Erfan Yudianto

Universitas Jember · Mathematics Education

Berpikir kritis memiliki peranan krusial pada potensi memecahkan persoalan sampai penarikan kesimpulan. Proses berpikir peserta didik dipengaruhi oleh tipe kepribadian yang berbeda. Oleh karena itu, tujuan penelitian ini adalah untuk menganalisis tingkat berpikir kritis siswa dalam menyelesaikan masalah persamaan lingkaran ditinjau dari kepribadian...

Abstrak Tujuan. penelitian. ini yaitu untuk mengembangkan perangkat pembelajaran matematika berbasis. hybrid-caring community yang valid, praktis. dan efektif. yang terdiri dari rencana pelaksanaan pembelajaran (RPP), lembar kerja. peserta didik. (LKPD) dan tes. hasil belajar. (THB) dan menguji.dampaknya terhadap kemampuan konek...

Matematika adalah salah satu mata pelajaran yang sulit dipahami oleh siswa karena kurangnya pemahaman siswa dalam menyelesaikan masalah matematika. Dengan menerapkan etnomatematika, diharapkan dapat meningkatkan kemampuan siswa dalam belajar matematika menjadi lebih maksimal. Keterkaitan antara Matematika dengan kehidupan sehari hari digunakan oleh...

Abstrak Penelitian ini didasari oleh rendahnya kemampuan siswa dalam menyelesaikan masalah matematika. Berdasarkan hal tersebut, tujuan dalam penelitian ini untuk mengembangkan model pembelajaran Problem Based Cooperative Learning (PBCL) beserta perangkatnya yang terdiri dari RPP, LKS, dan THB yang valid, praktis, dan efektif kemudian menguji penga...

One of the problems that occur in mathematical subjects was the ability for students to solve problems that need the Higher Order Thinking Skills (HOTS) still low. This problem also occurs in high school students (SMA) in Jember. The cause of the problem was that the mathematics teacher has not been skilled in making HOTS problems and has not guide...

This study aims to analyze the types of errors made by students in solving curved face three-dimensional problems based on Kastolan’s stages reviewed from field-dependent and field-independent cognitive styles. This study uses descriptive research with a qualitative approach. The subjects in this study were 4 students of class IX A SMP Muhammadiyah...

Penelitian ini bertujuan untuk menganalisis hasil pengembangan perangkat pembelajaran geometri bangun ruang berbantuan GeoGebra yang valid, praktis, efektif dan menganlisis pengaruhnya terhadap kemampuan spasial siswa. Metode penelitian yang digunakan dalam penelitian ini yaitu metode penelitian kombinasi atau mix method. Penelitian ini menggabungk...

Mathematics has a fairly close relationship with culture. History shows that mathematics emerged as a product of a culture based on human social activities. Integrating mathematics with culture will have an impact on more effective and meaningful learning, especially in Geometry learning which is closely related to everyday life. Alas Purwo Nationa...

Ethnomathematics is the integration of mathematics with culture that is applied by certain cultural groups. Ethnomathematics can be used as a teaching reference in order to make it easier for students to understand because the material they learn is in accordance with the context of their daily life. The research method used in this study is a deve...

Fractal is a geometric object that can be broken down into several parts and has a shape similar to the original. The development of the motif uses Koch Snowflake, the Mandelbrot Association, the Hilbert Curve, and the Julia Association to add a combination of Batik Daun Singkong Bondowoso. This study uses the Research and Development (RnD) researc...

The mathematical process is one part of mathematical literacy that students need to have in solving mathematical problems. Therefore, students who have good mathematical processing skills will find it easier to solve mathematical problems related to the real world. This article aims to determine students' mathematical literacy skills in solving sto...

This research is development research to produce student's worksheet based on a valid, practical and effective realistic mathematics education (RME) approach to know the mathematical problem solving abilities of vocational students in geometry transformation material of the translation sub topic. Thiagarajan's 4-D model was chosen as the research d...

The reason behind this research is the low mathematical ability of the students in geometry. They think that geometry is difficult to comprehend, so that we need a lesson from the teacher in order to make students interested in studying geometry. In order to create interesting learning, teachers need to see students' thinking. Therefore, this resea...

Penelitian ini bertujuan untuk mengetahui ada tidaknya pengaruh yang signifikan penerapan fase pembelajaran van Hiele pada bahasan sifat-sifat segiempat terhadap tingkat berpikir geometri siswa. Jenis penelitian ini adalah penelitian eksperimen. Populasi penelitian ini adalahh siswa kelas XI SMA Negeri 1 Kencong yang kemudian diambil sampel yaitu k...

