bluuebunny/crossref_metadata_2025_split huggingface dataset:
Student’s mathematical skills in solving vector connection analysis
Authors: Senjayawati E , Kadarisma G , Bernard M 
Published: October 2019

Abstract
This research aims to learn and analyze the capability of the student’s mathematical material connection with vector analysis. The Data collected are the result of test instruments and interview result with several students. The method of this research uses descriptive qualitative method. The subject of this research is Siliwangi Teachers’ Training Students who have taken material vector analysis. Based on the Data from the analysis of the test results of the mathematical connection of the problem indicator, the first indicator percentage is Obtained items, namely finding the relationship between the various concepts of representation and procedures, then understanding the relationship between mathematical topics, the presentation is 41.25%. The second indicator of understanding the equivalent representations of the same concept, the presentation is 67.5%. The third presentation indicator, using mathematics in other fields of study or in daily life is 65%. As for the fourth indicator, use an evaluation of the relationship between mathematical topics and the mathematical topic outside is 47.5%. The results of the interviews show that students sometimes forget to use formula prerequisite concepts as material.
The effectiveness of Geogebra-assisted direct instruction learning in improving students’ mathematical communication skill viewed from academic level
Authors: Zetriuslita  , Nofriyandi  , Istikomah Endang 
Published: October 2019

Abstract
The aim of this study was to identify and analyze the effectiveness of utilizing Geogebra in improving students’ mathematical communication skill viewed from academic level. This study is a mixed method research which combines both quantitative and qualitative methods with sequential explanatory strategy. The population was the second semester students of Mathematics Education and used purposive sampling technique. The result of this study showed that there was effectiveness of using Geogebra in improving students’ mathematical communication skill viewed from their academic level. The students felt that their skill improved and developed through Geogebra-assisted Directed Instruction learning.
Development of innovative teaching and learning module in linear algebra course assisted by Maple
Authors: Novtiar C , Fitrianna A Y 
Published: October 2019

Abstract
The aim of this study is to develop an innovative teaching and learning module in Linear Algebra assisted by Maple. This study used Research and Development (R&D) with 4D (Define, Design, Development and Dissemination) model as its methodology developed by Thiagarajan, but in this study, the methodology is limited up until Development stage only. Two instruments were used in this study: expert validation sheets and students response sheets. These instruments were used to determine the validity of this module. Validity analysis on three expert validator gave draft I as the result meanwhile validity analysis on the students response gave draft II as the result. In this study we used 4 months research on 2015 Mathematics Education Department students, IKIP Siliwangi. The result of this study show that expert validity learning module is said to be valid with the results of validation from three expert validators having a value of 4.1 on a scale of 5 with very high validity of 58.82%. Limited trial for students showed a value of 3.44 on a scale of 5 with moderate validity of 63.16%.
Achievement of students mathematical resilience through problem based learning model with metacognitive approach
Authors: Hutauruk A JB , Darmayasa J B , Priatna N 
Published: October 2019

Abstract
This paper discusses the effect of the Problem Based Learning model with the Metacognitive approach (PBLM) on achieving students mathematical resilience. This study also discusses the interaction between learning models with mathematical prior knowledge towards mathematical resilience abilities. This research is a quantitative study, with two classes as research subjects namely the experimental class and the control class. The research instrument uses a scale of mathematical resilience, interview guidelines, and observation sheets. Research findings obtained include: (1) the learning model used does not have a significant difference to the achievement of mathematical resilience, both overall and based on the mathematical prior knowledge (MPK) (2) the achievement of mathematical resilience abilities of students who get learning with PBLM learning models is not significantly better than students who get conventional learning as a whole or based on MPK, and (3) there is no effect of interaction between the learning model used with MPK on achieving students’ mathematical resilience abilities.
Gender and mathematical abstraction on geometry
Authors: Fitriani N , Nurfauziah P 
Published: October 2019

Abstract
This research is conducted due to low mathematical abstraction ability of junior high school students, since that mathematical abstraction is an important skill for both male and female students so that it is considered important to study gender factors for mathematical abstraction abilities. The objective of this research is to find out whether there is a significant difference between male and female mathematical abstraction abilities after using scientific approach supported by Excel VBA. This research was conducted to 16 female students and 15 male students of 9th grade at one of the junior high schools in West Bandung, Indonesia. The method in this study is quasi experimental by comparing the abstraction abilities of male and female students after being through by scientific approach assisted by Excel VBA. The instrument of this research is 3 questions about mathematical abstraction questions. The results of this study indicate that there are significant differences in mathematical abstraction between male and female students for some indicators after using the Scientific approach assisted by VBA Excel, this means the Scientific approach which assisted by Excel VBA can show the differences of mathematical abstraction between male and female students.
Optimal control for the use of botanical fungicides in the spread of plant diseases
Authors: Amelia R , Mardiyah M , Nahar J , Anggriani N , Supriatna A K 
Published: October 2019

