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Rangkiang Mathematics Journal

RMJ
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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 19 Documents

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The Classical Ramsey Number R(3,4)>8 Using the Weighted Graph Khairul Azmi; Elva; Widia
Rangkiang Mathematics Journal Vol. 1 No. 1 (2022): Rangkiang Mathematics Journal
Publisher : Department of Mathematics, Universitas Negeri Padang (UNP)

At present, research on Ramsey Numbers has expanded to a wider scope, not only between 2 complete graphs that are complementary to each other but also a combination of complete graphs, circle graphs, star graphs, wheel graphs, and others. While the classic Ramsey number still leaves problems that need to be solved. Ramsey number R(3,4) > 8. This means that m=8 is the largest integer such that K_(8) which contains components of a red graph G and a complete blue graph G which is still possible not to get K_3 in graph G and not get a blue K_4 in graph G .The graph K_(8) has a total of 28 edges. There are as many as the combination (28,3) red edge pairs that need to be avoided so as not to get any red K_3 edge pairs. And there are as many as the combination (28,4) edge pairs blue. That needs to be avoided in order not to get a pair of blue K_4 edges. Determining the coloring of the of the graph directly is certainly very difficult, especially if the Ramsey number is getting bigger. It's like looking for a needle in a haystack. Need to use a special method in order to solve this problem. The weighting graph method, where each edge is given weight with a certain value, is able to solve this problem. The weighting graph method is able to display the graph K_8 in the form of a G matrix with the order of 8×8.

The Influence of Scientific Approach with the Socratic Method on Learning Outcomes and Students' Mathematical Critical Thinking Dispositions Anisah; Kurnia Rahmi Yuberta; Ika Metiza Maris
Rangkiang Mathematics Journal Vol. 1 No. 1 (2022): Rangkiang Mathematics Journal
Publisher : Department of Mathematics, Universitas Negeri Padang (UNP)

This research is based on the low learning outcomes and critical thinking disposition of students at MTsN 7 Tanah Datar. The purpose of this study was to determine the differences in the acquisition of students' mathematics learning outcomes after using the scientific approach with the Socrates method with the acquisition of students' mathematics learning outcomes with conventional learning, to find out how students' mathematical critical thinking dispositions after using the scientific approach with the Socratic method. This type of research is quasi-experimental research. The instruments used were tests of students' mathematics learning outcomes, observation sheets, and questionnaires. Based on the results of data analysis, the acquisition of students 'mathematics learning outcomes after using the scientific approach with the Socrates method is better than the acquisition of students' mathematics learning outcomes using conventional learning. Meanwhile, students' mathematical critical thinking disposition in mathematics learning using a scientific approach with the Socrates method is classified as a successful category.

Analysis of Youtube Utilization in Learning Mathematics in the Pandemic Time of Covid-19 Armiati; Okta Vutri Nupus
Rangkiang Mathematics Journal Vol. 1 No. 1 (2022): Rangkiang Mathematics Journal
Publisher : Department of Mathematics, Universitas Negeri Padang (UNP)

The Covid-19 pandemic is sweeping the entire world, including Indonesia, which has resulted in changes to the education system. Face-to-face learning system turns into online learning. Teachers are asked to be creative in using online learning media to achieve learning objectives, one of which is YouTube. This study aimed to analyze the use of YouTube as a medium for learning mathematics during the Covid-19 period. This research is a descriptive study through observation and interviews with teachers and students. The research instrument used student observation sheets, teacher observation sheets, and interview guides. The study results were obtained through descriptive analysis and show that YouTube has significant benefits as a medium for learning mathematics and as the best information seeker during the Covid-19 pandemic.

Forecasting Inflation Rate in Padang City Using Backpropagation Method Atikah; Defri Ahmad
Rangkiang Mathematics Journal Vol. 1 No. 1 (2022): Rangkiang Mathematics Journal
Publisher : Department of Mathematics, Universitas Negeri Padang (UNP)

Desire to maximize economic growth in the Padang City, so it need to know the minimum estimate of inflation, that matter is done so that can anticipate the value of inflation outside the desired rate. This research was conducted to obtain forecasting inflation rates in the Padang City using the Backpropagation method. The data of this research is secondary data. Data obtained through the West Sumatra BPS website about inflation of Padang City in January 2013-December 2019. The results of research obtained a forecasting inflation rates in the Padang City with MSE value is 0.010689.

Mathematical Model of the Number of Smokers Influenced by Migration Factors with Quadratic Root Dynamics in Relapse Conditions Tria Agus Krisan; Media Rosha
Rangkiang Mathematics Journal Vol. 1 No. 1 (2022): Rangkiang Mathematics Journal
Publisher : Department of Mathematics, Universitas Negeri Padang (UNP)

Smoking is a habit that some people likes, but it causes health, economic, social, and environmental burdens not only for smokers but also for others. This study describes a mathematical model of the number of smokers which is influenced by the distribution factor of smokers using the dynamics of the square root in the relapse condition. The population was divided into three subpopulations, namely potential smokers, light smokers and heavy smokers. Based on the results of model analysis, it was found that one endemic equilibrium point of smokers was stable. Environmental influences make there always interactions between potential smokers and light smokers so that there are always smokers. The smaller the interaction between potential smokers and light smokers, the smaller the number of light smokers and heavy smokers.

Saringgong: An Alternative Media for Slow Learner Students in Learning Mathematics Anny Sovia; Yulyanti Harisman; Ronal Rifandi
Rangkiang Mathematics Journal Vol. 1 No. 1 (2022): Rangkiang Mathematics Journal
Publisher : Department of Mathematics, Universitas Negeri Padang (UNP)

The purpose of this study is to describe the traditional Indonesian game (namely Saringgong) as a medium for slow learner students in learning mathematics. Saringgong is a game that utilizes gravels as a medium. This research is a descriptive study with a qualitative approach, the method that used is ethnography. Data were collected by using ethnographic principles, such as interviews, observations, documentation, and field notes. The results of this study illustrate that the traditional game Saringgong can be used as an alternative learning medium for Slow Learner students to practice numeracy skills, increase focus and motivation of students in learning mathematics.

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)

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)

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)

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)

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).

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Ronal Rifandi

Contact Email r.rifandi@fmipa.unp.ac.id

Phone +6282283367954

Journal Mail Official rmj@ppj.unp.ac.id

Editorial Address Jln. Prof. Dr. Hamka, Air Tawar padang Mathematics Department, Faculty of Mathematics and Natural Sciences, Unversitas Negeri Padang

Location Kota padang, Sumatera barat INDONESIA

Abstract

Abstract

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Abstract

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Abstract

Abstract

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Abstract

Abstract

Contact Name
Ronal Rifandi

Contact Email
r.rifandi@fmipa.unp.ac.id

Phone
+6282283367954

Journal Mail Official
rmj@ppj.unp.ac.id

Editorial Address
Jln. Prof. Dr. Hamka, Air Tawar padang Mathematics Department, Faculty of Mathematics and Natural Sciences, Unversitas Negeri Padang

Location
Kota padang,

Sumatera barat

INDONESIA