Learning during the pandemic presents a major challenge for mathematics teachers. In this condition, Teacher must examine effective mathematical teaching practices that support each and every student to develop a deep understanding of mathematics; and developing a positive mathematical identity and strong...

In today’s information and data-driven society, it is vital for an informed citizen to have: (i) working competency in quantitative reasoning, and (ii) and general awareness of math – its true nature, role in society, strengths and limitations, and connections with other disciplines. Mathematics appreciation...

In mathematics and mathematics education, ranges of application are sometimes generalized. This article studies the generalization of the concept on internally dividing points. The ratios of internally dividing points are usually considered in real numbers since the real numbers are naturally corresponding...

Humanity has dealt with pandemics or plagues throughout history. History also demonstrates that in periods of uncertainty there are always guides that remain certain. In response to Covid-19, the Indonesian government’s ‘New Normal’ provided a list of challenges for all educators, who must then adapt...

Let K be a field and Q be a quiver (directed graph), and let A = KQ be the path algebra that corresponds to Q with coefficients in K. An A-module M is a completely prime (c-prime) module in the sense that rm = 0 for one m ∈ M and r ∈ A implies that either r annihilates all M or m = 0. In this paper,...

In this paper, we study the pollutant transport phenomenon using an advection-diffusion equation. To solve the model numerically, we apply the finite difference method. Here we use the second, fourth, and sixth-order explicit finite difference schemes. To validate our numerical models, we compare the...

This research aims to describe the effectiveness and see the tendency of cadets’ perceptions of moodle-based online learning during the Covid-19 pandemic in the Economy Mathematics Course. The research population was all cadets who took the Economy Mathematics Online Course at the Yogyakarta Maritime...

Although the literature has presented the overall effect of the RME approach, no specific studies have analyzed its relationship to the type of mathematical ability being measured. This meta-analysis study was conducted to measure the overall effect of RME and explore its relationship to types of mathematical...

The existence of technology in teaching and learning processes has changed the way how teachers transfer their knowledge to their students. Moreover, pandemic covid-19 has forced the use of technology in learning. The existence of flipped classrooms has given positive effects towards both learning effectiveness...

This article discusses the analysis of dynamic models of the spread of drug addicts with educational effects. This model is modified from the White and Comiskey model by adding populations that have stopped using drugs so that the model will form the type of SURS. Besides, modifications were also made...

During pandemic, learning has transitioned into online learning. This causes Universitas Pelita Harapan (UPH) students in Faculty of Education must be repatriated to their regions and undergo half semester of differential calculus learning in online mode. Therefore, it makes aspects of self-regulated...

The assignment problem is a special case of the linear programming problem in the industrial, business, education, and assignment problems that we often find in everyday life. The assignment problem addresses issues related to the optimal assignment from a variety of productive and different levels of...

In this article, we study linear codes with complementary dual (LCD codes) over the ring 𝔽q + v𝔽q+ v2𝔽q+ ⋯ + vm-1𝔽q, where q = ps; p is an odd prime, s is a positive integer, and vm = v; which generalize the observation of Melakhessou et al. (2018). We give necessary and sufficient conditions on...

This research discussed the portfolio performance evaluation using the Treynor method. The portfolio performance evaluation aims to assess the established portfolio whether had a good performance and suitable to the investment goals. At the research, a portfolio was selected based on the efficient stock...

Climate change in Sumatra island is likely a result of widespread land-use changes by the plantation industry. This study aims to investigate trends in land surface temperatures in Sumatra island. Land surface temperatures from 2001-2020 were downloaded from the National Aeronautics and Space Administration...

The algorithm of general pentadiagonal matrix has been evaluated before for computational purpose. The properties of this matrix on sparse structure are exploited to compute an efficient algorithm. This article propose a new construction of pentadiagonal matrix having centrosymmetric structure called...

The transition from school to college mathematics courses involving advanced mathematics is a challenging task for many students. Undergraduate students in their first year are very often to experience difficulties in understanding mathematical concepts in a setting that emphasizes symbolic algebraic...

Many countries in the world, especially Indonesia, are still experiencing an increase number of Covid-19 cases despite the government has implemented many policies, such as an appeal for self-prevention, physical distancing, quarantine and large-scale social restrictions (LSSR) in several areas. Besides...

In this paper, we consider to analyzed the mathematical reasoning ability of students in solving mathematics problem based on Higher Order Thinking Skill (HOTS). The method of this research is qualitative descriptive. This research consisted of 12 subject. Based on the analysis that mathematic reasoning...

Mathematics, especially calculus, cannot be separated in the field of biology. Mathematical abilities are essential in understanding biological phenomena. However, pre-service biology teachers’ attitudes toward math tend to be negative. For this reason, an interdisciplinary approach is needed so that...

