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Konstanta : Jurnal Matematika dan Ilmu Pengelatuan Alam
Published by International Forum of Researchers and Lecturers
ISSN : 29875315     EISSN : 29875374     DOI : https://doi.org/10.59581/konstanta.v3i3
Core Subject : Science, Education,
Biochemistry, Genetics & Molecular Biology Chemistry Earth & Planetary Sciences Immunology & microbiology Mathematics
Konstanta : Jurnal Matematika dan Ilmu Pengetahuan Alam; e-ISSN : 2987-5374, p-ISSN : 2987-5315 adalah jurnal yang ditujukan untuk publikasi artikel ilmiah yang diterbitkan oleh International Forum of Researchers and Lecturers. Jurnal ini adalah Jurnal Matematika dan Ilmu Pengetahuan Alam yang bersifat peer-review dan terbuka. Bidang kajian dalam jurnal ini termasuk sub rumpun Ilmu IPA, Ilmu Matematika, Ilmu Kebumian dan Angkasa. Jurnal Konstanta menerima artikel dalam bahasa Inggris dan bahasa Indonesia dan Jurnal ini terbit 1 tahun 4 kali (Maret, Juni September dan Desember). Berikut adalah ruang lingkup Jurnal Matematika dan Ilmu Pengetahuan Alam Yaitu: 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 : Matematika - Matematika (Lain-Lain)
Articles 225 Documents
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Kemampuan Berpikir Komputasional dalam Memecahkan Masalah Matematika Ahmadsyah Fauzian Rambe; Yahfizam Yahfizam
Konstanta : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 2 No. 3 (2024): September : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : International Forum of Researchers and Lecturers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/konstanta.v2i3.3841

Abstract

Computational thinking is the process of solving issues by using mathematical ideas and concepts. Systems problem solving, data analysis, abstraction, algorithms, and information representation are some of these ideas. The purpose of this study is to determine how mathematical problem-solving techniques for computational thinking function. Systematic literature observation was the research methodology employed in this study. A topic area of interest's existing research as well as pertinent, targeted research questions are found, reviewed, disseminated, and interpreted using the systematic literature review (SLR) technique. Journals may be found and evaluated methodically using the SLR approach, with each stage according to preset guidelines or rules.
Pengembangan LKPD Berbasis PBL Untuk Meningkatkan Kemampuan Komunikasi Matematis Siswa SMP Negeri 1 Tanjung Morawa Saragih, Agnes Liska Rosadani; Hasratuddin Hasratuddin
Konstanta : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 2 No. 3 (2024): September : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : International Forum of Researchers and Lecturers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/konstanta.v2i3.3861

Abstract

The purpose of this research was to produce a worksheet based on problem-based learning that would enhance students' ability to communicate mathematically when working with number pattern content. The quality of this LKPD refers to the effective aspect. This research uses a type of research and development (R&D) with a model developed by Borg & Gall. The subjects in this research were students in class VIII-5 of SMP Negeri 1 Tanjung Morawa with a total of 27 students. The object of this research is teaching materials in the form of PBL-based LKPD. Teacher response questionnaires, student response questionnaires, expert validation sheets, teacher interview question sheets, and tests of mathematical communication competence were the tools employed. Based on the research results, the effectiveness of LKPD can be seen from the achievement of learning completeness with an average individual learning completeness of 88 and for classical completeness of 96.3%. So the LKPD developed is declared "effective". Students' mathematical communication abilities are at a percentage of 90.1%, at high criteria, and it can be noted that for the N-Gain assessment, results were obtained with a student average of 0.74, meaning that there was an increase in students' mathematical communication abilities with high criteria. So, based on the results, it can be concluded that the LKPD developed in this research is valid, effective, and can improve students' mathematical communication skills.
Analisis Nilai SPF Ekstrak Etanol, Fraksi N-Heksana, Fraksi Etil Asetat Dan Fraksi Air Kulit Batang Kawista (Limonia Acidissima Groff) Fenny Wiji Astuti; Tunik Saptawati; Anifatus Sa’adah
Konstanta : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 2 No. 3 (2024): September : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : International Forum of Researchers and Lecturers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/konstanta.v2i3.3869

Abstract

Indtoduction : Free radicals that come from sunlight can cause cell damage and death because they are carcinogenic. SPF is the effectiveness of a sunscreen in protecting the skin from the sun. Kawista stem bark (Limonia acidissima Groff) has potential as a sunscreen. Purpose: to analyze the SPF value of ethanol extract, n-hexane fraction, ethyl acetate fraction and water fraction. Method : Extraction by maceration method with 96% ethanol and fractionation by liquid-liquid extraction method. Phytochemical screening. SPF analysis by spectrophotometric method with the Mansur equation. One-way ANOVA statistical analysis. Results: The SPF values ​​of ethanol extract, ethyl acetate fraction, water fraction and n-hexane fraction respectively along with sunscreen protection categories were SPF 12.77 (maximum protection), SPF 11.77 (maximum protection), SPF 11.67 ( maximum protection) and SPF 7.146 (extra protection). Conclusion: The highest SPF value was found in ethanol extract as a semi-polar solvent. The lowest SPF value was obtained in the n-hexane fraction as a non-polar solvent.
Pengembangan Media Pembelajaran Menggunakan Permainan Tic Tac Toe Pada Materi Trigonometri Hikmah Ayu Retno; Alifa Rizka Utami; Aufadini Bunga Firmansyah
Konstanta : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 2 No. 3 (2024): September : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : International Forum of Researchers and Lecturers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/konstanta.v2i3.3886

