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Erfan Yudianto

Departement Of Mathematics Education, University Of Jember

Author-ID : 2511968

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PROSES BERPIKIR ALJABAR SISWA DALAM MEMECAHKAN PERMASALAHAN MATEMATIKA BERDASARKAN KEMAMPUAN ALJABAR DAN GENDER Naziroh, Irmu Afin; Suharto, S; Yudianto, Erfan; Hobri, H; Murtikusuma, Randi Pratama
Kadikma Vol 9 No 2 (2018): Agustus 2018
Publisher : Department of Mathematics Education , University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/kdma.v9i2.9977

Abstract. Algebraic thinking is a process of solving mathematical problems in which uses letters (variables) and perform deeper activity such as problem identifications, represent information symbolically, make mathematic model, as well as interpret and applying mathematic findings. This research was conducted to describe how algebraic thinking process of Junior High School student based on gender and math ability. The subject of research was divided into two of student with high math ability, two student with mid math ability and two student with low math ability in mathematical problem solving of linier equation system of two variable for C5 and C6 problems category where in each category consist of boy and girl. The result shows for C5 and C6 problems, student with high and mid math ability both boys and girls were capable of algebraic thinking in every steps of problem solving. Student with low math ability, the boy was capable of algebraic thinking in every steps of problem solving for C5 and C6 problems. Whereas the girl capable of algebraic thinking in every steps, but for C6 problem category, the girl was only able to perform two algebraic thinking activity in problem solving. Keywords: algebraic thinking, mathematic ability, problem solving

PROFIL PEMECAHAN MASALAH SISWA DALAM MEMECAHKAN MASALAH SPLDV BERDASARKAN TAHAPAN POLYA DITINJAU DARI GAYA KOGNITIF FI DAN FD Suhatini, Percoyo Unggul; Trapsilasiwi, Dinawati; Yudianto, Erfan
Kadikma Vol 10 No 1 (2019): April 2019
Publisher : Department of Mathematics Education , University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/kdma.v10i1.11656

This study aims to describe the profile of problem solving students based on the Polya stages in terms of cognitive style. The problem solving profile is a general description or description of the activities of solving mathematical problems carried out by students using previously acquired knowledge. The description is related to the psychological cognitive style possessed by students. Psychological cognitive style is divided into 2, namely the independent and field dependent cognitive style fields. Analysis of students' answers in the problem of the Two Variable Linear Equation System based on the 4 stages of the Polya consists of understanding the problem, making a plan of completion, implementing the completion plan and checking again. The instruments used were GEFT test, problem solving test, Two Variable Linear Equation System, and interview. The subjects of the study were 6 VIIIE class students at Genteng 2 Public Middle School. In general, field independent students are better at solving problems than field dependent students. Keywords: Cognitive Style, Problem Solving, Polya Stage, Profile.

KEMAMPUAN KOMUNIKASI MATEMATIS SISWA TUNAGRAHITA RINGAN SMALB-C NEGERI JEMBER DALAM MENYELESAIKAN SOAL PENJUMLAHAN DAN PENGURANGAN ALJABAR MENGGUNAKAN ALAT PERAGA KERTAS ALJABAR Sholikhah, Mar’atus; Trapsilasiwi, Dinawati; Suharto, S; Susanto, S; Yudianto, Erfan
Kadikma Vol 9 No 2 (2018): Agustus 2018
Publisher : Department of Mathematics Education , University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/kdma.v9i2.9781

Abstract. The purpose of this research is to describe the writing mathematical communication skills of mild mental retardation students at Jember State SMALB-C solved the problem of addition and subtraction of algebra using algebra paper learning media. The subject used are two students of class x mild mental retardation. Data collection are observation, test and interviews. Observation was carried out during the delivery of the addition and subtraction material of algebra and introducing learning media and giving practice questions. The question of test is algebra addition and subtraction as much as three reserved description and interview to each subject. The result of this research shows that subject has fulfilled of the indicators of NCTM's mathematical communication skills except sub indicator c in question number 2, because the student did not explain the algebra paper learning media attached to the answer sheet and do not write conclusions. In interview, the subject stated that using algebra paper learning media can help and simplify the problem of completing the addition and subtraction of algebra. Keywords: mild mental retardation student, mathematical communication skills, algebra paper learning media.

