Reni Untarti, Reni
Program Studi Pendidikan Matematika Fakultas Keguruan dan Ilmu Pendidikan, Universitas Muhammadiyah Purwokerto

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EFEKTIFITAS PROBLEM BASED LEARNING (PBL) TERHADAP KEMAMPUAN PEMECAHAN MASALAH MAHASISWA PADA MATA KULIAH STATISTIKA INFERENSIA Untarti, Reni
Journal Mathematics Education AlphaMath Alphamath Volume 1 Nomor 1, November 2015
Publisher : Journal Mathematics Education AlphaMath

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This study is aimed to describe how the efectivenees of PBL to develope mathematical problem solving skill in inferensia statistics learning. This study was a quasi experimentconducted on the odd semester in the academic year of 2014/2015. The research population was all the 3th semester of mathematics education department, Muhammadiyah University of Purwokerto ion inferensia statistics topic. From the population, two classes were selected as the sample. The selected classes were Class III B and Class III C. Class III Bdealt with the PBL, and class III B dealt with the direct instruction. The instrument to collect the data was anessay test to measurethe mathematical communication and problemsolving skills. Kolmogorove-smirnov testwas used to test the normality of the data and to homogenity test using Levene’s Test. The data were analyzed using independent t-test. The results of the study show that PBL efective to develope mathematical problem solving skill of the 3th semester of mathematics education department student,  Muhammadiyah University of Purwokerto in inferensia statistic learning.Keyword: Mathematical Problem Solving Skill, Problem Based Learning
PENGEMBANGAN MEDIA PEMBELAJARAN MELALUI PELATIHAN MICROSOFT EXCEL UNTUK GURU SMP DI MGMP MATEMATIKA MKKS RAYON 6 BANYUMAS Untarti, Reni; Subekti, Fitrianto Eko
Proceeding Seminar LPPM UMP 2015: Buku II Bidang Ilmu Pendidikan dan Sosial Humaniora, Proceeding Seminar Nasional LPPM 2015, 2
Publisher : Proceeding Seminar LPPM UMP

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Kegiatan ini bertujuan untuk memberikan pelatihan tentang pengembangan media pembelajaran berbantuan Microsoft Excel bagi guru-guru SMP di MGMP matematika MKKS Rayon 6 Banyumas, sehingga pemahaman dan keterampilan dalam membuat media pembelajaran berbantuan Microsoft Excel semakin baik. Materi pelatihan terdiri dari pengembangan media berbantuan Microsof Excel pada meteri pembelajaran operasi hitung sederhana (penjumlahan, pengurangan, perkalian, pembagian, dan kombinasinya), statistika dan peluang, program linier, matriks, dan sistem persamaan linier dua variabel (SPLDV). Pelatihan ini menggunakan metode ceramah, demonstrasi, diskusi, latihan, dan bimbingan langsung. Berdasarkan pengamatan, hasil kegiatan dapat disimpulkan bahwa: 1) pemahaman guru tentang penggunaan Microsoft excel dalam pembelajaran matematika semakin meningkat tidak sebatas pada fungsi statistic sederhana dan 2) guru semakin termotivasi untuk mengembangkan media pembelajaran berbantuan Microsoft excel.  Kata kunci: Media Pembelajaran, Microsoft Excel
KEMAMPUAN KOMUNIKASI MATEMATIS MAHASISWA DITINJAU DARI GENDER PADA MATA KULIAH TELAAH KURIKULUM SMP Untarti, Reni; Subekti, Fitrianto Eko
PYTHAGORAS Vol 5, No 2 (2016): PYTHAGORAS
Publisher : , PRODI. MATEMATIKA, RIAU KEPULAUAN UNIVERSITY, BATAM, INDONESIA

