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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 pendidik untuk menyampaikan materi pembelajaran sehingga siswa dapat dengan mudah menemukan adanya matematika pada kehidupan nyata. Penelitian ini betujuan untuk mengembangkan lembar kerja peserta didik berbasis etnomatematika pada Masjid Jamik Sumenep. Metode yang digunakan dalam penelitian ini adalah research and development (R&D) dengan model 4D. Hasil penelitian menujukkan lembar kerja peserta didik yang sudah dikembangkan memenuhi kriteria valid, praktis dengan persentase 82,02% dengan ketegori baik, dan efektif dengan 25 siswa memenuhi kriteria tuntas dan jumlah keseluruhan siswa yang telah tuntas lebih dari sehingga dapat dikategorikan dalam tuntas secara klasikal. Selain itu, Persentase hasil angket siswa yang memilih pilihan setuju dan sangat setuju sebanyak lebih dari 75% pada setiap indikator, maka lembar kerja peserta didik berbasis etnomatematika di Masjid Jamik Sumenep mendapatkan respon positif.

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. Jenis penelitian ini adalah deskriptif kualitatif. Hasil penelitian menunjukkan bahwa proses berpikir siswa mengalami kondisi disequilbrium dan equilbrium dengan melalui asimilasi dan akomodasi dalam setiap tahap pemecahan masalah luas permukaan limas dan prisma, serta siswa juga memenuhi indikator kemampuan berpikir geometri Van Hiele pada level deduksi informal. Siswa memahami kondisi dan fakta masalah, mengidentifikasi himpunan sifat-sifat bangun yang berbeda-beda untuk mengkarakterisasi kelas dan mengaitkan antar karakteristik pembentuk konsep, menentukan rumus yang tepat dalam pemecahan masalah, dan memecahkan masalah dengan menekankan pada pentingnya sifat gambar dan relasinya.

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 konversnya. Jenis penelitian ini adalah penelitian kualitatif. Siswa level deduksi diberikan tes pembuktian teorema sebanyak dua soal, kemudian dilakukan wawancara untuk mengetahui lebih dalam proses berpikirnya. Hasil yang diperoleh adalah siswa level deduksi mampu membuktikan teorema dengan memanfaatkan pengetahuan yang dimiliki baik mengenai unsur-unsur pangkal (titik dan garis), postulat kesejajaran garis dan kesebangunan segitiga AAA, definisi sudut dan kekongruenan sudut, teorema kesejajaran garis dan kesebangunan segitiga SAS~, corollary CSSTP dan CASTC. Hal ini terlihat dari hasil pembuktian yang diberikan dan wawancara yang dilakukan oleh peneliti terhadap siswa tersebut.

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. Jenis penelitian ini yaitu penelitian deskriptif kualitatif. Subjek penelitian ini masing - masing dua siswa pada level visualisasi, analisis, dan deduksi informal. Teknik pengumpulan data dilakukan melalui kombinasi (triangulasi). Hasil penelitian ini menunjukkan bahwa siswa dari tiap level memiliki kecemasan geometri yang berbeda. Siswa visualisasi mengalami kecemasan sedang dan tinggi dalam mendefinisikan dan mengidentifikasi sifat serta unsur bangun ruang sisi datar. Siswa analisis mengalami kecemasan sedang dalam menyelesaikan masalah geometri yang berkaitan dengan perhitungan diagonal, volume, dan luas permukaan. Siswa deduksi informal mengalami kecemasan tinggi dalam menyelesaikan masalah berkaitan dengan definisi dan unsur bangun ruang serta permasalahan dalam bentuk cerita.

This research aimed to develop a valid, practical, and effective worksheets with SAVI approach and can improve students' mathematical representation skills on cylinder material. The method of this research was a Research and Development (R and D) through the development of 4-D (Define, Design, Develop, and Disseminate). This research was conducted at SMP Negeri 1 Pace. The subjects of this research was 32 students of class IX. The results of the validation of the LKS with SAVI approach by the validator get an assessment of 3.8 after experiencing product revision. This shows that the LKS with SAVI approach that was developed is declared valid. The results of the analysis of the practicality of the LKS with SAVI approach were declared practical with the percentage of student response questionnaires of 85.03% and from the teacher's observation sheet of 87.5%. LKS with SAVI approach succeeded in increasing students' representation ability with a percentage increase of 90.625%. The result of the percentage of product completeness is 71.875% so it can be said that the LKS product with SAVI approach is an effective product. These results indicate that worksheets with SAVI approach are considered valid, practical, effective, and can improve mathematical representation skills.