Abstract
One of the main obstacles in crop cultivation is the occurrence of fungal infections. Fungal spores can spread due to direct contact between susceptible hosts and infected hosts, which can be controlled using botanical fungicides. We constructed a mathematical model of the growth of logistics on the spread of plant diseases. From this model, we show the value of the Basic Reproduction Number (ℜ0) of plant diseases transmission. The value of ℜ0 is obtained by finding the largest eigenvalue of the next generation matrix. The results obtained show that when ℜ0 is greater than one (ℜ0 > 1), the endemic equilibrium point will be stable. However, if ℜ0 is less than one (ℜ0 < 1), the endemic equilibrium point is unstable. In addition, the results of this discussion indicate that using botanical fungicides can reduce the infected host population. We provide numerical simulations to describe the results of the analysis obtained.
Relationship of mathematical thinking ability to entrepreneurial work styles in the work environment in the industrial age 4.0
Authors: Hendriana H , Putra H D 
Published: October 2019

Abstract
The industrial era 4.0 emphasizes the pattern of digital economy, artificial intelligence, big data, robotic, and destructive innovation phenomena whose challenges are far more severe. The work style that is in accordance with these conditions is the work style of an entrepreneur who has the elements of being able to anticipate change, visionary, think strategically, flexibly, initiate change, be oriented towards the future. The thought process that is expected to form individuals to get used to the entrepreneur’s work style includes the process of mathematical thinking. Research examines the relationship between the mathematical thinking ability and entrepreneur’s work style. The research method uses descriptive correlational with a quantitative approach. The research subjects consisted of 55 employees at one of the private universities. The instrument is a mathematical thinking ability questionnaire and an entrepreneur work style questionnaire. The conclusion is that there is a relationship between the mathematical thinking and the entrepreneur’s work style. The mathematical thinking ability significantly affects the entrepreneur’s work style. Relations that occur are categorized as strong and unidirectional. The better the individual’s mathematical thinking ability lead to the better the individual entrepreneur’s work style. The mathematical thinking ability in the research subject is dominant with a score of 4, meaning that employee involvement in organizational development can be relied upon. The entrepreneur’s work style in the research subject is also dominant with a score of 4, meaning that the work style of the employee supports in facing the challenges of the organization in the industrial era 4.0.
Developing Mathematics Learning Materials Based on CO-PROL to Improve Cadets’ Learning Outcomes
Authors: Astriawati N , Wibowo W , Pratama W 
Published: October 2019

Abstract
This research’s aims to produce applied mathematics learning materials for Nautical Science grade III based on CO-PROL (Cooperative On Problem Based Learning) models which is valid, practicable and effective.This study was a research and development (RnD) with Branch (ADDIE) model which is consisted of 5 (five) steps, those are: (1) Analysis, (2) Design, (3) Development, (4)Implementation, and (5) Evaluation. The quality of learning resouce is determined based on Nieveen criteria, including validity, practicality, and effectiveness. The subject of this research were 36 cadets of Nautical Science Yogyakarta Maritime Academy. The research instrument included validation and observation sheets for learning implementation, questionnaires for lecturers and cadets, and the instrument of effectiveness of learning resouces. The data analysis technique is a quantitative descriptive technique.The result shows that the teaching materials are valid, practicable, and effective in terms of improving cadets’ learning outcomes
Improving mathematical lateral thinking ability of high school students through quantum learning based on creative problem solving
Authors: Julita  , Darhim  , Herman T 
Published: October 2019

Abstract
The aim of this study is to comprehensively analyse the improvement of mathematical lateral thinking ability of high school students as an outcome of quantum learning based on creative problem solving, both viewed as a whole and each level of initial mathematical ability (high, medium, and low), and gender (male and female). This study used a quasi-experimental method with a pretest-posttest control group design. The study population was high school students in the city of Bogor, while the sample was taken from four classes in a school. The data obtained through tests of lateral thinking skills and mathematical initial ability data, as well as the results of observations and interviews. The results showed that students who received quantum learning based on creative problem solving had a higher mathematical lateral thinking ability than students who received direct learning, whether as a whole and each level of initial mathematical ability or as every gender.
Using mathematics education game based ICT: why children like to play game?
Authors: Rahayu C , Putri RII , Zulkardi  , Hartono Y 
Published: October 2019