Abstract

This study aims to improve students' understanding skills in learning Mathematics, especially in Trigonometry material by using tic tac toe game-based learning media, which is called the Tic Tac Toe game. The Tic Tac Toe game is a type of tic tac toe game in which players mark the spaces in an 8×8 grid with their chips. The player who manages to place 5 tokens using the chips in a row in a horizontal, vertical or diagonal row will win the game. The Tic Tac Toe game is a fun and challenging game for students who play it. Students as players are required to answer the math questions listed on the question cards to be able to place chips into the chip spaces or boxes on the game board. The research conducted was in the form of R&D (Research and Development) development research. This research aims to develop a new product or perfect an existing product (Sugiyono, 2015). This research is an educational research and development study which aims to develop learning resources for educational games by utilizing the Tic Tac Toe game with trigonometry for class XI. The development model used by researchers is the ADDIE (Analysis-Design-DevelopmentImplementation-Evaluation) model which will be carried out in the ADDIE stages. ”. This game media consists of game boards, player chips, game cards and guidebooks. The game Tic Tac Toe is a development of the game Tic Tac Toe in general. Tic Tac Toe games usually only have a 3x3 grid, in contrast to Tic Tac Toe which presents a view with an 8x8 grid so that the scope of players can be even wider. In addition, this game media is also made with a size of 60x68 cm, accompanied by a magnetic plate on the board so that players can attach chips equipped with magnets to the game board. Another difference can be seen from the number of players who can play the game, where in the usual Tic Tac Toe game it can only be played by 2 people, while the Tic Tac Toe game can be played by more than 2 people or in groups.
Efektivitas Pembelajaran Dengan Assesmen Berbasis Kahoot! Terhadap Motivasi Belajar Fisika Mahasiswa Tadris IPA Riris Idiawati; Khoironi Fanana Akbar; Hilya Wildana Sofia; Anis Wildatus Saqinah
Konstanta : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 2 No. 3 (2024): September : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : International Forum of Researchers and Lecturers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/konstanta.v2i3.3918

Abstract

The focus of the problem in this research is the low motivation of students in learning physics. This research is a quantitative study using pre-experiment method, where the research design is one group design pre-test post-test. The sample of this study consisted of 32 students of Tadris IPA KH.Muhtar Syafaat University Blokagung Banyuwangi (UIMSYA). The results showed pretest data on students' physics learning motivation, namely with an average value of 102.13.average value of 102.13 is in the medium category. While the results of the post-test data obtained were 126.50 in the very high category. The N-gain score test results show a value of 0.5 in the medium category. This shows that the use of Kahoot! based assessment is very effective in increasing the physics learning motivation of Tadris IPA UIMSYA students. The results of this study are expected to be one of the innovations in scientific learning, especially physics courses so that students are not easily bored and much more active in learning.
Perbedaan Peningkatan Kemampuan Komunikasi Matematis Siswa yang Diajarkan dengan Model Pembelajaran Tipe Two Stay Two Stray dan Think Pair Share Nita Ernita Simatupang; Asmin Panjaitan
Konstanta : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 2 No. 3 (2024): September : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : International Forum of Researchers and Lecturers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/konstanta.v2i3.3926

Abstract

Based on the observations that have been made, it is shown that students' mathematical communication skills are still relatively low so that an innovative learning model is needed to improve students' mathematical communication skills. This study aims to see whether the improvement in students' mathematical communication skills taught with the Two Stay Two Stray cooperative learning model is higher than the mathematical communication skills of students taught with the Think Pair Share cooperative learning model and to see how the improvement in mathematical communication skills taught with the two models. This study is a study that is included in the quasi-experimental category with a pretest-posttest control group design. The subjects in this study were 62 students in grades VIII-A and VIII-E of SMP Negeri 4 Balige. Based on the research that has been done, the results of the N-Gain test were obtained with an average N-Gain value in experimental class 1, namely 0.813 in accordance with the Gain index criteria in the high category and the average N-Gain value in experimental class 2, namely 0.693 in accordance with the Gain index criteria in the medium category. Based on the research that has been done, because the data is normally distributed and homogeneous, the hypothesis test is carried out using the t-test. Through the t-test that has been done, it was obtained that , namely 2.465>2.000. Therefore is rejected, which means that the increase in mathematical communication skills of students taught with the Two Stay Two Stray cooperative learning model is higher than those taught with the Think Pair Share cooperative learning model.
Analisis Miskonsepsi Siswa pada Materi Asam Basa Menggunakan Two-Tier Multiple Choice di SMA Negeri 4 Gorontalo Asmawati J. Salum; Mangara Sihaloho; Erni Mohamad
Konstanta : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 2 No. 3 (2024): September : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : International Forum of Researchers and Lecturers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/konstanta.v2i3.3956