PISA research on Space and Shape content in the test consists of problems of space and shape, changes in relationships, numbers and probabilities. This study aims to identify the mathematical literacy skills of grade IX junior high school students in solving PISA questions with the content of Space and Shape. The subjects in this study were students of class IX A SMP Negeri 5 Kepanjen with an average age of 15 years. This type of research in this research is descriptive research with a qualitative approach. Data collection conducted in this study is a test method and interview method. Based on the results of data analysis and discussion, it was found that only 2 students or 8.3% of students who had mathematical literacy skills were able to reach level 5.

Mathematics is very closely related to the habits that exist in society. The habits that exist in society can be called a culture. The concept or aspect of mathematics related to culture is called ethnomathematics. Ethnomathematics can also be used as teaching materials that can attract students' interest in mathematics, because students will find it easier to learn science that is directly related to real life. Thus, ethnomathematics is very important in mathematics learning activities so students can learn between mathematics and culture, and know the cultural activities that exist in the surrounding community. In this study, the ethnomathematics of the tumpeng and the Tumpeng Sewu Banyuwangi ritual, which is one of the cultures in Indonesia, will be described as well as utilizing the results of their research into ethnomathematic Students’ Worksheets (LKS). Ethnomathematics obtained are activities of counting, counting, and measuring, as well as some mathematical concepts such as algebra, arithmetic, and geometry.

Ethnomathematics is the study of the relationship between mathematics and culture that found in society. This research was conducted at the GESIBU Blambangan Banyuwangi gate. The purpose of this study was to describe ethnomatematics form at the Blambangan GESIBU Gate and arrange it into the research product in the form of ethnomatematic-based student worksheets (LKS). This research is a qualitative research with descriptive data analysis. There are three data collecting technique being used, those are observation, interview, and documentation The subject of this research were four people, namely cultural observers, archaeologists, builders, and carvers. The results showed that there were an ethnomatematics in the arrangement of shapes and sizes for each component of the gate from its roof, body, foot and the carving. The shape and size from each gate component contain ethnomatatics, such as two-dimensional figure, solid figure/geometry, geometric transformation (reflection, dilation, and rotation), and arithmetic sequence patterns

Etnomatematika merupakan sebuah kegiatan yang dilakukan oleh sekelompok budaya dimana tanpa mereka sadari telah menerapkan konsep matematika. Dalam hal ini etnomatematika merupakan jembatan antara matematika dan budaya. Penelitian ini bertujuan untuk mendeskripsikan etnomatematika pada pembuatan batu bata merah Dusun Bayat Wringinpitu Banyuwangi dengan menghasilkan suatu Lembar Kerja Siswa (LKS). Subjek penelitian adalah 3 orang pembuat batu bata merah Dusun Bayat. Jenis penelitian ini adalah penelitian kualitatif dengan pendekatan etnografi. Metode pengumpulan data yang digunakan yaitu observasi dan wawancara. Hasil dari penelitian ini menunjukkan bahwa adanya konsep matematika pada pembuatan batu bata merah meliputi konsep menghitung, mengukur, membilang, mendesain, kesebangunan dan kekongruenan, segmen garis, bangun datar dan bangun ruang. Kata kunci: Etnomatematika, Pembuatan Batu Bata Merah, Lembar Kerja Siswa

Geometri merupakan cabang ilmu matematika yang dipelajari siswa. Teori yang mengungkapkan kemampuan dan proses berpikir geometri siswa adalah teori van Hiele dan teori berpikir Jean Piaget. Jenis penelitian yang digunakan adalah penelitian deskriptif kualitatif. Subjek penelitian ini yaitu siswa kelas XII di salah satu SMA Negeri di Kabupaten Jember yang berada pada level deduksi informal. Tujuan dari penelitian ini yaitu untuk menganalisis proses berpikir siswa SMA level deduksi informal dalam menyelesaikan soal dimensi tiga berdasarkan tahapan Wallas. Hasil penelitian ini menunjukkan bahwa siswa pada level deduksi informal dapat memahami informasi terkait apa yang diketahui pada tahap preparasi. Pada tahap inkubasi, siswa pada level deduksi informal membutuhkan waktu untuk menentukan rumus yang tepat. Pada tahap iluminasi, proses berpikir siswa level deduksi informal diawali dengan menyelesaikan soal menggunakan rumus yang diketahui kemudian sebagai bantuan untuk menyelesaikan soal. Pada tahap verivikasi, siswa level deduksi informal memeriksa kembali hasil penyelesaian yang telah dilakukan akan tetapi tidak menuliskan kesimpulan. Kata kunci: Proses Berpikir Geometri, Level Deduksi Informal, Tahapan Wallas.