Abstract
The purpose of this study to create a product of learning media based ICT in the from of mathemmatics education games. Mathematics education games is a software to learn mathematic especially made for kindegarden to help learning process in 2013 curicullum. This research methode use design research with three cycles. In this cycle describe about six young childrens tested wiht small group in research for the second step after literature riview. The result of studyis got that by the issue of improvement in the process of presenting the game so it will improve the design and validity and it will be tested. Interestingly, the student didn’t relize that the process is math learning and the curoisity to solve the game is improve. The student never use this kind of ICT before. Next, by improve skill and knowledge that is got during the game as a strating point that will be continue to the other activity that center in the curiousity earlychildhood.
The design of IQF-oriented ARCS-based learning model
Authors: Syahputra E , Utami D R 
Published: October 2019

Abstract
This article is a summary of some second year research reports of the three years research plan financed by Directorate of Research and Community Service (DRCS). This research aims to develop a learning model based on Attention, Relevance, Confidence and Satisfaction (ARCS) theory oriented towards Indonesian Qualification Framework (IQF) that was applied to mathematical statistics course. The stages of development of this learning model were following Plomp’s learning model development process. Plomp’s model has three stages namely: (1) preliminary stage; (2) prototype stage; (3) assessment stage. After went through experts validation process, appeal validation, and several revisions, in this second year, the implementation of this research had stepped on the beginning of assessment stage, limited trial. At this stage, technical assessment was carried out using practicality and effectiveness tests. Main focus of this stage is on field trials to find out whether the prototype model and all learning tools that have been produced are practical and effective. The field trials were conducted at three universities in North Sumatera, namely Undergraduate and Graduate School of State University of Medan, Undergraduate and Graduate School of Muslim Nusantara Medan University and Graduate School of Asahan University. This paper is only reporting the field trial’s result done in Undergraduate School of Mathematics Education Program in State University of Medan. In State University of Medan, the trial was held twice. First was in class A followed by 21 students and second was in class B followed by 40 students. From the results of the first and second trials obtained that all of the learning tools consist of student textbook, lecturer hand book, student work sheets, and other supporting tools indicated high validity. Moreover, there is an enhancement of students’ ability to understand about mathematical statistics. Highest score in the first trial significantly increased from 80.5 to 94.5 in the second trial. While lowest score also significantly increased from 40,5 to 58,0 and average score increased from 63.5 to 74.4 in the second trial.
Creative thinking ability based on learning styles reviewed from mathematical communication skills
Authors: Marzuki  , Asih ECM , Wahyudin  
Published: October 2019

Abstract
This study aims to obtain the explanation of mathematical creative thinking skills based on visual and kinesthetic learning styles from mathematical communication skills. The subject of this study is a collection of scores on mathematical creative thinking abilities, learning styles and mathematical communication skills of 26 students of the Laboratory High School UPI, tenth-grade (14 students of visual learning styles and 12 students of kinesthetic learning styles). This study is a comparative causal study. Analysis of data using ANCOVA because in this study involved one dependent variable namely the ability of interval-scale creativity and two independent variables namely category-scale learning style and interval-scale mathematical communication skills as well as covariates. The results of the study show that;1) there is a linear relationship between mathematical communication skills and creative thinking abilities, which that the assumption of ANCOVA is fulfilled;2) there are differences in creative thinking skills between students who have a visual learning style with students kinesthetic learning styles without regard to mathematical communication skills, and based on the average creative thinking abilities of with kinesthetic learning styles higher than visual learning styles;3) there is a simultaneous influence between mathematical communication skills and learning styles towards creative thinking abilities.
Effectiveness of the application of learning models collaborative problem solving against the ability to solve mathematical problems in middle school students
Authors: Suhandri  , Juandi D , Kusumah YS 
Published: October 2019

Abstract
The purpose of this study is to test the effectiveness of the application of collaborative problem-solving learning to students’ problem-solving abilities. This research is a quasi-experimental study with a non-equivalent control group design. The sample used in this study consisted of 75 students consisting of 37 students in the experimental class and 38 students in the control class in one of Pekanbaru Riau Middle School, Indonesia. The instrument in this study was the student’s initial ability test before being given treatment and tests after being given the Collaborative Problem Solving learning treatment. In this study found that learning Collaborative Problem Solving models are effective for improving the mathematical problem-solving abilities of junior high school students from students who receive conventional learning.
Metaphorical thinking approach assisted geogebra to improve connection mathematical ability of junior high school students
Authors: Rhamawati W F 
Published: October 2019

