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All Journal JIPM (Jurnal Ilmiah Pendidikan Matematika) Unisda Journal of Mathematics and Computer Science (UJMC) International Journal of Insights for Mathematics Teaching (IJOIMT) Journal of Science Nusantara
Swastika, Galuh Tyasing
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Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Mathematics Mechanical Engineering

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REPRESENTATION TRANSLATION ANALYSIS OF JUNIOR HIGH SCHOOL STUDENTS IN SOLVING MATHEMATICS PROBLEMS Swastika, Galuh Tyasing; Nusantara, Toto; Subanji, Subanji; Irawati, Santi; As?ari, Abdur Rahman; Irawan, Edy Bambang
International Journal of Insights for Mathematics Teaching (IJOIMT) Vol 1, No 2 (2018)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This research aims at analyzing the representation translation of Junior High School students in solving mathematical questions related to algebra. This research used descriptive qualitative approach. The focus of representation translation used in this research was the external representation which was a verbal translation into diagram, verbal into symbolic, symbolic into diagram, diagram into symbolic, and diagram into verbal. Based on the analysis of research findings, it shows that representation translation of students from verbal, symbolic, and diagram into verbal and diagram was not really mastered by the students. Meanwhile, the representation translation into symbolic was frequently used by the students although they were expected to do other translation rather than symbolic.
Lectora Inspire in Learning Congruence Triangles in Higher Education Sanwidi, Ardhi; Swastika, Galuh Tyasing
JIPM (Jurnal Ilmiah Pendidikan Matematika) Vol 7, No 1 (2018)
Publisher : Universitas PGRI Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (635.63 KB) | DOI: 10.25273/jipm.v7i1.3222

Abstract

The purpose of this study was to determine the use of Lectora Inspire assisted learning, analyze student activities in the learning process, and to find out the improvement of student achievement in triangular congruence material. This study uses an Action Research approach. The study uses two learning cycles. The results of this study are the use of Lectora Inspire assisted learning can increase student activity in the learning process of triangular congruence material. This can be seen from the percentage of student activity from 72.85% to 81.25%. In addition, this learning activity can improve student achievement. This can be seen from the increase in completeness percentage of student learning outcomes from 53.1% to 78.1%.
ARIAS learning model based on a contextual approach to increase the mathematical connection capacity Swastika, Galuh Tyasing; Narendra, Risang
JIPM (Jurnal Ilmiah Pendidikan Matematika) Vol 7, No 2 (2019): Maret
Publisher : Universitas PGRI Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (580.757 KB) | DOI: 10.25273/jipm.v7i2.2984

Abstract

The purpose of this study is to improve the mathematical connection capacity of students in Calculus I by applying the ARIAS learning model based on a contextual approach. The instrument used to determine the increase in students' mathematical connections in this study is the activity observation sheet and the test of learning outcomes. While during the learning process, the discussion with the function material is used. This research has two cycles in which each consists of planning, action, observation and reflection. In the previous learning, the preliminary tests were given to the students, as a previous reflection. The results of pre-reflection learning showed that 63% had not yet completed a score of ≥75. The results of the study show that ARIAS learning models based on contextual approaches can gradually increase students' mathematical connection skills. This is based on the results of increased student activity and the results of an increase in learning tests in cycles I and II. The percentage of student activity is 80.70% (good category). The student's activity is 86.40% (good category) in cycle II. The student's connection capacity in the first cycle is 10.16 (good category) and a score of 12.79 (excellent category) in the second cycle.
Peramalan Harga Minyak Goreng Pada Masa Pemulihan Pandemi Covid-19 Di Pasar Kabupaten Blitar Swastika, Galuh Tyasing; Nada, Luthfi Qathrun; Sanwidi, Ardhi
UJMC (Unisda Journal of Mathematics and Computer Science) Vol 10 No 1 (2024): Unisda Journal of Mathematics and Computer Science
Publisher : Mathematics Department, Faculty of Mathematics and Sciences Unisda Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52166/ujmc.v10i1.4121