PROFIL SISWA BERKEMAMPUAN MATEMATIKA TINGGI DALAM MEMECAHKAN SOAL CERITA POKOK BAHASAN ARITMATIKA SOSIAL Fatmawati, Kamila Duwi; Trapsilasiwi, Dinawati; Yudianto, Erfan; Kristiani, Arika Indah; Hussen, Saddam
Kadikma Vol 10 No 2 (2019): Agustus 2019
Publisher : Department of Mathematics Education , University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/kdma.v10i2.17399

The problem-solving profile is a general description of the activities of solving mathematical problems carried out by students using the five stages of IDEAL model problem solving namely identifying problems, defining problems, finding solutions, implementing strategies, and reviewing and evaluating their effects. This becomes interesting when it is associated with mathematical abilities. This study aims to describe the profile of students with high mathematical ability in solving questions about the subject of Social Arithmetic. This type of research is qualitative research. Students with high mathematical ability were given two problem-solving test questions, then interviews were conducted to find out more in the process of solving them. The results obtained are students with high mathematical ability able to meet all the indicators of each stage of solving the IDEAL model. This can be seen from the results of the work provided and interviews conducted by researchers against these students.

ANALISIS KESALAHAN SISWA DALAM MENYELESAIKAN SOAL MATERI FUNGSI BERDASARKAN KRITERIA WATSON DITINJAU DARI PERBEDAAN GENDER SISWA SMP KELAS VIII Saputri, Risma Rintias; Sugiarti, Titik; Murtikusuma, Randi Pratama; Trapsilasiwi, Dinawati; Yudianto, Erfan
Kadikma Vol 9 No 2 (2018): Agustus 2018
Publisher : Department of Mathematics Education , University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/kdma.v9i2.9710

Abstract. The purpose of this research is to analyze student’s errors based on Watson's criteria reviewed from gender. From the results, it can be known the types of student errors, the percentage, and the causes of student’s errors that occur. The research is descriptive qualitative. Data collection was done by test and interview. The test are given to the students to find out the types of errors that occur when they complete it. The interview with subjects is done to find out the reason why they did error in completing the test. Subject in this research are 10 students in class VIII C of Junior High School 8 Jember. Five male students and female students. Based on the result of this research, the male students are disposed to do an error omitted data with 13,33%, 13,33% response level conflict, and 16,67% above other. The female students are disposed to do an error omitted conclusion with 24,14%. Keywords: error analysis, Watson’s criteria, function, gender

ETNOMATEMATIKA PEMBUATAN KERAJINAN TANGAN ANYAMAN BAMBU MASYARAKAT OSING DI DESA GINTANGAN BANYUWANGI SEBAGAI BAHAN AJAR GEOMETRI Fajar, Fahmi Alan; Sunardi, S; Yudianto, Erfan
Kadikma Vol 9 No 3 (2018): Desember 2018
Publisher : Department of Mathematics Education , University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/kdma.v9i3.10920

Ethnomatematics is the application of mathematics in cultural life. The purpose of this study was to describe ethnomatematics of making woven bamboo handicrafts in the village of Gintangan Banyuwangi. The things obtained in this study were changed in the form of geometric teaching materials, namely the Test Problem Package with the topic of Ethnomatematics. This type of research is qualitative with an ethnographic approach. Data collection methods used are observation and interviews. The subjects of the study were 2 people, namely a foreman making woven bamboo crafts, kukusan, ereg, tenong, and nyiru and a maker of bamboo woven kukusan, ereg, tenong, and nyiru. Ethnomatematics emerged when the woven craftsmen carried out activities to measure, calculate and design. When the process of measuring the thickness of the bamboo sharpener comes the measurement concept using meters (m). During the process of calculating the drying time of bamboo and the amount of bamboo sharpener a comparative concept of value appears. During the design process, the concept of quadrilateral and number sequences emerged. The results of the study are geometry teaching materials in the form of a test test package. The question test package is intended for class VIII middle school students. This Question Test Package consists of 4 C5 and 1 C6 questions Keywords: Ethnomatematics, Bamboo Woven Crafts, Geometry

ANALISIS KEMAMPUAN BERPIKIR KRITIS SISWA DALAM MENYELESAIKAN SOAL ARITMETIKA SOSIAL DALAM PEMBELAJARAN BERBASIS LESSON STUDY FOR LEARNING COMMUNITY DITINJAU DARI KECERDASAN LOGIS MATEMATIS Yunita, Nindya Wulan; Hobri, H; Oktavianingtyas, Ervin; Sunardi, S; Yudianto, Erfan
Kadikma Vol 9 No 3 (2018): Desember 2018
Publisher : Department of Mathematics Education , University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/kdma.v9i3.10616