A smartphone-based evaluation media learning management system (S-LMS) is an application that supports teaching and learning activities and online evaluation. S-LMS media is the development of conventional evaluation media using smartphones and internet networks. The purpose of writing this article was...

It is an important task for an actuary in determining an appropriate premium price for each customer with different risks and characteristics. The purpose of this study is to determine the best model for pure general insurance premiums and variables that can affect the amount of pure premiums. One of...

The challenge for teachers during this pandemic is to continue to provide quality learning for their students. All forms of learning that were initially carried out face-to-face must now turn to online learning. One form of learning that is considered effective to be given online is by giving powerful...

The average value at risk (AVaR) is a measuring tool used to assess the worst loss experienced by an investor on a portfolio investment at a certain time. Furthermore. AVaR’s level of confidence needs to fulfill all the axioms regarding the nature of risk for risk-varse investors. This is because the...

Gedhek, a wall material for Using’s house, which is still used in Banyuwangi, Indonesia. The existence of gedhek in The Banyuwangi Community has never been associated with school knowledge. This makes gedhek known only as objects that are dividing the house (wall). Even though the process of making up...

This study is purposed to determine the student’s conceptual understanding and learning self-reliance in New Normal era assisted by Photomath on SLETV materials. This study implements quantitative approach of quasi-experimental design and One Group Pre test-Post test Design. The population of this study...

The aim of this study is to define the student mathematical representation of Grade 11 high school in solving linear programming questions based on David Keirsey’s personality type. This research were analyzed through a qualitative description. The research was conducted at Senior High School 1 Jember....

The purposes of the research is to know the effect of the implementation of e-learning toward Self-Regulated Learning (SRL) to the students of math at Almuslim University. The research used was a quasi-experimental research instrument in the form of a questionnaires sheet. The subject of this research...

The purpose of this research is to develop teaching material of cultural context geometry with GeoGebra which is valid, practical and effective based on the theoretical reviews and its support to enhance higher-order thinking ability. This study is a research and development (R & D) that was developed...

This paper was to describe junior high school students’ argumentative ability mathematically using a visual-formed problem. The type of this research was descriptive with a qualitative approach. The subjects of this research were 19 students of the 7th grade-student of SMPN 6 Inderalaya Utara. A post-test...

This article studied designing a Visual-formed Student’s Worksheet the traditional food context under a mathematical modelling framework. This article only discusses the preliminary stages of the developed students’ worksheet. The preliminary stage covers two steps; there are analysis and design steps....

This article discusses the development of mathematical modeling student’s worksheets with the context of fuel purchase. Design research methods with a development study type was used in the research. The student’s worksheet’s prototype which fulfills the six principles of designing mathematical modeling...

This article studies designing an interactive learning media based on a mathematical modelling framework. This article only discusses the preliminary stage or the initial stage in developing interactive learning media using design research. The preliminary stage covers two steps; there are analysis and...

Traveling salesman problem (TSP) can be applied to distribution problems, namely determining the minimum route from the depot to all customers exactly once and back to the depot. Some constraints can be added to the problem such as time constraints, additional salesmen on the route that is passed, the...

This paper was to describe primary and junior high school students’ perceptions of the fraction concept through their representations. The subject of this research was the 5th grade and 7th-grade students. This research revealed that students who studied varying images could be used to construct the...

The purpose of this research is to describe the mathematical problem-solving skills of Junior High School students through visual question-based mathematical modeling learning. This was descriptive research using a qualitative approach. The subjects were students grade VII/2 of SMP N 6 Indralaya Utara....

This research aims at describing students’ mathematical communication skill through proof-based learning. This research was conducted at a senior high school in Bangka Belitung province involving 29 students. The instructional process and data collection were conducted online using Zoom Cloud Meeting...

The global cases of COVID-19 pandemic extensively increase as in Indonesia as the first two confirmed (positive) cases were reported in 2nd of March 2020 and followed by the first mortality case in 9 days afterwards, 11th of March 2020. In latest situation, the last data collection by author in 5th of...

This research aims to determine the 7th grade-students skills in solving the inverse proportion visual-formed problem through mathematical modeling learning. This research type was descriptive research using a qualitative approach. The subjects of this research were 19 students of the 7th grade-student...

The purpose of this descriptive research was to see the effects of visual-formed problems on junior high school students’ motivation to learn mathematics using a mathematical modeling framework measured using several learning motivation indicators. This research was conducted to 27 students grade VII.2...

The instrument in the form of an essay math test is one of the tools to measure the progress of the learning process or learning outcomes. The essay math test needs to be applied in education because students are trained to be independent, creative, innovative, and improve literacy skills. A good measurement...

