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All Journal Jurnal Pendidikan Matematika Journal on Mathematics Education (JME) Jurnal Karya Pendidikan Matematika
Ratu Ilma
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Education Mathematics

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PENGEMBANGAN SOAL-SOAL OPEN-ENDED MATERI LINGKARAN UNTUK MENINGKATKAN PENALARAN MATEMATIKA SISWA KELAS VIII SEKOLAH MENENGAH PERTAMA NEGERI 1O PALEMBANG Devi Emilya; Darmawijoyo Darmawijoyo; Ratu Ilma
Jurnal Pendidikan Matematika Vol 4, No 2 (2010)
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22342/jpm.4.2.316.

Abstract

Penelitian ini bertujuan untuk: (1) untuk menghasilkan soal-soal open-ended yang valid dan praktis pada materi lingkaran di SMP; (2) untuk melihat efek potensial soal-soal open-ended terhadap penalaran matematika siswa pada materi lingkaran di SMP. Penelitian ini merupakan penelitian pengembangan (development research). Subjek penelitian adalah siswa kelas VIII.2  SMP Negeri 10 Palembang sebanyak 35 orang. Pengumpulan data menggunakan wawancara, analisis dokumen, dan tes soal open-ended. Semua data yang dikumpulkan dianalisis secara deskriptif kualitatif. Hasil analisis data menyimpulkan bahwa (1) penelitian ini telah menghasilkan suatu produk soal open-ended materi lingkaran  untuk siswa kelas VIII SMP yang valid dan praktis. Valid tergambar dari hasil penilaian validator, dimana semua validator menyatakan sudah baik berdasarkan content, konstruk, dan bahasa.  Selain itu kevalidan soal open-ended ini tergambar setelah dilakukan analisis validasi butir soal pada siswa small group. Praktis tergambar dari hasil uji coba small group dimana sebagian besar siswa dapat menyelesaikan soal open-ended yang diberikan. (2) prototype soal open-ended yang dikembangkan memilki efek potensial yang positif terhadap penalaran siswa , hal ini terlihat dengan munculnya beragam solusi jawaban siswa, dan  pada tes pertama siswa berkategori baik dan sangat baik berjumlah 29 siswa, sedangkan pada tes kedua siswa berkategori baik dan sangat baik berjumlah 26 siswa. Kata Kunci: Penelitian Pengembangan, Soal Open-Ended, Lingkaran
Design Research on Mathematics Education: Investigating The Progress of Indonesian Fifth Grade Students' Learning on Multiplication of Fractions With Natural Numbers Nenden Octavarulia Shanty; Yusuf Hartono; Ratu Ilma; Dede de Haan
Journal on Mathematics Education Vol 2, No 2 (2011)
Publisher : Department of Doctoral Program on Mathematics Education, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (226.265 KB) | DOI: 10.22342/jme.2.2.749.147-162

Abstract

This study aimed at investigating the progress of students' learning on multiplication fractions with natural numbers through the five activity levels based on Realistic Mathematics Education (RME) approach proposed by Streefland. Design research was chosen to achieve this research goal. In design research, the Hypothetical Learning Trajectory (HLT) plays important role as a design and research instrument. This HLT tested to thirty-seven students of grade five primary school (i.e.SDN 179 Palembang). The result of the classroom practices showed that measurement (length) activity could stimulate students’ to produce fractions as the first level in learning multiplication of fractions with natural numbers. Furthermore, strategies and tools used by the students in partitioning gradually be developed into a more formal mathematics in which number line be used as the model of measuring situation and the model for more formal reasoning. The number line then could bring the students to the last activity level, namely on the way to rules for multiplying fractions with natural numbers. Based on this findings, it is suggested that Streefland's five activity levels can be used as a guideline in learning multiplication of fractions with natural numbers in which the learning process become a more progressive learning.Keywords: multiplication fractions with natural numbers, measurement (length) activity, design research, Hypothetical Learning Trajectory, model of, model for
Supporting First Grade Students Learning Number Facts Up To 10 Using A Parrot Game Zetra Hainul Putra; Darmawijoyo Darmawijoyo; Ratu Ilma; Jaap den Hertog
Journal on Mathematics Education Vol 2, No 2 (2011)
Publisher : Department of Doctoral Program on Mathematics Education, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22342/jme.2.2.776.163-172

