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Konstanta: Jurnal Matematika dan Ilmu Pengetahuan Alam
Published by Universitas Katolik Widya Karya Malang
ISSN : xxxxxxxx     EISSN : 29875374     DOI : 10.59581
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Materials Science & Nanotechnology
Sub Rumpun Ilmu IPA: 1. Fisika 2. Kimia 3. Biologi (dan Bioteknologi Umum) 4. Bidang Ipa Lain Yang Belum Tercantum Sub Rumpun Ilmu MATEMATIKA: 1. Matematika 2. Statistik 3. Ilmu Komputer 4. Bidang Matematika Lain yang Belum Tercantum Sub Rumpun Ilmu KEBUMIAN DAN ANGKASA: 1. Astronomi 2. Geografi 3. Geologi 4. Geofisika 5. Meteorologi 6. Bidang Geofisika Lain yang Belum Tercantum
Arjuna Subject : Fisika dan Astronomi - Fisika dan Astronomi (Lain-Lain)
Articles 62 Documents
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Instalasi Gama Rain Filter Dalam Meningkatkan Akses Air Bersih Pada Masyarakat Pedesaan (Studi Kasus Pada PT Wujudkan Mandiri Air) Labibah Izzati Firdaus; Lia Nirawati
Konstanta : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 1 No. 3 (2023): September : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1066.514 KB) | DOI: 10.59581/konstanta-widyakarya.v1i3.878

Abstract

Indonesia is a country that has potential water resources due to high rainfall but is very vulnerable to water crises. This fact shows the great urgency of the need for clean water. One effective solution to deal with this is through the use of rainwater. Harvesting rainwater is an effective step because Indonesia itself has high rainfall so that during the rainy season the product from PT Wujudkan, namely Gama Rain Filter, will collect water and in the dry season it will be used for daily needs. The purpose of this study is to find out about the implementation of the gamma rain filter in increasing access to clean water in rural communities. The research method used is a qualitative approach to gain a deep understanding of the effect of the Gama Rain Filter installation in increasing access to clean water in rural communities. The findings of this study are that with this superior technology, Gama Rain Filter helps people save water resources for drinking purposes during the rainy season. Therefore, existing funds can be used to obtain food sources that contain lots of protein
Analisis Kemampuan Pemecahan Masalah Matematis Siswa Dalam Menyelesaikan Soal Materi Bangun Datarsiswa Kelas IV SD 1 Burikan Ahmad Rifqi; Siti Noor Arofah; Nuris surroyah; Fitriyah Amaliyah
Konstanta : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 1 No. 3 (2023): September : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1191.309 KB) | DOI: 10.59581/konstanta-widyakarya.v1i3.879

Abstract

This research aims to analyze mathematics learning, especially in number material, as well as classify students' mathematical problem solving abilities. , interviews and documentation. 12 students have no value, 5 students have moderate values and 3 students have very high scores, the questions given are 5 all description questions. In making mathematical problem solving questions we use indicators namely: 1.) Understanding new mathematical knowledge through problem solving, 2.) Designing mathematical models, 3.) implementing and adapting appropriate strategies to solve problems, 4.) completing models, 5.) monitor and reflect on the process of solving mathematical problems. Of the 5 questions, they are then assessed with an assessment rubik according to the points specified in the question grid used. The results of the assessment were categorized into 3 categories, namely high, medium category, and low category in class IV SD 1 Burikan.
Pengembangan Modul Berbasis SETS (Science, Environment, Technology, And Society) Untuk Meningkatan Hasil Belajar Siswa Pada Materi Sistem Koloid Kelas XI IPA SMA Ir. Luciyana Br Sirait; Lisnawaty Simatupang
Konstanta : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 1 No. 3 (2023): September : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (694.215 KB) | DOI: 10.59581/konstanta-widyakarya.v1i3.882

Abstract

This study aims to determine the feasibility of SETS (Science, Environment, Technology, And Society) based modules on colloidal system, determine student learning outcomes after using SETS-based modules in learning and student responses to the modules. This study uses a 4-D development model consisting of define, design, development, and dissemination. This research was conducted at SMA Negeri 11 Medan which was carried out for 7 months. The feasibility of module was seen through a feasibility questionnaire for media and material experts based on the BSNP standard with a Likert scale of 1 to 5. Validation data obtained from media and material experts on SETS-based modules obtained an average percentage of 83.58% with the category valid/worthy. Student learning outcomes were obtained through the calculation of N-Gain test, which was equal to 0.74 in the high category and the average posttest score of students was 84.67. Student responses to the SETS-based module obtained an average percentage of 91.24% with a very high questionnaire interpretation. Based on the results obtained by the researcher, it can be concluded that this SETS-based module is appropriate for use in colloidal learning with a high student learning success rate and student responses that fall into very good criteria.
Pengembangan Media Pembelajaran E-Komik Berbasis Problem Based Learning (PBL) Terhadap Kemampuan Pemecahan Masalah Irianti Yolan; Rahman Haryadi; Wandra Irvandi
Konstanta : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 1 No. 3 (2023): September : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/konstanta.v1i3.896

