bluuebunny/crossref_metadata_2025 huggingface dataset:
The 5th Seminar Nasional Matematika dan Pendidikan Matematika (SENATIK) 2020
Authors: Rahmawati N D , Muhtarom M , Happy N , Wulandari D , Pramasdyahsari A S , Nursyahidah F , Albab I U , Murtianto Y H , Aini A N , Sutrisno S
Published: October 2020

Preface

The fifth Seminar Nasional Matematika dan Pendidikan Matematika (SENATIK) was held by Mathematics Education Study Program, Universitas PGRI Semarang, Indonesia, in 2020. This seminar has objectives to improve mathematics teaching, to solve the mathematics problem, and to expand mathematics contribution to society.

Freedom learning is a new policy of the Ministry of Education and Culture of the Republic of Indonesia to improve the national education system that seems monotonous. Through freedom learning, it is expected that it can create happiness and a joyful learning atmosphere for both students and teachers. Learning activities will be effective if the learning atmosphere is enjoyable. By having a joyful learning environment and adequate learning facilities, students are expected to be able to construct knowledge and support in generating motivation to learn actively. Also, by giving freedom in carrying out learning through their learning will train and instill a democratic attitude for students and also shape students’ creativity to explore their potential. As technology develops, teachers are expected to use technology for joyful learning. Through the integration of technology in the freedom of learning, it is expected that effective and efficient learning will be created. Therefore, teachers are required to be able to do innovative learning. In view of that, the Mathematics Education Study Program of Universitas PGRI Semarang invites researchers, practitioners, and educators to participate in and contribute to the fifth SENATIK 2020 under the theme “Freedom of Learning: Integration Technology in Mathematics Learning.”

The keynote presentations are provided to show the contribution of mathematics educators in mathematics education towards research and knowledge sharing. We have three keynote speakers, that’s are Prof. Dr. Ratu Ilma Indra Putri, M.Si. (Universitas Sriwijaya, Indonesia). Dr. Irwan Endrayanto Aluiciues, S.Si., M.Sc. (Universitas Gajah Mada, Indonesia), and Dr. Achmad Buchori, M.Pd. (Universitas PGRI Semarang, Indonesia). We also have two speakers in the workshop session that are Dr. Rully Charitas Indra Prahmana (Universitas Ahmad Dahlan, Indonesia) and Dr. Muhtarom (Universitas PGRI Semarang).

On this seminar implementation, from one hundred and thirty-one full paper registers, there are sixty-nine presenters declared to be qualified. Our wish all the participants would enjoy the seminar, so they involve valuable and rewarding, and improve the knowledge and experiences.

Publishing Team
The Photographs of the 5th Seminar Nasional Matematika dan Pendidikan Matematika (SENATIK) 2020
Authors: Happy N , Rahmawati N H , Muhtarom M , Wulandari D , Pramasdyahsari A S , Nursyahidah F , Albab I U , Murtianto Y H , Aini A N , Sutrisno S
Published: October 2020

List of Keynote Speaker, Workshop Session, Conference Photoghraphs, Design freedom learning in mathematics, Enhanching student engagement in learning mathematics: The case of economics and business students in Universitas Gadjah Mada, Implementation freedom learning into mathematics learning based on mobile with a seamless learning approach are available in this pdf.
Mathematical representation on fraction operation for seventh-grade students using collaborative learning
Authors: Saskiyah S A , Putri R I I
Published: October 2020

This research determined the students’ mathematical representations ability after learning used the Indonesian version of Realistic Mathematics Education (PMRI) trough Lesson Study for Learning Community (LSLC) on fractional operation. The subjects were seventh-grade students in SMP Negeri 18 Palembang. We used a descriptive method, which explains the stage of the research in detail. The data were collected through observation, written tests, and interviews. We used PMRI for material content and research context, and LSLC for the implementation of the learning process. We obtained that the students’ mathematical representations ability in answering fractional operation problems has reached the indicators. The research showed that students’ mathematical representation abilities have arisen, including solving problems involving mathematical expressions and load the problems situation based on data or representations given. The indicator that rarely appears is to draw geometric figures to clarify the problem and facilitate resolution. Giving real context through PMRI and collaborative learning process was to help students in bringing up mathematical indicators of representation.
Exploring reversible thinking of preservice mathematics teacher students through problem-solving task in algebra
Authors: Maf’ulah S , Juniati D
Published: October 2020