Abstract

The impact of Covid-19 is still felt on the unstable economic sector in Indonesia, one of which is cooking oil where the price has soared. DISPERINDAG as a service that has duties, one of which is in monitoring and supervising the price of basic necessities, so knowing the prediction of the price of goods can make it easier for DISPERINDAG to carry out its duties in maintaining the stability of the price of basic necessities, especially those in the market. So the author is interested in researching the forecasting of cooking oil prices during this transition period with the single exponential smoothing method. The data used for the study is daily data on the price of cooking oil without brand in the Blitar Regency market for 426 days from August 1, 2021 - September 30, 2022 then the data can to predict the price of cooking oil in October 2022. The results of the study obtained an alpha value of 0.9 to be the smallest error value with an average MAPE of 7.41% and the predicted results of bulk cooking oil prices in the Blitar Regency market in October 2022 of Rp 12929.97/liter.
Metode Fuzzy C-Means Clustering pada Perkara Perkawinan Pengadilan Agama Blitar Berdasarkan Wilayah Yurisdiksi Swastika, Galuh Tyasing; Aulya, Sona Lutfiatul
Journal of Science Nusantara Vol 4 No 4 (2024): Vol 4 No 4 Desember 2024
Publisher : LPPM Universitas Nahdlatul Ulama Blitar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28926/jsnu.v4i4.1617

Abstract

Pengadilan Agama dan Pengadilan Tinggi Agama yang berpuncak pada Mahkamah Agung sebagai pengadilan tertinggi negara menjalankan yurisdiksinya di Indonesia berdasarkan Undang-Undang Peradilan Agama RI No. 1 Tahun 1974 pasal 1, perkawinan adalah ikatan lahir batin antara seorang pria dan seorang wanita sebagai suami istri dengan tujuan membetuk keluarga (rumah tangga) yang bahagia dan kekal berdasarkan Ketuhanan Yang Maha Esa. Beberapa hal yang diatur dalam atau berdasarkan undang-undang mengenai perkawinan yang berlaku yang dilakukan, antara lain dispensasi kawin dan perceraian. Dispensasi kawin juga dapat diartikan sebagai upaya bagi mereka yang ingin menikah namun belum mencukupi batas usia untuk menikah yang telah ditetapkan oleh pemerintah, sehingga orang tua bagi anak yang belum cukup umurnya tersebut bisa mengajukan dispensasi nikah ke Pengadilan Agama melalui proses persidangan terlebih dahulu agar mendapatkan izin dispensasi perkawinan. Ada beberapa clustering data dan salah satu diantaranya adalah Fuzzy C-Means Clustering (FCM). Fuzzy C-Means Clustering (FCM) adalah suatu teknik pengklasteran data yang mana keberadaan tiap-tiap titik data dalam suatu cluster ditentukan oleh derajat keanggotaan.Pada penelitian ini, metode Fuzzy C-Means Clustering (FCM) dipilih karena, metode Fuzzy Clustering memungkinkan suatu objek menjadi anggota dari suatu klaster atau lebih, sehingga menghasilkan pengklasteran yang lebih teliti. Berdasarkan hasil penelitian, maka dapat disimpulkan perhitungan berhenti pada iterasi ke-27 dengan fungsi objektif sebesar 14011.34. Objek penelitian dibagi menjadi 2 klaster berdasarkan validasi klaster menggunakan partition entropy. Diperoleh klaster 1 terdiri dari 18 kecamatan, dan klaster 2 terdiri dari 7 kecamatan.
Aplikasi Program Linier Menggunakan Lindo Dalam Optimasi Keuntungan Pada Omah Jenang di Kabupaten Blitar Swastika, Galuh Tyasing; Mufliha, Elok Zinatul
UJMC (Unisda Journal of Mathematics and Computer Science) Vol 10 No 2 (2024): Unisda Journal of Mathematics and Computer Science
Publisher : Mathematics Department, Faculty of Mathematics and Sciences Unisda Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52166/ujmc.v10i2.7810

Abstract

Omah Jenang is one of the industries engaged in the production of traditional snacks. Currently Omah Jenang does not yet have guidelines for realizing the formation of the composition of production quantities correctly based on calculations that still use forecasting methods. Therefore Omah Jenang often experiences difficulties in providing raw materials and determining maximum profits. The purpose of this study was to de-termine the optimum yield of profits at Omah Jenang by using the simplex method linear program with the help of Lindo Software. The data used is food production data at the Omah Jenang Home Industry in 2022. The method used in this study is the Linear Pro-gramming simplex method and the Lindo Software application. The results of optimization calculations using the linear programming method and the help of Lindo Software are that the maximum profit in a month is IDR 20,000,000 in producing 800 packages of madumongso. Based on the calculation results it can be concluded that the benefits obtained by using the simplex method with the help of Lindo Software can be obtained maximum results.
Co-Authors Abdur Rahman As’ari Aulya, Sona Lutfiatul Edy Bambang Irawan Mufliha, Elok Zinatul Nada, Luthfi Qathrun Narendra, Risang Sanwidi, Ardhi Subanji Subanji Toto Nusantara