Abstract

The purpose of this study was to develop Problem Based Learning (PBL) based E-Comic learning media on Problem Solving Ability that is valid, practical, and effective on student learning outcomes in statistics material in class XII at SMA Negeri 1 Sungai Laur. The method used is the ADDIE method. The subjects of this study were 29 class XII students of SMA Negeri 1 Sungai Laur, 3 material and media experts. The instruments used in this study were in the form of material expert validation sheets and media expert validation sheets, teacher response questionnaires, student response questionnaires and post-test questions based on the results of the research that had been carried out obtained the results of validation of E-Comic learning media based on Problem Based Learning (PBL). ) Regarding Problem Solving Ability has a validity level of 91.22% with very valid criteria, the practicality level of learning media is 89.60% with very practical criteria and the level of effectiveness of learning media is 93.10% with very effective criteria.
Efektivitas Pembelajaran Problem Solving Ditinjau Dari Gaya Belajar Siswa Jety Oktavia; Anis Umi K; Rika Pristian F.A
Konstanta : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 1 No. 3 (2023): September : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/konstanta.v1i3.909

Abstract

Mathematics is one of the subjects taught at all levels from basic education to higher education, which has a significant role in preparing students to have the ability to think logically, analytically, systematically, critically and creatively, as well as have the ability to work together. One of the activities in learning mathematics at school is through problem solving. Problem solving aims to see students' understanding of a material. Mathematical problem solving ability is a very important part of learning mathematics. However, in reality, the problem-solving ability of junior high school students' mathematics is still very low. From these problems, then one of the lessons that can improve the ability to solve mathematical problems is Problem Solving learning. One of the factors that influence differences in problem solving ability is learning style. Learning styles have a close relationship and influence on the learning process in order to achieve learning goals. With students knowing their learning style, learning Problem Solving can be done easily. The subjects of this study were students of class VIII A MTs Plus Sunan Drajat Kedungsantren Bojonegoro. The purpose of this study was to determine the effectiveness of Problem Solving learning on mathematics learning outcomes when viewed from students' learning styles. The type of research used is quantitative research with the One Group Pretest-Posttest Design. The results showed that testing the data on mathematics learning outcomes with the Paired Sample T-Test stated that the t_count value was -9.726. The t_count value is negative, because the pretest average value is lower than the posttest average value. In this case, the t_count value can be positive so that it becomes 9.726. Meanwhile, the value of t_table with α = 0.05 and degrees of freedom (dk=n-1) with 24 students is 1.714. Then it can be seen that t_count > t_table, then H0 is rejected and Ha is accepted, meaning that there is a significant difference. So it can be concluded that the application of the Problem Solving learning model is quite effectively carried out in the teaching and learning process for class VIII A students of MTs Plus Sunan Drajat Kedungsantren on the material of geometric shapes on the flat sides of cubes and blocks.
Analisis Kemampuan Pemecahan Masalah Matematika Kelas XI SMAN 55 Jakarta Tahun Ajaran 2022/2023 Casilta Widianti; Muhammad Giri Tarmizi; Syafira Rizqi Pratiwit
Konstanta : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 1 No. 3 (2023): September : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/konstanta.v1i3.914

Abstract

Problem solving abilities can be used in everyday life to find solutions and solve mathematical problems. The ability to solve mathematical problems in class XI students at SMAN 55 Jakarta for the 2022/2023 academic year is the goal of this research. The research subjects were 36 class XI students consisting of 18 female students and 18 male students at SMAN 55 Jakarta. The research instruments used were interviews, observation, and documentation. The data analysis technique used is qualitative data analysis, namely data reduction, data presentation, drawing conclusions. The research results obtained show the importance of the teacher's role in helping students to solve problems in learning mathematics.
Profil Komunikasi Matematis Siswa Tunanetra Martina Retno; Nurmaningsih Nurmaningsih; Wandra Irvandi
Konstanta : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 1 No. 3 (2023): September : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/konstanta.v1i3.929

