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Dhanar Dwi Hary Jatmiko
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KADIKMA
Published by Universitas Jember
ISSN : 20850662     EISSN : 26863243     DOI : -
Core Subject : Education,
Mathematics
KadikmA (p-ISSN: 2085-0662 dan e-ISSN: 2686-3243) adalah jurnal nasional bidang Matematika dan Pendidikan Matematika yang diterbitkan oleh Program Studi Pendidikan Matematika, FKIP, Universitas Jember. Kadikma terbit 3 kali dalam setahun pada bulan April, Agustus dan Desember. Jurnal Matematika dan Pendidikan Matematika (Kadikma) berfokus pada penelitian matematika murni, matematika terapan, dan pendidikan matematika melalui artikel yang relevan. Jurnal Matematika dan Pendidikan Matematika (Kadikma) menyambut baik setiap artikel tentang penelitian matematika murni, penelitian matematika terapan, penelitian pendidikan matematika di dalam kelas yang relevan, mengevaluasi dan melaporkan praktik pendidikan guru dalam pembelajaran matematika, meninjau masalah topikal dan melaporkan keberhasilan dalam pendidikan matematika.
Arjuna Subject : Matematika - Matematika Terapan
Articles 7 Documents
 1 
Search results for , issue "Vol 12 No 1 (2021): April 2021" : 7 Documents clear
PEMODELAN MATEMATIKA ALIRAN UDARA PADA PARU-PARU AKIBAT PENYAKIT CORONAVIRUS DISEASE 2019 (COVID-19) Setiawan, Yogi -
Kadikma Vol 12 No 1 (2021): April 2021
Publisher : Department of Mathematics Education , University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/kdma.v12i1.23677

Abstract

The bronchial airways are an important part of the respiratory system, it is not uncommon for the bronchi to experience disturbances, one of the disorders due to coronavirus diseases (Covid-19). Coronavirus diseases (Covid-19) are what cause narrowing of the bronchial tubes so that they will interfere with the speed of air flow. This airflow speed will be modeled with mathematical language. The mathematical model of air flow velocity in this study is formed based on equations of momentum equations which are then solved by the finite element method. Speed ​​analysis Air flow was simulated using MATLAB and FLUENT software. The problems studied are the effect of the narrowing diameter, initial velocity, and viscosity on the air flow velocity. Based on the research results show that the smaller the narrowing diameter and the viscosity of the incoming air, the greater the airflow velocity, while for the greater the initial velocity, the greater the resulting airflow velocity. Keywords: Coronavirus Diseases 2019 (Covid-19), bronchial, lungs, airways, finite element method.
The IMPROVING STUDENT ACTIVITIES AND LEARNING OUTCOMES THROUGH RECIPROCAL TEACHING STRATEGIES WITH AUDIOVISUAL MEDIA Munawaroh, Binti
Kadikma Vol 12 No 1 (2021): April 2021
Publisher : Department of Mathematics Education , University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/kdma.v12i1.23387

Abstract

The research is about classroom action research in class XI MIPA 2 SMA Negeri 3 Bondowoso in the 2019/2020 school year. Data collection methods in this research are observation, documentation, and tests. The data obtained are student interest in learning, teacher activities and student learning activities during the learning process and learning outcomes in cycle I and cycle II. Student learning activity data obtained from observations. Student learning activities were analyzed descriptively. While the completeness of students' mathematics learning outcomes was obtained from the postest results. Classical student learning activities have increased in each activity indicator observed from cycle I to cycle II. This can be seen from students who do activity indicators, the percentage increases from cycle I and cycle II, from 73% to 93%. The increase in completeness of student learning outcomes occurred in each cycle, namely 31.5% in cycle I to 89.6% in cycle II. Based on the results above, it shows that the Reciprocal Teaching Strategy with Audiovisual Media can be used as an alternative to learning that can make students more active and can understand mathematical concepts in order to improve learning activities and student learning outcomes.
PROFIL BERPIKIR KREATIF SISWA SMP KELAS VIII DALAM MENYELESAIKAN MASALAH SEGIEMPAT DITINJAU DARI GAYA BELAJAR Ningsih, Egha Fitriyah
Kadikma Vol 12 No 1 (2021): April 2021
Publisher : Department of Mathematics Education , University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/kdma.v12i1.22884

Abstract

The purpose of this study was to describe the creative thinking profile of grade VIII junior high school students in terms of learning styles in solving quadrilateral problems. This research is a descriptive study using a qualitative approach. The subjects of this research were students VIII A at SMPN 1 Genteng, namely two students from each different type of learning style. Collecting data using questionnaires, test methods, and interview methods. Students' creative thinking is categorized into four indicators, namely fluency, flexibility, originality, and elaboration. The results showed that students in visual learning styles could fulfill all indicators of creative thinking, namely fluency, flexibility, originality, and elaboration. Auditory learning style students can fulfill three indicators of creative thinking, namely fluency, originality, and elaboration.
ANALISIS REPRESENTASI MATEMATIS SISWA DALAM MENYELESAIKAN MASALAH MATEMATIKA BERDASARKAN TAHAPAN KRULIK DAN RUDNICK DITINJAU DARI ADVERSITY QUOTIENT DEWI, SETYA
Kadikma Vol 12 No 1 (2021): April 2021
Publisher : Department of Mathematics Education , University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/kdma.v12i1.23841