In learning mathematics, innovation is still needed to make mathematics more easily understood by students, especially in the field of geometry. This becomes interesting when examined and is associated with van Hiele's level of geometrical thinking which is modified by Polya's problem solving steps. This study aims to determine the thought process...

Etnomatematika adalah kegiatan yang dilakukan oleh sekelompok budaya dimana tanpa mereka sadari terdapat penerapan atau konsep dasar matematika di dalamnya. Kehadiran matematika yang bernuansa budaya akan memberikan kontribusi yang besar terhadap matematika sekolah. Tujuan adanya etnomatematika adalah untuk mengakui bahwa ada cara-cara berbeda dala...

Pendidikan merupakan proses perubahan sikap dan perilaku yang diatur menurut kurikulum. Kurikulum memuat beberapa materi pelajaran salah satunya matematika. Namun sebagian besar siswa mengalami kesulitan dalam memahami matematika. Penelitian ini bertujuan untuk mengeksplorasi etnomatemi pada rias wajah dan atribut kepala paes ageng yang dilakukan o...

Etnomatematika adalah matematika yang ditemukan dalam budaya masyarakat yang tanpa sadar telah menerapkan konsep matematika dalam budayanya. Tujuan dari penelitian kualitatif dengan pendekatan etnografi ini adalah untuk mendeskripsikan etnomatematika pada bangunan Candi Agung Gumuk Kancil. Subjek penelitian ini adalah satu orang penjaga candi, satu...

Ethnomatematics is the connection between mathematics and culture. This research aimss to describe the ethnomathematics of Batik Bondowoso. This study used qualitative research with an ethnographic approach. The subjects are 3 craftsmen at Batik Kironggo house production. Data were collected by using observation, interview, and documentation. The r...

This research is a qualitative descriptive research by using 4D development consisting of the Define, Design, Develop, and Disseminate stages. The research was carried out to develop a spatial visual-oriented geometric test to measure elementary students’ creative thinking skills. The creative thinking level of each student has different categories...

Penelitian ini bertujuan untuk mendeskripsikan proses berpikir geometri siswa dalam menyelesaikan masalah luas permukaan limas dan prisma melalui tahapan Polya. Subjek penelitian ini adalah dua siswa yang berada pada level deduksi informal di SMPN 3 Jember. Siswa diberikan tes tentang luas permukaan limas dan prisma, dilanjutkan dengan wawancara. J...

Kemampuan membuktikan jarang sekali diasah dalam pembelajaran matematika. Dengan demikian, hal tersebut menjadi menarik ketika dikaji dan dikaitkan dengan level berpikir geometri van Hiele yaitu level deduksi. Penelitian ini bertujuan untuk mengetahui proses berpikir siswa level deduksi dalam membuktikan Triangle Proportionally Theorem dan konversn...

Students with a rigor level of geometric thinking can analytically solve problems, yet the ability may not be readily observable. Thus, an example of how students solve problems merits explorations. Inspired by student’s problem solving, this study aimed to examine the student’s anticipatory profile in determining Papaya tree roots' dimensions. Thi...

Kecemasan geometri adalah kecemasan yang muncul ketika menghadapi hal – hal yang berhubungan dengan geometri. Tingkatan kecemasan geometri dimulai dari rendah, sedang, tinggi, dan panik. Tujuan dari penelitian ini adalah untuk mendeskripsikan kecemasan geometri siswa dalam menyelesaikan masalah bangun ruang sisi datar ditinjau dari teori van Hiele....

Tujuan penelitan ini adalah untuk menggali etnomatematika pada bangunan Masjid Jami’ Al-Baitul Amien Jember yang kemudian digunakan sebagai bahan untuk membuat paket tes matematika bagi siswa. Penelitian ini merupakan penelitian kualitatif dengan pendekatan etnografi. Metode pengumpulan data yang digunakan adalah observasi dan wawancara. Subjek pen...

Ethnomatematics are used as modes, styles, and techniques of "tics" to describe, understand, and deal with the natural environment and cultural "mathema" in different cultural systems "ethnos". This means that ethno-mathematics functions as a bridge between mathematics and culture in society. The purpose of this research is to describe the ethnomat...

Geometry is a branch of mathematics that demands creative thinking. Teachers need a geometry instrument that is fun, simple, and meaningful to measure the creative thinking ability of junior high school students. This developmental research used a 4-D model consisting of defining, designing, developing, and disseminating the tangram-based geometry...

Technology advances demand students to adapt creatively in solving problems. This research is development research with the intention of producing a certain product that validity, practicality, and effectiveness be tested, where the development process is described as thorough as possible then evaluated. This development of geometry test used Thiag...

