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All Journal JIPMat (Jurnal Ilmiah Pendidikan Matematika) MATEMATIKA DAN PEMBELAJARAN JKPM (Jurnal Kajian Pendidikan Matematika) Vygotsky: Jurnal Pendidikan Matematika dan Matematika JPMI (Jurnal Pembelajaran Matematika Inovatif)
Prafianti, Rayinda Aseti
Universitas Islam Lamongan
Computer Science & IT Decision Sciences, Operations Research & Management Education Environmental Science Mathematics

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ANALYSIS OF STUDENT ERROR IN SOLVING THE FUNDAMENTAL METHOD OF COUNTING BASED ON NEWMAN’S THEORY Rayinda Aseti Prafianti; Rachman Arief
MATEMATIKA DAN PEMBELAJARAN Vol 10, No 1 (2022): MATEMATIKA DAN PEMBELAJARAN
Publisher : IAIN Ambon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33477/mp.v10i1.2846

Abstract

The purpose of this study was to find out: (1) what types of errors were made by students in solving questions on the fundamental method of counting, (2) what factors caused students to make mistakes in solving questions on the fundamental method of counting. This study used descriptive qualitative method. The subject of this research is the first semester of Informatics Engineering students. Data collection using test and interview methods. Data analysis techniques include the stages of data reduction, data presentation, and verification and drawing conclusions. In this study, student errors were analyzed based on Newman's five error indicators, (a) errors in reading questions, (b) errors in understanding questions, (c) errors in process transformation, (d) errors in process skills, and (e) errors in write down the final answer. Based on the results of the analysis, it was found that the types of errors made by Informatics Engineering students in solving the questions of the fundamental method of counting were three, namely (1) errors in receiving information including errors in determining what was asked the cause was not being careful in reading the questions, (2) errors related concepts include: (a) errors in using permutation and combination formulas. The reason is that students cannot understand the meaning of the problem, when to use permutations and when to use combinations. And (3) errors in counting, the cause is because students are not careful.
Kepraktisan dan Keefektifan Lembar Kerja Siswa Materi Lingkaran Berbasis Pendekatan Matematika Realistik Rayinda Aseti Prafianti; Elly Anjarsari; Amandanisa Ramadhani
JKPM (Jurnal Kajian Pendidikan Matematika) Vol 7, No 2 (2022): JKPM (Jurnal Kajian Pendidikan Matematika)
Publisher : Universitas Indraprasta PGRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/jkpm.v7i2.12797

Abstract

Tujuan dari penelitian ini untuk mendeskripsikan kepraktisan dan keefektifan LKS materi lingkaran yang dikembangkan. Penelitian ini dilaksanakan pada tahun 2020 dengan melibatkan siswa SMPN 1 Sukodadi kelas VIII. Penelitian ini menggunakan model Plomp yang terdiri dari tiga fase, yakni fase penelitian awal, fase pembuatan prototipe, dan fase penilaian. Instrumen yang digunakan dalam penelitian ini adalah angket respon siswa dan tes kemampuan pemecahan masalah matematis. Dari hasil angket respon siswa diperoleh bahwa semua aspek terkategori baik (aspek manfaat 74,58%, aspek kemudahan penggunaan 75%, dan aspek kemenarikan sajian 73,96%) sehingga LKS materi lingkaran yang dikembangkan memenuhi aspek kepraktisan. Selanjutnya dari hasil tes kemampuan pemecahan masalah matematis diperoleh bahwa 80% siswa telah mencapai ketuntasan belajar klasikal, yakni mendapatkan skor  sehingga LKS materi yang dikembangkan memenuhi aspek keefektifan. Hasil tersebut menunjukan bahwa LKS yang dikembangkan layak digunakan untuk melatihkan kemampuan pemecahan masalah matematis siswa.
STUDENTS' GEOMETRY THINKING ON CIRCLE MATERIAL BASED ON VAN HIELE'S THEORY Rayinda Aseti Prafianti; Novitasari Novitasari; Dian Novi Ambarwati
MATEMATIKA DAN PEMBELAJARAN Vol 10, No 2 (2022): MATEMATIKA DAN PEMBELAJARAN: ETHNOMATEMATICS AND TEACHING PROCESS
Publisher : IAIN Ambon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33477/mp.v10i2.3455

Abstract

The purpose of this study was to describe students' geometric thinking skills on circle material based on Van Hiele's theory (Visualization, Analysis, Informal Deduction, Deduction, Rigor). The subjects of this study were 3 students of class IX-A SMP Hang Tuah 4 Surabaya based on their initial mathematical abilities (high, medium, and low). The initial mathematical ability data was obtained from data on report cards for the even semester of the 2021-2022 academic year and based on the considerations of the mathematics teacher for class IX-A. This type of research is descriptive qualitative research. Collecting data in this study used tests and interviews. The test instrument used in this study was a circular geometry test in the form of mathematical questions with circle material arranged based on the Van Hiele indicator without stage 4 (Rigor) with the consideration that the research was conducted in class IX SMP so students have not been able to understand the material at stage 4 (rigor). Student with high initial mathematical abilities, geometric thinking abilities is already at stage 2 (informal deduction). Student with medium mathematical abilities, geometric thinking skills is at stage 2 (informal deduction). Student with low mathematical abilities, geometric thinking skills is at stage 0 (visualization).
Analysis of Mathematical Instruction Barriers in Terms of Developing Students' Mathematical Reasoning Rahma Nasir; Uncok Manigor Jokkas Siahaan; Rayinda Aseti Prafianti
Vygotsky: Jurnal Pendidikan Matematika dan Matematika Vol 5 No 1 (2023): Vygotsky: Jurnal Pendidikan Matematika dan Matematika
Publisher : Universitas Islam Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30736/voj.v5i1.723

