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Rangkiang Mathematics Journal
Published by Universitas Negeri Padang
ISSN : 27160726     EISSN : 27160734     DOI : https://doi.org/10.24036/rmj.v1i1
Core Subject : Education,
Mathematics Other
Rangkiang Mathematics Journal (RMJ) is a prestigious vision journal which focuses on publishing research, and advance literature study in mathematics and mathematics education. The scope of this journal includes: mathematics teacher profesionalisme, Realistic Mathematics Education, Design/Development Research in Mathematics Education, High Order Thinking Skills in Mathematics, STEM (Science Technology Engineering Mathematics) Education, Classroom Action Research, Technology in Mathematics Learning, Etnomatematics, Lesson Study for Learning Community, Assessment in mathematics learning, Psychological Theories in Mathematics Education, Mathematical Physics, Mathematical Analysis, Mathematical Biology, Mathematical Industry and Finance, Stochastic, Modeling and Simulations, Operational Research, Algebra, Modern Graph Theory together with Applications to Other Fields of Mathematics, Computer Science, Statistics, and Combinatorics.
Arjuna Subject : Matematika - Matematika (Lain-Lain)
Articles 7 Documents
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Search results for , issue "Vol. 1 No. 2 (2022): Rangkiang Mathematics Journal" : 7 Documents clear
Analysis of Mathematical Communication Ability in Terms of Student's Numerical Ability Suci Indah Sari; Kurnia Rahmi Yuberta
Rangkiang Mathematics Journal Vol. 1 No. 2 (2022): Rangkiang Mathematics Journal
Publisher : Department of Mathematics, Universitas Negeri Padang (UNP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (771.044 KB) | DOI: 10.24036/rmj.v1i2.7

Abstract

Abstrac- This research is motivated by the low mathematical communication skills of students. Students have difficulty in expressing problems into mathematical notation and performing arithmetic operations and re-expressing mathematical descriptions. This is related to the students' numerical ability. Therefore, this study aims to describe students' mathematical communication skills in terms of high, medium and low numerical abilities. The type of research used is descriptive qualitative research. The subjects in this study were students of class X IPA-1 SMA N 1 Kec. Lareh Sago Halaban which consists of 6 students with 2 students each with high, medium and low numerical abilities. The instruments used in collecting data in this study include the researcher as the main instrument, and supporting instruments in the form of numerical ability tests, tests of students' mathematical communication skills and interview guidelines, with data collection techniques carried out by tests and interviews. The data analysis technique used is the Miles and Huberman concept, namely data reduction, data presentation and conclusion drawing. Checking the validity of the data used is triangulation technique. The results showed that subjects with high numerical abilities were easier to interpret and communicate mathematical ideas and ideas. Subjects with moderate numerical ability tend to be less capable and have little difficulty in interpreting and communicating mathematical ideas. And subjects with low numerical ability tend to be unable to interpret and communicate mathematical ideas.
Description of Grade VII Students'Concept Understanding on Set Topic Miftahul Rezki; Ronal Rifandi; Fridgo Tasman; Veggi Yokri; Yerizon
Rangkiang Mathematics Journal Vol. 1 No. 2 (2022): Rangkiang Mathematics Journal
Publisher : Department of Mathematics, Universitas Negeri Padang (UNP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (665.442 KB) | DOI: 10.24036/rmj.v1i2.9

Abstract

This research has the aims to explain about the understanding of students mathematical concepts on set topic. This research is a descriptive research whose population is 7th grade students with a sample of 94 students. The instrument used in this research is a test question regarding the set material which contains indicators of mathematics conceptual understanding. The result of the test analysis show that as many as of students with exellent concept understanding, of students with good concept category, of students with sufficient category, of students with low concept criteria, and of students with most low concept understanding criteria.
A Case Study of Prospective Teacher Students' Views on the Position of Mathematics on Human Civilization Anisyah Pratiwi Putri; Yulyanti Harisman; Wahyu Hidayat; Lukman Harun
Rangkiang Mathematics Journal Vol. 1 No. 2 (2022): Rangkiang Mathematics Journal
Publisher : Department of Mathematics, Universitas Negeri Padang (UNP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (489.278 KB) | DOI: 10.24036/rmj.v1i2.10

Abstract

In everyday life, mathematics plays an important role, both as a tool, language, mindset, and knowledge, such as numeration systems, currency exchange tools, and so on. Therefore, we should know the role or position of mathematics in human civilization. The selected research is qualitative with a case study method. Two students were selected to be research subjects from five classes in the mathematics education study program. The instrument used in this study was an open interview. Each student is asked questions about their knowledge of the position of mathematics in human civilization. The data analysis used in this research is thematic analysis. The results showed that there were four categories of how mathematics education students responded to the position of mathematics in civilization. The categories are theoretical history student, religious history student, contextual history student, and scientific history student. The four categories will be described in detail in this paper.
The Effect of Dividend Policy on Stock Prices of LQ-45 Company in the Indonesia Stock Exchange Wella Kurnia; Muhammad Subhan; Defri Ahmad
Rangkiang Mathematics Journal Vol. 1 No. 2 (2022): Rangkiang Mathematics Journal
Publisher : Department of Mathematics, Universitas Negeri Padang (UNP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (586.504 KB) | DOI: 10.24036/rmj.v1i2.12