Creative thinking skill is one of the important competencies in mathematics that must be possessed by students as a provision for life in the future. But in reality, it is not easy for a teacher to explain for students in primary schools. Through linking the existing cultures around students, Madura...

The type of research used was development research that aims to develop learning content in discrete mathematics courses that are valid, practical, and effective for use in Mathematics Education students. The subjects in this study were students who programmed discrete mathematics courses in the odd...

This study aims to describe the level of students’ digital thinking skills in solving mathematics problems in terms of 21st – century digital skills, referring to the eight levels of digital competence by prioritizing the cognitive domain of students in their measurement. Data collection was carried...

In this paper, we introduce about intuitionistic anti fuzzy vector spaces with respect to t-norm and t-conorm (IAFVSTC). We discuss some properties of IAFVSTC. We investigate IAFVSTC together with characteristic function intuitionistic fuzzy sets (IFS). We obtain properties of some operation and relation...

Based on the Directorate Report General’s Horticulture, the contribution of vegetable horticulture agriculture tends to increase, where the GDP of vegetable horticulture has increased by 9.86%. In 2016, cabbage is a vegetable horticultural commodity that has the highest production amount in Indonesia,...

Let ℤk, k > 1, k ∈ ℕ be a commutative ring with unity, polynomial f = a0 + a1x + ⋯ + anxn ∈ ℤk[x], ai ∈ ℤk. We can construct c(f) = 〈a0,⋯,an〉 be an ideal of ℤk generated by a0,⋯,an. If (a0,⋯,an) = 1 or ai unit of ℤk for i =0,…,n, then c(f) = ℤk, for k composite. For k is prime, because all of the...

Let R be a commutative ring with a non-zero identity, and Z(R) is a set of zero-divisors of R. The total graph of R, denoted TΓ(R), is an (undirected) graph with all elements R as vertices of TΓ(R) and for distinct vertices x, y ∈ R are adjacent if and only if x + y ∈ Z(R). The girth of TΓ(R) is the...

This research aims to describe secondary school students’ mathematical reasoning skills through visual-formed problem under a mathematical modeling framework. This research involved 19 seventh grade students of SMPN 6 Indralaya Utara. Data were collected through a test and interview. Result show that...

Reasoning ability encourages students to think logically, so it is a very important part in learning process. This qualitative descriptive study aims to determine the mathematical reasoning ability of Junior High School students in solving non-routine problems of the two-variable linear equation systems...

In this paper, we introduce the concept of left almost hyperring (R, ⊕, ⊗) together with a partial relation order ≤ such that satisfies some conditions. This structure (R, ⊕, ⊗, ≤) is called by ordered left almsot hyperring (LA-hyperring). Further, we study some useful contiditons for ordered LA-hyperring...

Students’ ability to think logically is needed when making decisions in solving problems, making decisions from existing problems, and processing problems after being given a problem. This study aims to produce a practical differential equation module. This research is part of development research using...

Mathematics and reasoning are two things that cannot be separated because reasoning is needed to understand mathematics and reasoning can be trained through learning mathematics. The purpose of this study was to determine the mathematical reasoning abilities of junior high school students on a two-variable...

The purpose of this research is to know How to process of teaching learning using Brain Based Learning which based on Lesson Study Learning Community as well the effect on students’ reasoning abilities on the material sequences and number series at SMAN 5 Jember. The kind experiment that is used is mixed...

This research aims to describe the impact of using a single image in representation on understanding the concept of fractions. The subjects in this study were six students in grades 4-7. The data collection technique used in this research is interviews conducted on research subjects one by one. Students’...

Mathematics is an important subject for understanding almost every subject whether science and technology, medicine, the economy, or business and finance. Previous research shows that many agricultural students have deficient mathematical skills for their future profession after their education. They...

This study aims to determine the level of validity of applied mathematics electronic teaching materials for the blended learning model in the form of modules (E-Modules) and student activity sheet (E-SAS). The research used the 4D model development method, carried out at the Politeknik Negeri Bali (PNB)....

Mathematics is a universal field of science and has a very important role in human life. However, facts in the field show that students’ reasoning power is still weak in the learning process of mathematics. It is because of one of the Abstract characteristics of mathematics. This feature causes many...

Ijarah Muntahiya Bittamlik (IMBT) is a scheme for the sale of goods or services that combines a sale and purchase contract and a lease agreement ending with the ownership of the goods or services that are the object of the contract in the hands of the tenant. In the IMBT scheme, the tenant makes payments...

Lookback options are path-dependent option, whose payoffs depend on the maximum and minimum value of the underlying assets throughout the duration of the contract. Since the payoffs are calculated based on the asset price during the lifetime of the option, there are no analytic formulas yet to evaluate...