Abstract

This study aims to analyze the difficulty of teachers in implementing learning that focuses on improving students' mathematical reasoning abilities. The study was a descriptive study. Data were collected via an online form that included open-ended questions. Data were collected from 93 mathematics teachers. Data were analyzed by coding qualitative data using spreadsheet in Microsoft Excel. The categories were derived from the participants’ own words or phrases. The results showed that 81.2 percent of respondents stated that the difficulty teachers experience to improve students' mathematical reasoning abilities is the lack of motivation and disengagement of students and other difficulties. This research also presents alternative solutions that can be practiced by teachers in their respective classes.
Analysis of Student's Creative Thinking Ability on Arithmetic Sequences in the Lesson Study Framework Rayinda Aseti Prafianti; Novitasari Novitasari; M Ulul Albab; Dian Novi Ambarwati
Vygotsky: Jurnal Pendidikan Matematika dan Matematika Vol 5 No 1 (2023): Vygotsky: Jurnal Pendidikan Matematika dan Matematika
Publisher : Universitas Islam Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30736/voj.v5i1.700

Abstract

This research aims to determine the creative thinking ability of students in arranging and solving contextual problems on arithmetic sequence. This research is a descriptive quantitative study through a Lesson Study framework with a subject of 18 students of the Mathematics Education study program at the Islamic University of Lamongan. The instruments in this study include attitude assessment sheets used to measure student activity in participating in learning and Student Worksheets used to measure students' creative thinking ability in arranging and solving contextual problems on arithmetic sequences. The results of the analysis show that the average score of student activities during learning is 85.13% while the average score of students' creative thinking ability is 71.875% in the Enough category.
PENDEKATAN INKUIRI BERBASIS ETNOMATEMATIKA: ANALISIS KEMAMPUAN BERPIKIR KREATIF MATERI BANGUN DATAR Novitasari Novitasari; Rahma Febriyanti; Elly Anjarsari; Rayinda Aseti Prafianti; Erra Noer Rohmania Aishwaray
JPMI (Jurnal Pembelajaran Matematika Inovatif) Vol 6, No 2 (2023): Maret
Publisher : IKIP Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/jpmi.v6i1.14383

Abstract

Creative thinking is one of the most important aspects of learning, with creative thinking students can develop their abilities in every material being taught. This study aims to describe students' creative thinking skills in learning using an ethnomathematical-based inquiry learning model on two-dimensional figure. This research is a qualitative descriptive study. The subjects of this study were 9th grade students of junior high school, which amounted to 15 people. Data collection techniques used in the form of test-based interviews and questionnaires. The data obtained were then analyzed using data analysis techniques with the stages of condensing data, data display, and conclusions drawing. The results showed that each group had different levels of creative thinking ability. The results of this study indicate that each group has a different level of creative thinking ability. There are two groups that have the ability to think creatively at level 3 (creative) which is indicated by the fulfillment of two components of creative thinking ability, namely fluency and flexibility. Meanwhile, one other group has a level of creative thinking ability in the quite creative category (level 2) which only fulfills one component of creative thinking ability, namely flexibility.
VALIDITAS BUKU AJAR MATEMATIKA SMP SEBAGAI PENGUAT ASESMEN KOMPETENSI MINIMUM DENGAN KONTEKS SOSIAL BUDAYA JAWA TIMUR Rayinda Aseti Prafianti; Nur Ilmayasinta; Ifroha Anita Silvia
JIPMat Vol 8, No 2 (2023)
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/jipmat.v8i2.16380

Abstract

Tujuan penelitian ini adalah untuk mengetahui validitas buku ajar matematika SMP sebagai penguat Asesmen Kompetensi Minimum (AKM). Pengembangan buku ajar ini menggunakan model Plomp yang terdiri dari fase pendahuluan, fase prototipe, dan fase evaluasi. Uji validitas dilakukan oleh validator ahli materi dan validator ahli media. Validator ahli materi terdiri dari dosen Pendidikan Matematika Universitas Islam Lamongan dan guru matematika SMP sedangkan validator ahli media terdiri dari dosen Pendidikan Matematika Universitas Islam Lamongan dan dosen Sistem Informasi Institut Teknologi Adhi Tama Surabaya. Instrumen penelitian berupa angket validasi yang selanjutnya diolah menggunakan teknik analisis kuantitatif. Aspek yang dinilai dalam validasi ahli materi meliputi aspek kelayakan isi, penyajian, dan bahasa, sedangkan aspek yang dinilai dalam validasi ahli media meliputi kelayakan kegrafikan. Hasil penelitian menunjukkan bahwa (1) aspek kelayakan isi sebesar 3,6 (valid), aspek kelayakan penyajian sebesar 3,5 (valid), aspek kelayakan bahasa sebesar 3,6 (valid), rata-rata penilaian ahli materi sebesar 3,6 (valid), (2) nilai validasi pada indikator ukuran buku ajar sebesar 3,9 (valid), indikator desain sampul buku ajar sebesar 3,7 (valid) dan indikator desain isi buku ajar sebesar 3,6 (valid). Rata-rata penilaian ahli media sebesar 3,7 (valid).
Co-Authors Amandanisa Ramadhani Anjarsari, Elly Dian Novi Ambarwati Erra Noer Rohmania Aishwaray Ifroha Anita Silvia Ilmayasinta, Nur M. Ulul Albab Novitasari Novitasari Rachman Arief Rahma Febriyanti Rahma Nasir Uncok Manigor Jokkas Siahaan