This research describes about the critical thinking ability of SMP Negeri 4 Jember students in solving social arithmetic problem. Data collection methods which were used are tests, observations, and interviews. The research subjects consist of 3 students where one student in the category of high mathematical logic intelligence, one student in the category of medium mathematical logic intelligence, and one student in the category of low mathematical logic intelligence. In LSLC-based learning, students in the category of high mathematical logic intelligence included in TKBK 4 were very critical, students in the category of medium mathematical logic intelligence included in TKBK 2 were quite critical, and students in the category of low mathematical logic intelligence included in TKBK 0 were not critical. In the critical thinking ability test, students in the category of high mathematical logic intelligence included in TKBK 4 were very critical, students in the category of medium mathematical logic intelligence were included in TKBK 3 were critical, and students in the category of low mathematical logic intelligence included in TKBK 2 were quite critical. The higher the category of mathematical logic intelligence by the subject then the higher student’s critical thinking ability. Keywords: critical thinking ability, mathematical logic intelligence, lesson study for learning community

ETNOMATEMATIKA POLA TARIAN JEJER JARAN DAWUK BANYUWANGI SEBAGAI INSPIRASI PENGEMBANGAN PAKET TES GEOMETRI Sandhi, Niluh Shindi Aprilia; Trapsilasiwi, Dinawati; Yudianto, Erfan
Kadikma Vol 9 No 3 (2018): Desember 2018
Publisher : Department of Mathematics Education , University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/kdma.v9i3.11280

Ethnomatematics is the application of mathematics in cultural life. The purpose of this study was to describe the ethnomatematic activity of the Jejer Jaran Dawuk Banyuwangi dance in Sanggar Jingga Putih Banyuwangi. The product produced in this study is in the form of geometric teaching materials, namely the test problem Package with the topic of Ethnomatematics. This type of research is qualitative with an ethnographic approach. Data collection methods used are observation and interviews. The research subjects were 3 peoples Banyuwangi Culture, dance teacher, and dancer Jejer Jaran Dawuk Banyuwangi. Ethnomatematics is seen when dancers dance a dance to measure, calculate, and design activities. At the time of the process of determining the time to start the dance and the time of change of movement appeared the concept of counting. When determining the distance between dancers, the concept of measuring distance using nonstandard size appears. When performing dance moves and floor patterns, the concept of designing lines, angles, and waking up appears flat. The results of the study are geometry teaching materials in the form of test packages. The test package is intended for junior high school students of class IX. The test package consists of 3 questions level C5 and 1 question level C6. Keywords: Ethnomatematics, Jejer Jaran Dawuk Dance, Geometry

ANALISIS KEMAMPUAN VISUAL SPASIAL SISWA DALAM MENYELESAIKAN SOAL MATEMATIKA BERSTANDAR PISA KONTEN SHAPE AND SPACE DITINJAU DARI LEVEL BERPIKIR GEOMETRI VAN HIELE Ambarwati, A; Setiawan, Toto Bara; Yudianto, Erfan
Kadikma Vol 9 No 3 (2018): Desember 2018
Publisher : Department of Mathematics Education , University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/kdma.v9i3.10829

This study was purposed to describe the students’ spatial visual ability in solving PISA standard math questions in Shape and Space content viewed from van Hiele's level of geometrical thinking. The research participants were 7 students who fulfilled each level of van Hiele's geometrical thinking starting from level 0 to level 3 in class XI IA 4 Glagah 1 Public Senior High School. Data collection methods were test and interviews. Based on data analysis, the results of the study show that students who are on level 3 van Hiele geometry levels, on levels between 2-3, and level 2 meet all characteristics of visual abilities. Meanwhile, students who are on levels between 1-2, level 1, levels between 0-1, and level 0 do not all meet the characteristics of spatial visual abilities. Characteristics of students' spatial visual abilities in imagination are the most dominant characteristics (most fulfilled) among the others, while the use of concepts (conceptualization) and using several ideas to find new ways are the most difficult characteristics to fulfill. Keywords: PISA standard math questions with Shape and Space content, van Hiele's level of geometrical thinking, spatial visual abilities.