Abstract

Knowing number facts up to 10 become crucial if we want students to solve addition and subtraction problems  using more abbreviated strategies. Otherwise, students will keep counting one-by-one until they get an answer. One of important number facts is number pairs that make ten because it is an important ‘benchmark’ that students will refer to constantly. Considering the important of number facts up to 10, we designed a parrot game activity to supports students learning process. We designed an instructional activity based on Realistic Mathematics Education (RME) approach. We tried this instructional activity with twenty seven first grade students in SDN 179 Palembang. As a result, we found that many first grade students were able to know number facts up to 10, but they still need models to support their thinking.Keywords: number facts up to 10, number pairs that make 10, and parrot game. DOI: http://dx.doi.org/10.22342/jme.2.2.776.163-172
Structured Arrangement Supporting The Development of Splitting Level in Doing Multiplication By Number Up To 20 Meryansumayeka Meryansumayeka; Darmawijoyo Darmawijoyo; Ratu Ilma; Jaap den Hertog
Journal on Mathematics Education Vol 2, No 2 (2011)
Publisher : Department of Doctoral Program on Mathematics Education, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22342/jme.2.2.748.199-214

Abstract

In guiding students to construct a mathematical concept themselves, learning process should be started by a context which is suit with the concept. In this research, we focused on structured arrangement which was believed to be able to support students ages 8 – 9 years old developing splitting strategy in doing multiplication. This study was a design research underlined by tenets of Realistic Mathematics Education (RME). The result show that giving structured objects, recognizing number relation in multiplication, and maintaining flexible calculation have important roles in supporting the development of mental calculation achieving splitting level.Key words: design research, mental calculation, splitting level, structured arrangement DOI: http://dx.doi.org/10.22342/jme.2.2.748.199-214
EKSPLORASI PENALARAN SISWA DALAM PEMBELAJARAN MENGGUNAKAN SOAL BERKONSEP PMRI TENTANG ARITMATIKA SOSIAL DI SMP Nabila Putri Isamer; Zulkardi _; Ratu Ilma; Ely Susanti
Jurnal Karya Pendidikan Matematika Vol 9, No 1 (2022): Jurnal Karya Pendidikan Matematika Volume 9 Nomor 1 Tahun 2022
Publisher : Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/jkpm.9.1.2022.8-14

Abstract

This article aims to examine the reasoning of students in the mathematical study of social arithmetic that focuses on profit or loss. The study is a descriptive study using pmri (Indonesia's realistic math education) that starts with online shopping as a context for both early learning and for profit or loss at the end of learning. The subject of this study is class VII SMP at lubuklinggau. Research shows that the problem with context can help students identify important information on matters about the concept of social arithmetic. The use of context in questions provides reasoning and understanding of the mathematical concepts learned.
ANALISIS KESALAHAN SISWA DALAM MENYELESAIKAN PERSOALAN MATEMATIKA MATERI ALJABAR DENGAN KONTEKS NEW NORMAL Adi Saputro; Zulkardi _; Ratu Ilma; Ely Susanti
Jurnal Karya Pendidikan Matematika Vol 9, No 1 (2022): Jurnal Karya Pendidikan Matematika Volume 9 Nomor 1 Tahun 2022
Publisher : Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/jkpm.9.1.2022.1-7

Abstract

This study aims to describe student errors in solving algebraic math problems in a new normal context. This research is a qualitative descriptive study. The subjects in this study were students of class VII A of SMPS Plus Lightning Literacy TP. 2021/2022. Test and interview methods were used as data collection methods. In order to obtain valid data, the researcher first checked the validity of the data using the time triangulation method. After obtaining valid data, the researcher analyzed the data and drew conclusions. From the results of the study, it was found that 1) Subject-A made 6 errors, namely: an error in writing a number symbol, an error in formulating an algebraic form, an error in simplifying, an error in carrying out the calculation process (determining the number of boxes) question number 2, an error in carrying out an operation division of integers (determining the number of boxes) question number 3, errors in the calculation process (determining the number of boxes) question number 4; 2) Subject-B made 3 mistakes, the errors were the same as subject-A, except for the error in writing the number symbol.
Co-Authors Adi Saputro Darmawijoyo, Darmawijoyo Deboy Hendri Dede de Haan Devi Emilya Devi Mardhiyanti Elis Sulastri Ely Susanti Jaap den Hertog Lela Anggraini Liya Nalurita Meryansumayeka Meryansumayeka Nabila Putri Isamer Nenden Octavarulia Shanty Nila Kesumawati Pirdaus Pirdaus Rusdy A Siroj Yulianti Yulianti Yusuf Hartono Zetra Hainul Putra Zulkardi Zulkardi Zulkardi _