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Abstrak. Penelitian ini bertujuan untuk mendeskripsikan perbedaan kemampuan komunikasi matematis mahasiswa pada mata kuliah Telaah Kurikulum SMP ditinjau dari gender. Jenis penelitian ini adalah penelitian deskriptif dengan pendekatan kualitatif. Subyek penelitiannya adalah mahasiswa semester III kelas B tahun ajaran 2016/2017 yang menggambil mata kuliah Telaah Kurikulum SMP. Instrumen yang digunakan berupa tes kemampuan komunikasi matematis. Pemilihan sampel menggunakan teknik purposive sampling, sehingga diperoleh 3 mahasiswa laki-laki dan 3 mahasiswa perempuan. Hasil penelitian menunjukkan bahwa 1) baik mahasiswa laki-laki ataupun mahasiswa perempuan kurang mampu dalam menyajikan masalah dari bahasa verbal ke simbol matematis dan dalam penggunaan simbol kurang tepat, 2) mahasiswa laki-laki lebih tepat dalam menyajikan masalah ke bentuk diagram dari pada mahasiswa perempuan, dan 3) mahasiswa perempuan lebih tepat dalam memberikan alasan  atas suatu pernyataan dibandingkan mahasiswa laki-laki.Kata Kunci: Kemampuan Komunikasi Matematis, Gender, Telaah Kurikulum SMP  Abstract. This study aimed to describe the differences of mathematical communication ability of students on the subject Telaah Kurikulum SMP viewed from gender. This research is a descriptive study with qualitative approach. The subject of his research is the third semester students of class B in the academic year of 2016/2017 who took the subject of the Telaah Kurikulum SMP. Instrument used was in the form of mathematical communication ability tests. The sampling method was by purposive sampling technique, then it gained 3 male and 3 female students. The results showed that 1) both students of male or female students are less capable of presenting the problem of verbal language to mathematical symbols and the use of symbols is less precise, 2) male students is more appropriate in presenting the problem in the form of a diagram than female students, and 3) female students are more precise in giving reasons for a statement than male students.Keywords: Mathematical Communication Ability, Gender, Telaah Kurikulum SMP
IDENTIFIKASI KESALAHAN JAWABAN MAHASISWA DITINJAU DARI KEMAMPUAN KOMUNIKASI MATEMATIS Subekti, Fitranto Eko; Untarti, Reni; Gunawan, Gunawan
JES-MAT (Jurnal Edukasi dan Sains Matematika) Vol 2, No 2 (2016): JURNAL EDUKASI DAN SAINS MATEMATIKA
Publisher : JES-MAT (Jurnal Edukasi dan Sains Matematika)

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This research aims to identify the error of students’ answers to the quations of descriptive statistics viewed from mathematical communication skill. This is a descriptive research. The subjects of this research are 36 students of class IB. The technique of data collection used in this research is test. Based on the result of the research, it can be concluded that the errors of students’ answers to the quations of descriptive statistics viewed from mathematical communication skill are: (1) the error in presenting diagram appropriate to the objective of 30.56%; (2) the error in presenting data in the frequency distribution table of 27.78%; (3) the error in presenting data from frequency histogram to frequency distribution table of 22.22%; and (4) the inconsistency in writing symbol of 36.11%. Based on the result, it is known that the most errors of the students’ answer viewed from mathematical communication skill are the inconsistency in using the symbols.Keywords: Error identification, Mathematical Communication Skill
DESKRIPSI KEMAMPUAN KOMUNIKASI MATEMATIS MAHASISWA PADA MATA KULIAH STATISTIK PENDIDIKAN Eko Subekti, Fitrianto; Untarti, Reni; Muhammad, Malim
Euclid Vol 2, No 2 (2015): Euclid Vol 2 No.2 Juli 2015
Publisher : Universitas Swadaya Gunung Jati

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Abstrak Penelitian ini bertujuan untuk memperoleh gambaran kemampuan komunikasi matematis mahasiswa PGSD Semester V Universitas Muhammadiyah Purwokerto. Metode penelitian yang digunakan adalah deskriptif kualitatif. Subyek penelitian adalah mahasiswa PGSD yang mengambil mata kuliah statistik pendidikan pada tahun ajaran 2014/2015. Teknik pengambilan data yang digunakan berupa tes uraian kemampuan komunikasi matematis dan wawancara untuk menggali informasi mendalam dan pendapat mahasiswa, sehingga diperoleh gambaran kemampuan komunikasi matematis mahasiswa. Hasil penelitian menunjukkan bahwa: 1) pada mahasiswa dengan kemampuan komunikasi rendah untuk beberapa soal mereka tidak mampu memberikan jawaban secara rasional dan lengkap serta tidak mampu menginterpretasikan hasil dari output tersebut, 2) pada mahasiswa dengan kemampuan komunikasi sedang, mereka sudah mampu menjawab pertanyaan secara rasional walupun tidak lengkap, dan mereka sudah dapat menginterpretasikan hasil secara benar walaupun tidak lengkap, dan 3) pada mahasiswa dengan kemampuan komunikasi tinggi, mereka sudah mampu menjawab pertanyaan secara rasional dan lengkap serta mampu menginterpretasikan hasil secara benar, walaupun belum lengkap. Kata Kunci : Kemampuan Komunikasi Matematis, Statistik Penelitian
Deskripsi kemampuan representasi matematis ditinjau dari peminatan jenjang pendidikan menengah mahasiswa program studi pendidikan matematika pada mata kuliah statistika deskriptif Untarti, Reni; Subekti, Fitrianto Eko
Jurnal Mercumatika : Jurnal Penelitian Matematika dan Pendidikan Matematika Vol 2, No 2 (2018)
Publisher : Universitas Mercu Buana Yogyakarta