Development of Islamic boarding school-based learning tools on social arithmetic material to improve students' numeracy skills Habibi, Ahmad Anas; Lestari, Nurcholif Diah Sri; Kurniati, Dian; Susanto; Yudianto, Erfan; Sanawi, Ihsan
Kreano, Jurnal Matematika Kreatif-Inovatif Vol. 15 No. 2 (2024): Kreano, Jurnal Matematika Kreatif-Inovatif
Publisher : UNNES JOURNAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/0gwxkv54

The numeracy abilities of students in Indonesia are still considered inadequate or quite low and must continue to be improved. One of the efforts made to improve students' numeracy abilities is by implementing learning tools that can support the development of these abilities. The research aims to develop learning tools that can be declared valid, practical, and effective, especially in social arithmetic material, and improve students' numeracy skills. This research is development research with the 4D model from Thiagarajan. Thiagarajan's 4D stages include the definition, design, development, and deployment stages. The data collection techniques used are observation, questionnaires, and tests. The research results on developing Islamic boarding school-based learning tools are classified as valid, practical, and effective. The level of validity can be seen from the validation value: for the teaching module, it is 3.47; LKPD is 3.44; for the learning achievement test, it is 3.32; and the manual is 3.31 (maximum score 4), which is included in the valid category. The practicality value obtained from the students' activities was 90.7%, which was in the very good category; the implementation of learning was 3.56, which means high value; as well as the students' response questionnaire showed a positive value. The effectiveness value seen from the students' learning outcomes data was obtained at 87.0% classical completion. Not only that, but effectiveness can also be seen from the students' numeracy ability test, namely the results pre-test, which was an average of 34.87% increase in revenue post-test to 82.0%, which was then analyzed using the N-Gain test to obtain an average result of 0.73 which was included in the high category. Thus, Islamic boarding school-based learning tools on social arithmetic material can effectively be used to improve students' numeracy skills. Kemampuan numerasi peserta didik di Indonesia masih tergolong kurang atau cukup rendah dan masih harus terus ditingkatkan. Salah satu upaya yang dilakukan untuk meningkatkan kemampuan numerasi peserta didik adalah dengan menerapkan perangkat pembelajaran yang dapat menunjang berkembangnya kemampuan tersebut. Adapun penelitian yang dilakukan ini memiliki tujuan untuk mengembangkan perangkat pembelajaran yang dapat dinyatakan valid, praktis, dan efektif, khususnya pada materi aritmatika sosial serta mampu meningkatkan kemampuan numerasi santri. Penelitian ini termasuk dalam jenis penelitian pengembangan dengan model 4D dari Thiagarajan. Tahapan 4D dari Thiagarajan mencakup tahap pendefinisian, perancangan, pengembangan, dan penyebaran. Teknik pengumpulan data yang digunakan adalah observasi, angket, dan tes. Hasil dari penelitian pengembangan perangkat pembelajaran berbasis pesantren tergolong ke dalam kriteria valid, praktis, dan efektif. Tingkat kevalidan dapat dilihat dari nilai validasi, untuk modul ajar sebesar 3,47; LKPD sebesar 3,44; tes hasil belajar sebesar 3,32; dan buku petunjuk sebesar 3,31 (skor maksimal 4) yang termasuk pada kategori valid. Nilai kepraktisan diperoleh dari aktivitas santri sebesar 90,7% yang masuk dalam kategori sangat baik, keterlaksanaan pembelajaran sebesar 3,56 yang berarti bernilai tinggi, serta angket respon santri yang menunjukkan nilai positif. Nilai keefektifan dilihat dari data hasil belajar santri diperoleh 87,0% tuntas secara klasikal. Tidak hanya itu, keefektifan dilihat dari tes kemampuan numerasi santri, yakni hasil pre-test yang semula rata-rata 34,87% meningkat pada hasil post-test menjadi 82,0%, yang kemudian dianalisis menggunakan uji N-Gain dengan memperoleh hasil rerata 0,73 yang masuk dalam kategori tinggi. Dengan demikian dapat disimpulkan bahwa perangkat pembelajaran berbasis pesantren pada materi aritmatika sosial sudah layak untuk digunakan dan terbukti efektif untuk meningkatkan kemampuan numerasi santri.