Abstract

An investment choice is a dividend policy. Either the company's gains will be given to shareholders as dividends, or they will be maintained as earnings to finance future investments. The dividend payout ratio and dividend yield are the dividend policy indicators utilised in this study. This study seeks to examine the impact of dividend payout ratio (DPR) and dividend yield on the stock prices of LQ-45 businesses listed on the Indonesia Stock Exchange. Multiple linear regression analysis is employed. The results indicated that the dividend payout ratio and dividend yield had no effect on the stock prices of the LQ-45 companies listed on the Indonesia Stock Exchange. According to multiple linear regression analysis results, obtained sig value (0.606) > α (0.05).
Mathematical Model of Effect of Yellow Virus on Tomato Plants Through Bemisia tabaci Insects Using Verticillium lecanii Fungus Nada Atifah; Dewi Murni; Rara Sandhy Winanda
Rangkiang Mathematics Journal Vol. 1 No. 2 (2022): Rangkiang Mathematics Journal
Publisher : Department of Mathematics, Universitas Negeri Padang (UNP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (580.361 KB) | DOI: 10.24036/rmj.v1i2.14

Abstract

The Yellow virus is a virus that causes tomato plants to die. The insect vector Bemisia tabaci spreads this virus. The goal of this study is to identify the shape of a mathematical model of the influence of yellow virus on tomato plants via the insect Bemisia tabaci and the fungus Verticilliun lecanii, as well as to interpret the results of the mathematical model analysis. This is referred to as basic research. This study employs a descriptive method in which theories are analysed in relation to the topics to be discussed, and these theories are based on a literature review. Stability analysis is carried out using Routh-Hurwitz criteria. It indicates that the disease-free equilibrium point is asymptotically stable when Λt=μtN and the endemic equilibrium point is asymptotically stable for d1>e1, d2>e2 and a1>(a1)2+(a3)2a0)/(a3a2 ). The model simulation shows that if the efficacy of Verticillium lecanii is high, the population of infected tomato plants, as well as the population of Bemisia tabaci, will go extinct.
Development of Powtoon Animation Video Learning Media on Circle Materials at UPT Senior High School 06 South Solok Suryani Salfitri; Sofia Edriati; Dewi Yuliana Fitri
Rangkiang Mathematics Journal Vol. 1 No. 2 (2022): Rangkiang Mathematics Journal
Publisher : Department of Mathematics, Universitas Negeri Padang (UNP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (508.952 KB) | DOI: 10.24036/rmj.v1i2.15

Abstract

The research is a research and development that purpose to produce Powtoon animation video learning media on circle material. In addition, this study purpose to determine the validity and practicality of Powtoon animation video learning media on circle material. The development model used is the Plomp model. This learning media was created using the Powtoon application. The instruments used are validity sheets, practicality questionnaires, and interview guidelines to determine the validity and practicality of learning media. Based on the validation results on the development of Powtoon animation video learning media, the percentage is 86,31%. While the results of the practicality of teacher and students obtained a percentage of 93,2%. Thus, the Powtoon animation video learning media on the circle material is declared to be very valid dan very practical to use in learning.
Validity of Interactive Learning Media Using Sparkol Videoscribe on Limits of Algebra Functions for Class XI IPS 1 SMAN 12 Padang Miranty Novita Sari; Sefna Rismen; Lita Lovia
Rangkiang Mathematics Journal Vol. 1 No. 2 (2022): Rangkiang Mathematics Journal
Publisher : Department of Mathematics, Universitas Negeri Padang (UNP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (508.887 KB) | DOI: 10.24036/rmj.v1i2.16

Abstract

The development of IT in the 21st century has become the main complement in every learning activity such as using learning media. Learning media is a tool that can help the learning process so that learning objectives are conveyed. This study aims to produce interactive learning media using Sparkol Videoscribe on valid algebraic function limits. This research is a Research and Development (R&D) research with a four-D (4-D) development model. The subjects in this study were students of class XI IPS 1 SMAN 12 Padang. The data collection technique used a validation sheet. The results of this study are: Validity of interactive learning media using Sparkol Videoscribe which is designed to be very valid with the percentage results obtained 95.99% with a very valid category. Based on the results of the study, it can be concluded that the validity of interactive learning media using Sparkol Videoscribe is valid and feasible to use on the material limit of algebraic functions for class XI IPS 1 SMAN 12 Padang.

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