Abstract

The research method used in this research is descriptive qualitative research with the aim of the research being to describe the mathematical communication profiles of blind students. This research was conducted at SLB Negeri Rasau Jaya which is located at Education Street No. 2, Desa Rasau Jaya Satu, Rasau Jaya District, Kubu Raya Regency, West Kalimantan Province, using the K13 curriculum. This study will describe the mathematical communication of SLBN Rasau Jaya students in the Cartesian coordinate material seen from aspects (1) The ability of students to give answers using everyday language in explaining ideas, situations and mathematical relations, orally or in writing with real objects, pictures, graphics and algebra. (Aspects of Written text); (2) Students' ability to connect real objects, pictures, and diagrams into mathematical ideas. (Drawing Aspects); (3) Students' ability to express everyday events in language or mathematical symbols. (Aspects of Mathematical Expression). In this study, the subjects of the study were all students of class VIII SLB Negei Rasau Jaya, which consisted of three students with low vision criteria. The data collection tools used in the research were observation sheets, interviews, and written tests. The mathematical communication skills of blind students have good abilities in the aspect of drawing. While the writing aspect was not fulfilled properly and the mathematical expression aspect did not meet the indicators at all.
Analisis Pemahaman Konsep Perkalian Matriks Dalam Pembelajaran Matematika Kelas 11 Jvana Wahyu Pratami; Nabila Nabila; Rina Sunaryani
Konstanta : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 1 No. 3 (2023): September : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/konstanta.v1i3.944

Abstract

The research was conducted to determine students' ability to solve problems with matrix material. This study used descriptive qualitative research and took 20 class XI students of SMK Bina Bangsa as research objects. The techniques used to collect research data are 3 instruments in the form of question descriptions and questionnaire forms. Data analysis in this study used data reduction, data presentation, and drawing conclusions. As a result of this study, students of class XI at SMK Bina Bangsa did not do well in mastering the matrix material and understanding the concepts. The reason students find it difficult to master matrix concepts is because students do not have the necessary material such as fraction operations and negative number operations. The lack of practice questions is also a factor in students' lack of understanding of the determinants of matrices.
Pengembangan Media Pembelajaran Video Interaktif pada Materi Spldv terhadap Kemampuan Pemahaman Matematis Siswa Kelas X Maria Ayu Fitri Lestari; Muchtadi Muchtadi; Wandra Irvandi
Konstanta : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 1 No. 3 (2023): September : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/konstanta.v1i3.964

Abstract

This study aims to produce interactive video learning media in mathematics learning to improve students' mathematical understanding that is valid, practical and effective. This research is a development research where the research procedure uses a 4D design, namely (Define, Design, Development, and Dissemination) but this research only reaches the Development stage due to limited time, costs and research subjects. The subjects in this study were 26 class X students of SMAN 1 Nanga Tayap. The instrument used by the researcher was a validation sheet to see the validity of interactive video media, a response questionnaire was used to see the practicality of interactive video media and a pilot test was used to see the practicality of interactive video media in improving students' mathematical understanding abilities. Based on the validation of the three validators on learning interactive video media, it can be declared valid with an average index percentage of 79.69% with valid criteria. Material expert validation was declared valid with an average index percentage of 78.88% with valid criteria. Meanwhile, media expert validation was declared valid with an average percentage index of 79.28% with valid criteria. The level of practicality with an average percentage of teacher responses is 80%, with very valid criteria and an average percentage of student responses is 82.66% with very practical criteria. From the results of completing the teacher and student response questionnaire, interactive video learning media for students' mathematical understanding can be stated to be very practical for students. The level of effectiveness of students after using interactive video learning media on mathematical understanding abilities is 80.76% with very effective criteria.
Upaya Pengembangan Sistem Pengelolaan Keuangan Pabrik Tahu PT. TSJ Yang Bersifat Manual Menggunakan “Automatic Excellent Data Validation” Yossy Dumos Herawati; Denada Oktaviani; Mawarni Dyah Nur Halaefi; Rangga Seto Hutomo; Dimas Ido Nofiyanto; Nurma Tambunan
Konstanta : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 1 No. 3 (2023): September : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/konstanta.v1i3.974

Abstract

Preparation of a comprehensive budget is very important for every company, because it will provide benefits in the form of a systematic approach to management policies, as well as facilitate quantitative evaluation of the company's ultimate goals. This study aims to determine and compile a comprehensive budget calculation as a means of internal control in "Tofu Production House UKM". This type of research uses a quantitative method to determine sales data of tofu products, namely white tofu and yellow tofu in the last 5 months, as well as costs in the production process, both direct and indirect costs. The results of the study show that in the process of compiling a comprehensive budget for “Tofu Production House UKM” this method is still used which is very simple and does not pay much attention to the costs incurred as a result of the production process. This can be seen from the results of the preparation of a comprehensive budget. From this research, it is hoped that it can be used as a means of controlling and managing the finances of "Tofu Production House UKM" by making a comparison between the comprehensive budget and its realization.

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