This study aims to describe the early mathematic skills of preschoolers in the understanding division through the idea of “fairness”. The idea of fairness was familiar to children before the division was first encountered formally. The subjects in this study were three children aged 3-5 years. Based...

The purpose of this study was to determine the Generalized Estimating Equation (GEE) analysis as one of the longitudinal data regression methods for composite index data on children’s welfare (CWCI) in West Java Province. GEE analysis uses four different correlation structures to determine the best model,...

Coronavirus is a group of viruses that can cause disease in both humans and animals. The newly discovered coronavirus triggers COVID-19 disease. COVID-19 is now a pandemic that is emerging in many countries around the world, including Indonesia. Several sectors have been affected as a result of this...

Stunting is a kind of chronic nutritional problem among under-five years children that characterized by a shorter height compared to other children of their age. The ordinal logistic regression is one statistical method that used to analyze the ordinal response variable with three or more categories...

The left almost semihyperring (LA) is an algebraic hyperstructure satisfying two axioms, these are the left inverse hyperoperation and the distributive axiom between multiplication and addition hyperoperation. In this article, the concept of fuzzy sets is applied to these structures so that we get a...

This paper discusses the optimal solution for specific types of optimization problems called fuzzy transportation problems using pentagonal fuzzy numbers. Cost value, supply, and the demand for fuzzy transport issues are taken as fuzzy numbers pentagonal. Pentagonal fuzzy numbers are converted to crisp...

The rapid development of world technology has a major influence in the world of education and can be used to support learning activities. Regarding the rapid advancement of computers, statistics learning can be done with many online computer simulations. Computer simulation and visualization in supporting...

This study aims to analyze the misconceptions experienced by students in exponential material. This research was conducted in Class X IPA 1 SMAN 4 Makassar in the odd semester 2019/2020 academic year. The subjects in this study were three students who were selected based on the type of misconception....

The study aims to determine the impact and constraints of the e-learning learning system for Operations Research subject during the COVID-19 pandemic. This research is a descriptive qualitative study that focuses on evaluating learning using online media. This study’s population was the 5th-semester...

The study aims to overcome the overdispersion in the final exam score of Calculus subject. The occurrence of a gap in the score is inseparable from the influence of internal factors and external factors. The internal factors are factors that originate within students themselves. In contrast, external...

This study aims to analyse the skills to understand mathematical concepts in the Probability Theory subject. As a scientific discipline, Probability Theory is one of the statistics study program subjects that require mathematical skills to learn. One of the skills needed for learning is the skill of...

Cognitive ability in this research, are steps that students do in solving problems that deal with problem solving. Cognitive abilities seen from the cognitive level of remembering (C1), understanding (C2), applying (C3), analyzing (C4). The study aims to describe a student’s cognitive capability in gender...

In this work, a deterministic mathematical model of schistosomiasis transmission dynamics is discussed. In rural areas, many people work as a cattle farmer. Cattle farmers in endemic areas are very susceptible to schistosoma worm infection. To study the dynamics of schistosomiasis spread in traditional...

Solving a rational inequalities is difficult for mathematics students. Many of them make a mistake when solving such problem. This research aimed to investigate and categorize a first year mathematics undergraduate student error when solving rational inequalities problem. The data were obtained from...

Investing in the capital market for some investors is a challenge in itself. Investors are required to be able to determine the right combination and proportion of shares when they want to place a number of funds in each share that make up the optimal portfolio. The solution to the optimal portfolio...

In recent developments, the panel data spatial model has penetrated into simultaneous models that do not only move in single models, where the development of this model also indirectly makes the parameter estimation method move in a more complex direction in terms of mathematical proof, also in terms...

The purpose of this study is to compare two treatments, namely the realistic mathematics education approach (RME) and problem-based learning (PBL) towards students’ mathematical problem-solving abilities. To obtain complete information about the comparison of the two models, we also used the non-treatment...

This study aims to determine the effect of Contextual Teaching and Learning (CTL) model based on ethnomathematics on the students’ interest and learning outcomes of class XII SMA Negeri 2 Salahutu in three-dimensional materials. This study used experimental research with Quasi Experimental as the research...

Studies on innovative learning model are currently being carried out by experts to contribute to improving the quality of education and learning. Problem Solving Based Learning Model (PBPM) is one of the new model that the author has developed since 2017-2020. From the development results, this model...

This study aims to: (1) determine whether there is a difference in the mathematical solving abilities of students of class XI MIA SMA Negeri 4 Ambon who are taught using the think pair share (TPS) type of cooperative learning model assisted by geogebra software, the problem based learning model (PBL)...