Health Social Sciences

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REPRESENTASI MATEMATIS SISWA KELAS VII DI SMP N 9 YOGYAKARTA DALAM MEMBANGUN KONSEP SISTEM PERSAMAAN LINEAR DUA VARIABEL Cahdriyana, Rima Aksen; Sujadi, Imam; Riyadi, Riyadi
Jurnal Pembelajaran Matematika Vol 2, No 6 (2014): Pembelajaran Matematika
Publisher : Jurnal Pembelajaran Matematika

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (232.967 KB)

Abstract

Abstract: The purpose of this study was to describe the preference of using of mathematical representations form of the seventh grade students of SMP 9 Yogyakarta who have high ability in developing the concept of a Systems of Linear Equations in Two Variables (SLETV) and describing the characteristics of the use of such mathematical representations form. This research was categorized as a qualitative case study approach. The subjects of this study were 6 (six) students of seventh grade of SMP Negeri 9 Yogyakarta who have high ability. Data in this study were the use of mathematical representation forms in developing concepts of SLETV that obtained from observation and interview-based tasks. The data were analyzed into three categories of SLETV developing concepts: 1) stating SLETV definition and SLETV’s solution definition; 2) using the concept SLETV in everyday life; and 3) solving the problem of SLETV. The use of students’ mathematical representation that includes a symbolic representation, a verbal representation, and a visual representation were be seen by each category. The validity of the data being used in this study was triangulation time, through the first observational data and task-based interview, and the second observational data and task-based interviews. The same consistent data were categorized as valid data that illustrate the use of students’ mathematical representation in developing  concepts of SLETV. The results of this study are as follows. 1) The preference of the use of students’ representation forms in stating SLETV definition and solution sets by using verbal representation. Characteristics of using this representation are by mentioning SLETV’ characteristics (for SLETV definition), and by mentioning the characteristics SLETV solution (for solution sets); 2) Preference of the use of students representation forms in using SLETV concept in the daily life is by using symbolic representation. The characteristics of the use of representation are: a) by changing the description of the conditions that are known to be an equation form; b) by making a conjecture to find the right answer; c) by clarifying the rightness of the conjecture that has been made to determine the correct answer; d) by performing algebra arithmetic operations, and arithmetic operations to determine the right answer. 3) The preference of the use of students’ representation forms in finishing SLETV problem is by using  symbolic representation. The characteristics of using this representation are: a) by changing the shape that was known as an equation form; b) by manipulating the form of the equations that have been made to get the right answer easier; c) by making a conjecture to find the right answer; d) by clarifying the rightness of the conjecture that has been made to determine the correct answer; e) by doing algebra arithmetic operations and arithmetic operations to determine the right answer.Keywords : Developing  of concepts, Systems of Linear Equations in Two Variables (SLETV), mathematical representation.
Pendampingan Keterampilan Guru di SMP Muhammadiyah Al-Manar dalam Penggunaan Google Classroom Priwantoro, Soffi Widyanesti; Fahmi, Syariful; Cahdriyana, Rima Aksen; Rianto, Rianto
Community Empowerment Vol 6 No 2 (2021)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (416.2 KB) | DOI: 10.31603/ce.4426

Abstract

Pandemi yang melanda di tahun 2020 ini memaksa sekolah untuk merubah proses pembelajaran dari luring menjadi daring. Beberapa sekolah terlihat belum siap menghadapi proses pembelajaran secara daring, sehingga menggunakan platform seadanya yang mengakibatkan beberapa guru mengalami kesulitan dalam mengelola kelas. Hal ini juga dialami oleh SMP Muhammadiyah Al-Manar, sehingga diperlukan diadakan kegiatan pelatihan dan pendampingan untuk meningkatkan kemampuan guru dalam teknologi khususnya penggunaan platform e-learning yaitu google classroom. Kegiatan Pengabdian kepada Masyarakat (PkM) ini bertujuan agar guru yang masih aktif di SMP Muhammadiyah Al-Manar dapat meningkatkan keterampilan penggunaan platform google classroom untuk mendukung pembelajaran daring selama pandemi berlangsung. Kegiatan PkM dilaksanakan selama bulan Oktober-Desember 2020 dengan metode ceramah, pelatihan, workshop dan pendampingan yang dilakukan oleh tim PkM. Dari kegiatan tersebut diperoleh peningkatan indikator keterampilan penggunaan google classroom yaitu mengenal fitur google classroom dari 58,3% naik menjadi 70,8%, kemampuan upload file dari 41,67% naik menjadi 69,4%, upload video dari 54,12% menjadi 69,4%, upload tugas dari 54,12% naik menjadi 69,4% dan penilaian tugas serta umpan balik naik dari 50% ke 72,2%.
Co-Authors Imam Sujadi Rianto Rianto Riyadi Riyadi Soffi Widyanesti Priwantoro, Soffi Widyanesti Syariful Fahmi, Syariful