Co-Authors Abi Suwito Afifi, Rizky Nur Agustiningtyas, Iin Triana Aini, Novi Rosidatul Ambarwati, A Ambarwati, Reza Andini Luluk Nofitarini Annisa Istiqomah Annisa Rahman Navira, Deva Annisatul Maghfiroh Arika Indah Kristiani Bayu Exsanty Aribowo Bayu Exsanty Aribowo Budianto, Trio Rhoma Cahya, Ine Clarita Cahyani, Ika Arum Cahyo, Rahmad Dwi Citra Wahyuningtyas Dewi, Mayra Fadhilla Dewi, Miya Ayu Kumala Dian Kurniati Didik Sugeng Pambudi Didik Sugeng Pambudi Dinar Aulia Wahyuningtyas Dinawati Trapsilasiwi Dita Bachtiar Diyanah, Hidayatud Eric Dwi Putra Ervin Oktavianingtyas Fajar, Fahmi Alan Farisa Nurillah fatmawati, kamila duwi Fazira, Shima Kunaza Febrianto, Eko Yudi Febriyanto, Eko Yudi Febriyanto, Eko Yudi Febriyanto Fiantika, Feny Rita Firmansyah, Frenza Fairuz Habibi, Ahmad Anas Hajar Istiqomah Hayiduerapu, Nihassuna Hermawan, Lendi Ike Hidayat, Siti Holifa Hidayatullah, Arfan Hikam, Fashia Ikhlasul Hikmah Ardiantika Sari Hobri Husain, Muhammad Imam Icha Shofia Karlita Ulfa Idhami, Tantri Cahya Indri Aprilianti Indri Aprilianti Jatmiko, Dhanar Dwi Hary Kamila Duwi Fatmawati Kamila Duwi Fatmawati Karima Salasari Karimah Salasari Karimah Salasari Khumayroh, Alfatikha Anik Lestari, Nurcholif Diah Sri Lioni Anka Monalisa, Lioni Anka Liski Roswita Dinia Luh Putu Indah Budyawati, Luh Putu Indah Lusiana, Fina Yatul Mahmudi, Kendid Manuel, Carlos Maulana, Muhammad Ilzam Misbahul Munir Mutrofin Mutrofin N Nuriman nabilatul hafidhoh Naziroh, Irmu Afin Niken Shofiana Dewi Nila Lestari Nila Lestari Nur Hamidah Nur Hamidah Nur Izzatun Nisa Liliyan Nur Izzatun Nisa Liliyan Nur Safrida, Lela Nurcholif Diah Sri Lestari Nuriani Dewi Novianti Nurmaharani, Rika Nurul Wahidah panglipur, indah rahayu Pirdausia, Noni Seftia Prastika, Sulia Anis Pratika Maharani Pratika Maharani Pratiwi, Gita Adelia Prayoga, Mohammad Evan Prayogo, Gilang Pribadi, Febrianti Priciliya, Sinta Putra, Falih Helmi Wibisono Qomariyah, Dinda Nurul Ramadhani, Ariel Bachtiar Randi Pratama Murtikusuma Rasyid, Irwan Hainur Reza Ambarwati Rika Nurmaharani Rima Dwi Oktaviani Rizka Amalia Febriyanti Rosanggreni, Bunga Yana Rusdiyana, Erine S Suharto S Sunardi S Susanto Saddam Hussen Safrida, Lela Safrida, S.Pd., M.Pd., Lela Nur Sahrita, Titis Sanawi, Ihsan Sandhi, Niluh Shindi Aprilia Saputri, Adillia Natasya Saputri, Risma Rintias Sari, Cindi Septia Sari, Maulifa Yunita Seli Wahyutini Khoiriyah Seli Wahyutini Khoiriyah Sholikhah, Mar’atus Sinta Priciliya Sofi Astri Sofia Novaliyanti Mahmuda Sofia Novaliyanti Mahmuda Solly Aryza Suharto Suharto Suhatini, Percoyo Unggul sulihah, nurfaizah titisari Sunardi sunardi sunardi Sunardi Sunardi Sunardi Sunardi Sunardi Sunardi Sunardi Sunardi Sunardi, Sunardi Suryandari, Nurlayli Dewi Susanto Susanto Susanto Susanto Susanto Susanto Susanto Susanto Susanto Susanto Susanto, Susanto Susi Setiawani Titik Sugiarti Toto Bara Setiawan WIHARDJO, EDY Yufrida Septi Nindya Yunita, Nindya Wulan Zulnaidi, Hutkemri

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