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Penelitian ini bertujuan untuk memperoleh gambaran kemampuan representasi matematis ditinjau dari peminatan saat jenjang pendidikan menengah mahasiswa semester I Program Studi Pendidikan Matematika FKIP Universitas Muhammadiyah Purwokerto. Jenis penelitian digunakan adalah penelitian deskriptif kualitatif. Prosedur penelitian ini meliputi tiga tahapan utama yaitu: tahap persiapan, tahap pelaksanaan, dan tahap analisis data. Pada tahap persiapan meliputi: (a) mempersiapkan soal tes kemampuan representasi matematis; (b) menentukan subyek penelitian, yaitu dengan cara purposive sampling, sehingga diperoleh 9 Mahasiswa, 3 mahasiswa dari jenjang SMA IPA, 3 mahasiswa dari jenjang SMA IPS, 3 mahasiswa dari jenjang SMK teknik untuk diwawancarai tentang kemampuan representasi matematisnya; dan (c) membuat pedoman wawancara. Tahap pelaksanaan meliputi: (a) mengambil data jenjang pendidikan menengah mahasiswa; (b) melaksanakan tes representasi matematis; dan (c) melaksanakan wawancara. Tahap analisis data meliputi: (a) tahapan reduksi data, (b) penyajian data, dan (c) penyimpulan data. Teknik pengumpulan data yang digunakan oleh peneliti melalui beberapa cara, yaitu: tes dan wawancara. Hasil penelitian menunjukkan bahwa: (a) mahasiswa dengan latar belakang SMA IPA mempunyai kemampuan representasi matematis, (b) mahasiswa dengan latar belakang SMA IPS belum memiliki kemampuan representasi matematis, dan (c) mahasiswa dengan latar belakang SMK sudah memiliki kemampuan representasi matematis, walaupun belum sempurna. 
The Identification of the Students’ Mathematical Communication Skills Error in Form of Pictures on the Geometry of Space Subject Kusuma, Anggun Badu; Untarti, Reni
EDUCARE Vol 10, No 2 (2018)
Publisher : EDUCARE

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ABSTRACT: The space geometry is one of the major subjects, which must be taken by the students of the mathematics education. The aim of the courses is to make students are able to master the form geometry in three dimensions. Competencies must be mastered include the ability to draw space, the ability to draw the slice field, and the ability to determine the extents of the slice field. Based on the competencies, the material of the space geometry was not an easy matter to be mastered by students. Students needed their imagination to visualize the shape, which came from the two-dimensional images shaped into a three dimensional or vice versa. These difficulties did not only occur on the students, but also the mathematics teachers, who had the learning process in the schools. This research belonged to qualitative descriptive study, in which the subject of this research was the class A second semester students of Mathematics Education Study Program of UMP (Muhammadiyah University of Purwokerto) in Central Java, Indonesia, in academic year 2015/2016, which belonged to the class of the shape geometry. The instruments which were used were the observation sheet and the documentation in the form of photographs or videos. The research procedures consisted of the steps in the lesson study in 3 cycles. Each cycle consisted of plan, do, and see steps. The result of the study was that the students’ error of mathematical communication ability was in the form of pictures on the space geometry subjects occurred on the drawing procedure in the determination of the slice field; the concept of an image in three dimensions; and the students’ concept in the fields analysis.KEY WORDS: Mathematical Communication Skill; Lesson Study; Geometry of Space; Form of Pictures; Students’ Concept.  About the Authors: Anggun Badu Kusuma and Reni Untarti are the Lecturers at the Departement of Mathematics Education, Faculty of Education and Teacher Training UMP (Muhammadiyah University of Purwokerto), Jalan Raya Dukuhwaluh, Purwokerto City, Central Java, Indonesia. E-mails: anggunbadu@ump.ac.id and reniuntarti@gmail.comSuggested Citation: Kusuma, Anggun Badu & Reni Untarti. (2018). “The Identification of the Students’ Mathematical Communication Skills Error in Form of Pictures on the Geometry of Space Subject” in EDUCARE: International Journal for Educational Studies, Volume 10(2), February, pp.87-94. Bandung, Indonesia and BS Begawan, Brunei Darussalam: Minda Masagi Press owned by ASPENSI and BRIMAN Institute, ISSN 1979-7877. Article Timeline: Accepted (December 13, 2017); Revised (January 15, 2018); and Published (February 28, 2018).
IDENTIFIKASI KESALAHAN DALAM MAKALAH MAHASISWA DITINJAU DARI KEMAMPUAN KOMUNIKASI MATEMATIS Subekti, Fitrianto Eko; Untarti, Reni
ALPHAMATH Vol 2, No 1 (2016)
Publisher : ALPHAMATH