Ethnomatematics is mathematics that is practiced by cultural groups, such as rural and urban communities in carrying out certain cultural activities. Culture can be in the form of works such as buildings that have certain characteristics. Mathematics with the application of culture will make it easier for students in the learning process. This study aims to determine the ethnomatematics of Jabung temple in Jabung village, Probolinggo and as a material for making student test packages in the form of questions. This type of research is qualitative research with an ethnographic approach. Data collection methods used were observation and interviews. This study shows that there are mathematical concepts in the Jabung temple including rectangle, triangle, circle, rhombus, tube, beam, similarity, congruence, translation, reflection, dilatation. The results of this study were student test packages for class IX SMP / MTs. which contains ethnomatematics in Jabung temple. Keywords: ethnomatematics, jabung temple, test packages

Higher order thinking skill (HOTS) becomes important thing and issue in teaching and learning, especially in Mathematics. By using HOTS, students could solve the complicated problems and situation that could be used in real life. So that, the students could be ready to encounter high technology developing and industry revolution 4.0. Then, students could compete with foreign students. The purpose of this study is to describe the higher order thinking skills’ students in proving geometry theorem. This study uses qualitative research and conducted to the undergraduate students. The result of this study shows that the highest HOTS score equal to 80 and the lowest HOTS score equal to 30, then the average of HOTS score is 62. The subjects with low score, only try to analyse the statement without clear reason. The subjects with medium score begin to analyse and evaluate the problem with reason although it’s not clear enough. The subjects with high score begin to create new idea in proving theorem although sometimes could explain the reason. At the end, they could draw the conclusions based on the problems.

Brine Tank is a tank that serves to freeze ice blocks. Brine Tank contained salt water to condense water. Numerical analysis and simulation were carried out after a mathematical model of the ice freezing process in the Brine Tank space was formed. The simulations used in this study were Matlab and Fluent. The matlab graphic result of ice freezing process in brine tank factory ice box with an initial temperature 301 K faster than initial temperatures of 302 K and 303 K. Results graph using freezing MATLAB with a pool temperature 266 K faster than an temperature of 267 K and 268 K. Based on the MATLAB calculation results using the Gauss Seidel iteration method and the exact calculation, it show that the results of the difference between the numerical temperature value of each node and the exact temperature value of each node is less than 0.001

Ethnomatematics is a science used to understand how mathematics is adapted from a culture. The purpose of this study is to dig ethnomatematics on the making of batik tulis Kangkung Setingkes and create a student worksheet in accordance with the curriculum 2013. This type of research is qualitative with ethnographic approaches. The subject in this study amounted to seven people. Data Collection using observation methods, interviews, and documentation. Data collection results are analyzed descriptively. Based on the analysis of data from the observation and interviews, obtained ethnomatematics in the process of making batik in the Setingkes Kangkung. The meaning of Ethnomatematics is the concept of algebraic and geometric concepts. Algebraic concepts include counting, measuring, and masing and geometry concepts, such as point, line, angle, construction, congruation, and Geometry transformation (translation, rotation, reflection, dilation). Ethnomatematics in this study were made as student worksheets for class VII of comparative material and the XI class of geometry transformation material.

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 problems regarding slerek boat. This research is a type of descriptive research with a qualitative approach. The research subjects were 8thH grade students of SMPN 1 Muncar, which amounted to 28 students. Data retrieval using test questions and interview activities. From the results of data collection, the results show that the ability of 8thH grade students tends to be able to solve questions at the evaluation level. This can be seen from the results of the test questions where there are 1 student who can solve the question of creation level (C6), 22 students can solve the question of the level of evaluation (C5) and 5 students can solve the level of analysis (C4). Based on the results of interviews, students who can solve the question level C5 have good ability in analyzing problems, can explain the settlement process both orally and in writing, besides that it’s also able to make a hypothesis and test the hypothesis made previously

In this research a mathematical model will be developed for the distribution of air pollutants. The model is built on the basis of momentum equations and mass continuity equations solved using the finite volume method. Based on the model obtained, the effect of wind speed and initial concentration on the distribution of pollutants in the air will be analyzed. An air pollutant with a certain concentration released through the chimney into the atmosphere will undergo a process of transportation and transformation. The characteristics of emission sources such as concentration when the emission and wind speed around the chimney really determine the spreading of the concentration. The case study in this research is located in the Paiton-Probolinggo Steam Power Plant area. The analysis of the distribution of pollutants was solved numerically using the Gauss Seidel iteration method assisted by MATLAB software and simulated using a CFD approach assisted by FLUENT software. The results obtained in this research indicated that the greater the wind speed around the chimney, the lower the concentration of SO2 pollutants in the air, while the effect of the initial concentration showed that the greater the initial concentration, the greater the concentration of pollutants scattered in the air.