Abstract

This research aimed to identify students' misconceptions of acid-base material using a Two-Tier Multiple-Choice test at SMA Negeri 4 Gorontalo. It employed a qualitative descriptive approach, and the data collection techniques used were a Two-Tier Multiple Choice test instrument. Additionally, the research subjects were students in Class XI of SMA Negeri 04 Gorontalo, with a total sample size of 70.The research data were obtained from students' responses to the Two-Tier Multiple-Choice test questions.These responses were analyzed based on the students' answer patterns and categorized into three groups: Understood the Concept, Misconception, and Did not Understand the Concept The findings revealed that 10% of students understood the concept, 41% did not, and 49% had misconceptions. This result signified high misconception among studenst in Class XI of SMA Negeri 04 Gorontalo regarding acid-base material.
Kevaliditas Latihan Soal Berbasis AKM untuk Meningkatkan Literasi Numerasi pada Materi Statistika Shela Rahmawati; Nanang Khuzaini; Monica Tita Candra Gerhana
Konstanta : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 2 No. 3 (2024): September : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : International Forum of Researchers and Lecturers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/konstanta.v2i3.3959

Abstract

This research is based on the low numeracy literacy skills of students, which are due to their unfamiliarity with solving numeracy literacy problems and the limited availability of such problems, making it difficult for teachers to provide numeracy literacy problems to students. Therefore, it is necessary to develop math problems that can measure students' numeracy literacy skills. The method applied in this research is Research and Development with the ADDIE model (Analysis, Design, Development, Implementation, Evaluation) without implementing the fourth and fifth stages. The development process starts from the analysis stage, which includes curriculum analysis, needs analysis, and material and problem analysis. After that, in the design stage, a product prototype is designed, and in the development stage, the product is consulted with three experts as validators. Next, the product is tested on students to determine its validity and reliability. The results show that all problems have a validity coefficient greater than , which means that all developed problems fall into the valid category. The developed problems are also highly reliable, with a reliability coefficient of . Therefore, it is concluded that this development research produces 36 AKM-based problems to measure students' numeracy literacy skills in statistics that are valid and reliable.
Pembuatan Pembangkit Listrik Tenaga Sampah (PLTSA) dengan Memanfaatkan Sampah Plastik Sebagai Alat Konversi Energi Dinda Putri Zulfira; Desi Fitriana; Nurjannah Berutu; Nurul Mayanti Fitri; Nurmasyitah Nurmasyitah
Konstanta : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 2 No. 3 (2024): September : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : International Forum of Researchers and Lecturers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/konstanta.v2i3.3961

Abstract

A simple thermal waste generator is a promising solution for managing waste and generating electricity. This study aims to design and develop the tool. Through waste composition analysis, thermal design planning, prototype construction, and tool performance testing, we succeeded in creating an effective prototype. In performance testing, this tool is able to generate enough electrical power to meet daily energy needs on a small scale. Thus, this simple thermal waste power generator shows potential as an effective and environmentally friendly solution. Nevertheless, further research is needed to improve the efficiency and scalability of the tool, as well as to optimize the management of the residue from burning waste.
Penerapan Model Pembelajaran Think Aloud Pair Problem Solving (TAPPS) Berbantuan Video Animasi Untuk Meningkatkan Kemampuan Pemecahan Masalah Matematis Siswa Pada Materi SPLDV Kelas X Henry M. Sibarani; Mukhtar Mukhtar
Konstanta : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 2 No. 3 (2024): September : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : International Forum of Researchers and Lecturers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/konstanta.v2i3.3996

Abstract

This research aims to improve students' mathematical problem solving abilities by using a learning model Think Aloud Pair Problem Solving (TAPPS) with the help of animated videos. The research was conducted at SMA Negeri 1 Sumbul involving 36 class X-G students as research subjects. The type of research used is classroom action research (PTK) with steps, namely, providing an initial test to measure students' mathematical problem solving abilities before taking action, identifying problems in the classroom, planning action, implementing action, namely applying the TAPPS learning model (Think Aloud Pair Problem Solving) With the help of animated videos as a medium for conveying summaries of learning material, observation, giving post tests, data analysis and data reflection. The research was carried out in 2 cycles where each cycle included two meetings, while observation activities were carried out simultaneously with the implementation of actions with the aim of observing the activities of researchers and students during learning activities. The research results showed that after the first cycle of research was carried out, the average student score from the pretest results to the first cycle posttest results increased from 52.56 to 72.94 with the average observation of student and researcher activities being 2.38 and 2.38. In the second cycle, students' mathematical problem solving abilities increased based on the average student score on posttest II, namely 84.62, the results of observations in the second cycle also improved better to 3.23 for student activities and 3.44 for researchers' ability to manage class, apart from that 34 out of 36 students (94%) obtained scores above the KKM (70). These results show that students' mathematical problem solving abilities increased after implementing the TAPPS learning model (Think Aloud Pair Problem Solving) Assisted by animated videos.

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