Abstract
This research is motivated by the low mathematical connection ability of students, with the aim of the study is to examine the improvement of junior high school students mathematical connection ability through learning using Geogebras software-assisted metaphorical thinking approach. The method in this study is an experimental method with a posttest-pretest control group research design. The research test instrument consisted of 5 test questions of mathematical connection ability. The population of this study was all junior high school students in Kabupaten Bandung Barat, while the sample was one of junior high school at Kabupaten Bandung Barat. The experimental class obtained learning with the Geogebra software-assisted metaphorical thinking approach, and the control class gained regular learning. The data obtained from the results of the normalized gain test, which were processed through normality tests, and Mann-Whitney test using IBM SPSS 23. The results of the study showed that the achievement of the two classes was still in the moderate category, although the increase in mathematical connection ability between students get learning using the GeoGebra software assisted metaphorical thinking approach is significantly better than students who get regular learning.
Students’ academic self-concept the constructivism learning model
Authors: Zulkarnaen R 
Published: October 2019

Abstract
Students’ beliefs and attitudes towards mathematics influences learning process. In other words students who have a positive disposition towards mathematics tend to study and learn mathematics seriously and confidently. Students have the abilities to assess and perceive, and assess themselves in solving mathematical problem, comparing their learning process with other students, communicating with teachers or other students, academic achievement. Self-perception related to academic aspects is called academic self-concept (ASC). This study aims at investigating aspects of students’ ASC in the constructivism learning model. This study is experimental in nature and was conducted in a public senior high school in Bogor, West Java, Indonesia. The sample of this research consists of 10th-grade students. The instrument used in this research covers ASC questionnaire, and the data were analyzed by using one-way ANOVA. The results show that learning models encourage students to construct mathematics knowledge independently through activities in real-world observation, contextualization, and collaborative influencing the self-assessment in grade and effort dimension, peer-evaluation of academic ability, self-evaluation with the external standard.
Exploration of ethnomathematics on the kampung naga indigenous peoples
Authors: Hermanto R , Wahyudin  , Nurlaelah E 
Published: October 2019

Abstract
Ethnomathematics is a study that observes how certain groups of people understand, articulate, and use mathematical concepts or ideas in their lives. The indigenous people of Kampung Naga have a diversity of cultures, traditions, and value systems that are still well cared and maintained until today. This cultural activity is patterned, structured, and has a form in everyday life and has become a belief that is embedded in the form of local wisdom. This study aims to explore the concept of ethnomathematics that emerged and was pragmatically involved in the daily life activities of the Kampung Naga indigenous people based on a review of aspects of mathematics. This research is a qualitative study using ethnographic models.
Mathematical resilience analysis of senior high school students
Authors: Zanthy L S , Kusuma Y S , Soemarmo U 
Published: October 2019

Abstract
The aim of this study is to analyze the mathematical resilience of high school students. The instrument used The Norm Reference Value (NRV), which consisted of 42 items. This Resilience Test consist of 6 indicators, that is: 1) Diligent, confident, working hard and not easily giving up on problems, failures and uncertainties; 2) Desire to socialize, easily provide assistance, discuss with peers, and adapt to their environment; 3) Bring up new ideas/ways and find creative solutions to challenges; 4) Using experience of failure to build self motivation and self control; 5) Showing curiosity, reflecting, researching, utilizing various sources; 6) Having language skills, controlling themselves and being aware of their feelings. The resilience analysis based on a comparison of the average value of each indicator with a reference value that has been determined in NRV. The results showed that all indicators were in medium category.
Statistical reasoning levels of students in prediction tasks
Authors: Sari Rufiana Intan , Sa’dijah Cholis , Subanji  , Susanto Hery 
Published: October 2019

AbstractStatistical reasoning is a major requirement in the era of big data. Therefore, there is a need to research this statistical reasoning. One important study in statistical reasoning is the levels of statistical reasoning. The levels of statistical reasoning are based on the construction of a conceptual framework. This research aimed to describe seven levels of students’ statistical reasoning in predicting data. The subjects of this research were 40 students of the second semester taken from two different classes. This was conducted to fulfill all levels of reasoning. At first, the subjects were given a test, and then seven students were selected to be interviewed related to the levels of statistical reasoning, respectively. Data triangulation was done to maintain the validity and reliability of the data generated. There are seven levels of statistical reasoning in predicting data, namely, the levels of pre-idiosyncratic, idiosyncratic, verbal, transitional 1, procedural, transitional 2, and integrated processes.