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ABSTRACT: This research is aimed to identify errors on working paper which is written by the students observed from mathematic communicative competence. This research is included descriptive research. The subjects of this research are the students of mathematic department that get remedial in lesson matematika sekolah 4. There are nineteen students. The data is taken from the working paper which is written by the students. The sample is taken using purposive sampling technique. The working paper that is used include: (1) statistic; (2) exponents and logarithms; (3) sequence and series. Based on the research can be concluded that: errors on working paper which is written by the students observed from mathematic communicative competence are: (1) inconsistencies and inaccuracies in using mathematic symbol; (2) unability in describing inequality solution; and (3) less capable in showing tables and informative issues. KEY WORDS: error identification, mathematic communicative competence
PENGARUH MODEL RECIPROCAL TEACHING TERHADAP KEMAMPUAN REPRESENTASI MATEMATIS SISWA KELAS VII SMP NEGERI 6 PURWOKERTO Artiah, Artiah; Untarti, Reni
ALPHAMATH Vol 3, No 1 (2017)
Publisher : ALPHAMATH

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This research aimed to determine whether the reciprocal teaching model affects the ability of students’ mathematical representation or not. The research design used was post test only control design. Sampling used cluster random sampling by taking two classes namely, class VII B as the experimental class and class VII A as the control class. The location of the research was SMP Negeri 6 Purwokerto. As for obtaining data used post test the ability of mathematical representation, the post test question in the form of description. Post test result of mathematical representation ability showed experiment calss average was 65.23, while control class equal to 59.31. Also it obtained the score of hypothesis testing using independent sample t-test as follows, Sig. = 0.051/2 = 0.0255 with 0.05 which means Sig < 0.05 or 0 H is rejected. It can be concluded that the reciprocal teaching model affecs the ability of mathematical representation. Keyword: Mathematical Representation Ability, Reciprocal Teaching.
Efektifitas Problem Based Learning (PBL) terhadap Kemampuan Pemecahan Masalah Mahasiswa pada Mata Kuliah Statistika Inferensia Untarti, Reni
ALPHAMATH Vol 1, No 1 (2015)
Publisher : ALPHAMATH

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This study is aimed to describe how the efectivenees of PBL to develope mathematical problem solving skill in inferensia statistics learning. This study was a quasi experiment conducted on the odd semester in the academic year of 2014/2015. The research population was all the 3th semester of mathematics education department, Muhammadiyah University of Purwokerto ion inferensia statistics topic. From the population, two classes were selected as the sample. The selected classes were Class III B and Class III C. Class III B dealt with the PBL, and class III B dealt with the direct instruction. The instrument to collect the data was an essay test to measure the mathematical communication and problem solving skills. Kolmogorove-smirnov test was used to test the normality of the data and to homogenity test using Levene’s Test. The data were analyzed using independent t-test. The results of the study show that PBL efective to develope mathematical problem solving skill of the 3th semester of mathematics education department student, Muhammadiyah University of Purwokerto in inferensia statistic learning. Kata Kunci: Mathematical Problem Solving Skill, Problem Based Learning