This research is motivated by the importance that students have the ability to anticipate. The anticipation skill is needed by students to complete fractal batik designs (Sierpinsky) by using maple so that the resulting ideas matches the original expected ideas. The purpose of this research is to enable students to use maple to design Sierpinsky sq...

Ethnomathematics refers to the application of mathematics in cultural life. This research was intended to describe the ethnomathematics in making woven bamboo handicrafts in Gintangan village, Banyuwangi. The things obtained in this research were the changes in of geometric teaching material, covering Test Problem Package with Ethnomatematics as th...

The purpose of this study was to identify the level of geometrical thinking of junior high school students in Bantul District using the Van Hiele test. The research approach was descriptive qualitative. The research subjects were students in grades VII and VIII in 4 junior high schools in Bantul district. The supporting instruments in this study we...

Ethnomathematics is the relationship between culture and mathematics found in society's habits, where people have unconsciously applied mathematical concepts in their culture or habits. The custom referred to in this study is what is done by batik in making one batik sheet every time. The purpose of this study was to describe ethnomathematics on ca...

Reasoning is the foundation of learning mathematics. If students' mathematical reasoning abilities are not well-constructed, students who learn mathematics will consider these abilities only as material based on a series of procedures and imitate examples without knowing their meanings. The purpose of this research is to produce an effective produc...

Profile of the students’ metacognition observed in this research was an activity that involved the abilities and metacognition processes of the students at each level of van Hiele thinking, including knowledge of metacognition and metacognition settings in solving geometrical problems in shape and space content. This type of research was descriptiv...

The facts indicate that students’ higher order thinking skills at second grade of SMPN 1 Jember is relatively low. They were only learning with assignments in class and did not use theory to solve their problems. Therefore, we conduct a research on mathematical learning through Problem Based Learning model to find out the effect of students’ higher...

Definition is important mathematical construction which had been recorded as a challenging topic for teacher and students. This research showed the illustration of anxiety that happened to undergraduate students of Mathematics education who were in visualization level of thinking in constructing quadrilateral definition and definition form that had...

This research aims to know the imagination process on Mathematics’ undergraduate students who had deduction level in solving Geometrics’ problem. This research is qualitative which the subjects in the research were 2 students that one female and one male. To know the imagination process, subjects were asked to solve two Geometrics’ problems. Analys...

Some studies state that mathematical ideas sometimes could be derived through a cultural-based habit or activities. This research was investigated how students are struggle in making sense three-dimensional shapes concepts by observing how Osing people doing a simple mathematical explanation in their celebrating annual festival called Tumpeng Sewu...

Each thinking level van Hiele will describe the process of thinking a people use learning the geometric concepts and types of geometric ideas thinks. This research is a qualitative descriptive research what aims to describe the thinking process of students at the level of deduction in solving geometry problems. The collection data’s method in this...

Ethnomathematics is a study of mathematics ideas form society. This research is undertaken in Sidomulyo Jember. This research goal is describe ethnomathematics model on ethnomahematics activities of coffe farmers. This research is qualitative type research with an ethnographic approach. The method of collecting data used are observation and intervi...

This study aims to describe the profile of the implementation of mathematics learning in the class, the challenges that the teachers did, and the efforts which did is to overcome the challenges in the credit semester system in mathematics learning activities. The research subjects are the students and mathematics teachers of X class in SMA 1 Jember...

This study aims to identify the reversible thinking skill of senior high school students in solving function problems. Thinking reversible is a mental activity to construct a reversible two-way correlation. One reason that makes students think reversible is that it is the primary requirement for them to solve mathematical problems; the core of scho...

Higher Order Thinking Skills (HOTS) is an ability that can create students into critical and creative individuals. The ways that can be used to reveal students' high-level thinking skills by using contextual problems in learning. The purpose of this study was to discribe the profile of high order thinking of 8th grade students in solving contextual...

Critical thinking is one of the high-level thinking. Mathematics learning in globalization era usually uses critical thinking in solving problems. Mathematics is always thought as the difficult one to be learnt. This research will describe students critical thinking profile in solving the function of compositions through collaborative learning. Thi...

Along with the rapid development of technology, there are so many innovations on tools that can facilitate human's work, one of which is a remote lamp controller. This light controller can provide convenience and comfort for people in turning on or off lights, especially they are traveling. The way remote light controller is used applies the princi...

Geometry topics are still considered difficult by most students. Therefore, this study focused on the identification of students related to van Hiele levels. The task used from result of the development of questions related to analytical geometry of space. The results of the work involving 78 students who worked on these questions covered 11.54% (n...