Abstract

This research purpose to describe the mathematical representation abilities of students based on the Krulik and Rudnick stages in terms of students' AQ. This research type is qualitative descriptive research. The research location is in SMAN Darussholah Singojuruh with the subjects of class XI MIPA 3 and XI MIPA 7 as many as 30 students. The data collecting methods used test and interview methods, with research instruments, such as Adversity Response Profile (ARP) questionnaire, mathematics test questions on linear program material, interview guidelines, and validation sheets. The subjects selected as interview respondents were two students from each level of AQ who had significant differences in ARP scores (scores between AQ Climber, Camper, and Quiter), as well as based on the timeliness and accuracy of students' answers. Based on the test result data analysis and interview data analysis, the following results were obtained, such as 1) Climber students could solve linear program questions based on Krulik and Rudnick stages coherently, and be able to used forms of verbal representations, visual representations, and mathematical expressions properly and correctly; 2) Camper students could solve linear program questions based on Krulik and Rudnick stages coherently but had not been able to use forms of verbal representations, visual representations, and mathematical expressions properly and correctly; 3) Quitter students had not been able to solve linear program questions based on Krulik and Rudnick stages correctly and had not been able to use their verbal representation, visual representation, and mathematical expression skills properly.
DIMENSI METRIK SISI PADA KELUARGA GRAF TANGGA Adawiyah, Robiatul; Prihandini, Rafiantika Megahnia
Kadikma Vol 12 No 1 (2021): April 2021
Publisher : Department of Mathematics Education , University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/kdma.v12i1.24810

Abstract

Misalkan G adalah graf terhubung dan sederhana, dinotasikan sebagai , dengan adalah himpunan titik dan adalah sebuah sisi. Jarak antara titik v dan sisi e dinotasikan sebagai Titik membedakan dua sisi jika Himpunan titik W dari graf terhubung G adalah generator dimensi metrik sisi pada G jika untuk setiap dua sisi dari G dibedakan oleh beberapa titik dari . Dimensi metrik sisi merupakan kardinalitas minimum dari semua genetor dimensi metrik sisi pada G yang dilambangkan dengan . Pada Penelitian ini, akan diteliti dimensi metrik sisi pada beberapa keluarga graf tangga yaitu graf tangga dan graf tangga miring untuk
Pengembangan Paket Tes Berbasis Hihgher Order Thinking Skills (HOTS) Pokok Bahasan Theorema Phytagoras kusuma, rhema nadya
Kadikma Vol 12 No 1 (2021): April 2021
Publisher : Department of Mathematics Education , University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/kdma.v12i1.23816

Abstract

Lack of students' skills in answering questions that require analysis, evaluation, and creativity so that in learning they cannot answer questions that require higher-order thinking skills. This results in the level of thinking of students in Indonesia is still low, as seen from Indonesia's ranking in the TIMSS in 2015. One of the efforts made to improve these higher thinking skills is by using the HOTS test package. This type of research is a development research with the Thiagrajan or Four D Model which aims to describe the process and results of developing HOTS-based test packages for eighth grade students on the Theorema Pythagoras material which is valid, practical, and effective in training students' higher order thinking skills. The method used in this research is the test method to determine the validity and effectiveness of the test package and the questionnaire method to determine practicality. The results of this study are in the form of students' achievements in analyzing, evaluating, and creating in accordance with higher-order thinking indicators with good interpretations. The HOTS-based test package, the subject of Pythagorean Theorema, produced in this study is valid, practical, and effective and can be used to improve students' higher order thinking skills. Keywords: Test Package, Pythagorean Theorem, Higher Order Thinking Skills (HOTS)
OPTIMALISASI KEUNTUNGAN PADA PRODUKSI TEMPE DENGAN PENERAPAN LINEAR PROGAMMING DI KECAMATAN BANJAR KOTA BANJAR JAWA BARAT Jatmiko, Dhanar Dwi Hary; Oktavianingtyas, Ervin; Isnasari, Suci
Kadikma Vol 12 No 1 (2021): April 2021
Publisher : Department of Mathematics Education , University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/kdma.v12i1.24809

Abstract

Soybean is one of the main food commodities after rice and corn. Tempe is a traditional food made from soybeans. Tempe is widely produced by small and medium industries. This study aims to determine the maximum benefits obtained in the District of Banjar, Banjar City, West Java Province in producing tempe. This type of research is a descriptive study with a qualitative approach. By using the probably sampling method, take a random sample. Determination of the sample is taken in 3 tempe productions with different tempe production income. By determining the decision variables, objective functions, and constraint functions by linear programming methods. In Tempe production in the Banjar District, Banjar City, West Java, the maximum profit was Rp. 29.257.080 and the maximum income was Rp. 28.862.790. The maximum profit and income are obtained from a large workforce so that it can produce a lot of tempe production and the cost of depreciation of the tool is small. The more tempe production, the more revenue obtained.

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