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 (Thousands of Tumpeng). Besides, as one of the dynamic software, GeoGebra software seems to be a great idea to be integrated into university-level geometry learning. To that end, a study was conducted to know how the Osing ways in making tumpeng to be collected and presented during the Tumpeng Sewu. Morover, it can help mathematics education students at University of Jember to do a better way in making sense of three-dimensional shapes concepts. After doing some research phases, the result of the statistical analysis shows the differences between pre-test and post-test score. In addition, a positive response related to the use of GeoGebra is achieved and the use of GeoGebra during geometry space learning can help in setting up effective geometry learning.

This research aims to determine the tofu product distribution transportation model at Taufik Tofu Factory . This type of research is applied research with a quantitative approach. The method used to solve transportation problems in this study is the Modified Vogel’ s Approximation Method (MVAM) and optimized using the Modified Distribution (MODI) method. The results of this study indicate that the application of MVAM at the Taufik Tofu Factory provides a more minimum solution for calculating transportation costs, both in equilibrium and non-equilibrium problems. MVAM provides the same transportation costs as the optimal solution for the simplex method, which is equal to Rp1.164.911,00 for equilibrium problems and Rp2.176.838,00 for unequal problems. These results have been tested for optimism using MODI and better than the real cost calculations issued by the factory.

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 interview. Research subject are four farmers in Sidomulyo Jember. The result of data collection were analyzed descriptively. As the result of this research visible farmer’s activity such as design activity, measure activity, and calculate activity. The activity starts from the beginning of planting to the harvest.

Industrial Revolution 4.0 made everything connected with technology. In this case, the use of technology on the learning process could improve TPACK skill. The aim of this research was to produce an interactive learning media in the form of 3D animated story with Lectora Inspire and Plotagon on direct and inverse proportion subject that can be accessed online on computer or android. This media was designed based on Problem Based Learning model where 3D animated story was used to illustrate the problems and explained them until the students found the direct and inverse proportion formula. This research employed Research and Development (RnD) that used ADDIE model which consist of six phases, they are analyze, design, development, implementation, and evaluation. The result showed that the interactive learning media and its user manual book were categorized very high valid category with correlation coefficient α equal to 0,86 and 0,97, percentage of the students responses was 88,44% which means that the media in practical category. Based on the test result, the comprehension of the concepts was improved. This meant that the media was effective. In general, the media was rated valid, efficient, and effective. This means the media is feasible to be used in mathematics learning.

Hasil belajar matematika adalah penilaian hasil proses belajar matematika yang dinyatakan dalam bentuk angka, huruf, atau simbol yang dapat mencerminkan hasil yang telah dicapai oleh siswa atau anak dalam periode tertentu [1]. Dalam prosesnya hasil belajar dapat dipengaruhi oleh beberapa faktor. Intelegensi dan task commitment merupakan salah satu faktor intern yang dapat mempengaruhi hasil belajar. Penelitian ini mengkaji pengaruh kemampuan intelegensi dan task commitment terhadap hasil belajar matematika siswa kelas XII Man 1 Jember, serta mencari tahu manakah faktor yang lebih dominan diantara keduanya. Dalam penelitian ini metode pengumpulan data menggunakan metode dokumentasi dan kuesioner (angket). Pengambian sampel menggunakan teknik Proportionate Stratified Random Sampling yang mana jumlah sampel yang digunakann yaitu sebanyak 169 siswa. Berdasarkan proses analisis diperoleh hasil yaitu Kemampuan intelegensi dan task commitment siswa secara parsial (individu) ataupun bersama-sama mempengaruhi hasil belajar matematika siswa, dengan persamaan garis regresi Y = -30,575 + 1,140X1 + 0,288X2 + ei. Kemampuan intelegensi memilki pengaruh lebih dominan yaitu sebesar 5,6%, sedangkan task commitment memiliki pengaruh sebesar 3,1% Kata Kunci: Hasil Belajar Matematika, intelegensi, Task Commitment