This research is motivated by the interest of researchers to the phenomenon of the ability of thepreservice teacher to solve problems integral to how to anticipate. It isbecause a preservice teacher to solve the problem using the integral another way to illustrate a given problem then just finish it. Anticipation in this study consisted of (1) inte...

The Ministry of Research, Technology and Higher Education of Indonesia has introduced several national and international indexers of scientific works. This policy becomes a guideline for lecturers and researchers in choosing the reputable publications. This study aimed to describe the understanding level of Indonesian lecturers related to indexing...

The Ministry of Research, Technology and Higher Education of Indonesia has introduced several national and international indexers of scientific works. This policy becomes a guideline for lecturers and researchers in choosing the reputable publications. This study aimed to describe the understanding level of Indonesian lecturers related to indexing...

This research motivated by the desire of researchers to uncover the anticipation of student creative ideas Rigor’s level (accuracy) using the Maple program. The purpose of this research to analyze the anticipation of creative ideas by rigor level students (accuracy) in observing problems related to analytical geometry of space. The method used in t...

Masyarakat saat ini tidak lepas dari berbagai peralatan canggih dan teknologi serta informasi yang terbarukan. Hal tersebut tentu saja bertujuan mempermudah masyarakat dalam melakukan aktivitasnya. Aktivitas masyarakat lebih banyak dilakukan di luar rumah baik untuk pekerjaan ataupun aktivitas sosial lainnya. Hal tersebut menyebabkan kebutuhan masy...

This research is motivated by the interest of researchers to the phenomenon of the ability of the preservice teacher to solve problems integral to how to anticipate. It is because a preservice teacher to solve the problem using the integral another way to illustrate a given problem then just finish it. Anticipation in this study consisted of (1) in...

ABSTRAK Penelitian ini dilatarbelakangi oleh kesulitan siswa menyelesaikan masalah geometri khususnya pada pokok bahasan dimensi tiga (kubus). Sebenarnya beberapa konsep ada pada kepala siswa dan siswa sudah tepat dalam menentukan prosedur terkait masalah yang diberikan, tetapi pada tahap akhir siswa tidak tepat dalam menentukan jawaban. Tujuan pen...

Penelitian ini dilatarbelakangi oleh kesulitan siswa menyelesaikan masalah integral khususnya pada topik menghitung luas daerah yang dibentuk oleh satu fungsi. Sebenarnya siswa sudah memahami apa yang dia baca, tetapi siswa mengerjakan soal terburu-buru sehingga kurang teliti dalam mengerjakan soal. Tujuan penelitian ini untuk mendeskripsikan dan m...

Penelitian ini dilatarbelakangi oleh sulitnya siswa dalam menyelesaikan masalah integral khusunya luas daerah. Banyak siswa hanya menyelesaikan masalah integral hanya berdasarkan rumus yang sudah disediakan. Siswa jarang mengaitkan konsep-konsep yang saling terkait, dalam hal ini konsep integral subpokokbahasan luas daerah.Tujuan penelitian ini unt...

Characteristics of a fractal dimension is determined in the form of fractions. A fractal is formed from the crushing process, can be derived a relationship between the mass of the diameter in order to obtain a fractal dimension. Further studies showed that the fractal dimension of a mass infiltration was influential on the quality of materials used...

Penelitian ini dilatarbelakangi oleh rendahnya hasil belajar geometri hampir siswa, hal tersebut disebabkan masih banyak siswa yang belum memahami konsep dasar geometri. Ketimpangan ini terjadi mulai Sekolah Dasar sampai Perguruan Tinggi, oleh karena itu diperlukan penelitian mengenai perkembangan kognitif siswa mulai dari tingkat yang paling dasar...

ABSTRAK Penelitian ini dilatarbelakangi oleh sulitnya siswa untuk menyelesaikan masalah matematika khususnya pada materi pecahan.Sebenarnya beberapa konsep ada pada kepala siswa tetapi siswa tidak mampu mermanggil kembali kemudian mengkaitkannya dengan masalah-masalah yang lainnya sehingga mampu menyelesaikan masalah matematika ini.Tujuan penelitia...

Abstrak: Penelitian ini dilatarbelakangi oleh sulitnya siswa untuk menyelesaikan masalah matematika khususnya pada materi Turunan. Berdasarkan data awal yang diperoleh dari pengalaman peneliti dalam mengajar, siswa kebingungan dalam memahami maksud dari soal baik yang diajukan guru maupun dari buku teks. Salah satu alternatif untuk membantu siswa d...