Thinking reversible supports mathematic reasoning and flexibility of thinking. It affects the success of students in solving mathematical problems. Eventually, mathematic problem solving is the core of mathematic learning. Therefore, the teacher must have thinking reversible skills to develop students’ thinking reversible optimally. This study aims to explore the reversible thinking of preservice mathematics teacher students. The design of this research is qualitative and incorporating the test method. The test is in the form of algebra solving problem which contains an algebra equation. Students are assigned to create a new equation, which is equivalent to the equation in the test as many as possible to identify the aspect of students’ forwarding process. Then, students are assigned to reverse the new equation to the initial equation form. This is to identify the aspect of the reversing process. The forwarding process and reserving process is the core of reversible thinking. Therefore, the result of the student task is analyzed based on these characteristics. The result showed that there are four different strategies implemented by the students to create a new equation and reversing the new equation to the previous equation. It is elaborated in detail in the result of this article.
The effects of drugs in chemotherapy as optimal control of tumor growth dynamical model
Authors: Muhith A , Rahmalia D , Herlambang T
Published: October 2020

Cancer is the disease caused by disordered hormone so that it causes the lumps to grow abnormally on body tissue, and it is known as a malignant tumor. Some mortalities in the world are caused by cancer, while in Indonesia, cancer contributes to the third-largest death. This research will explain about stability and optimal control of tumor growth dynamical model by drugs in chemotherapy. In the tumor growth dynamical model, there are normal cells, tumor cells, and immune cells. From the mathematical model of tumor growth, some equilibrium points will be analyzed for their stability using eigenvalue. In this research, from the mathematical model of tumor growth, it will be added control, such as drugs in chemotherapy. The method used for solving optimal control problems and resulting numerical solutions is Forward Backward Sweep Method. Based on simulation results, drugs in chemotherapy give effects in a normal cell, tumor cell, and immune cell.
Ethnomathematics of fish catching exploration in Musi River
Authors: Malalina M , Putri R I I , Zulkardi Z , Hartono Y
Published: October 2020

The activities of the people catching fish at the bottom of the Musi River contain cultural elements which indirectly contain mathematical concepts. So far, fishing activity has only been seen from the economic aspect but not from the cultural concept associated with mathematics. So that the formulation of the problem in this research is to identify the ethnomathematic aspects of fishing activities in the Musi River. The method used in this research is descriptive qualitative. The data obtained were then analyzed by using ethnomathematic aspects according to Alan J. Bishop. Data collection was carried out by field studies, interviews and documentation. Sources of data in this research were 10 peoples who directly catch fish in the Musi River. The results of the research can be concluded that there are ethnomathematic aspects of fishing activity in the Musi River, namely determining the location, measuring, and designing. Thus ethnomathematics in the Musi River can be used in junior high school mathematics learning, namely in the material of cartesian coordinates, sets, social arithmetic, velocity, distance, and geometry.
Tutors’ opinions on students’ difficulties of learning mathematics in the distance higher education: A Delphi survey
Authors: Sugilar S
Published: October 2020

Learning in the distance in higher education was challenging since the students were supposed to study in a self-regulated learning mode. The difficulties were double in learning mathematics, especially for the students of the non-mathematics study program. The primary purpose of the research was to identify the students’ problems in learning mathematics at a higher education institution that implementing a distance education system. The method was a Delphi survey to 23 tutors for mathematics courses in the study program of a bachelor’s degree in elementary school teachers for identifying the student difficulties in learning mathematics. The research concluded that the problems of learning mathematics for the students in the distance higher education consisted in five components: 1) the nature of mathematics, 2) learning material, 3) the nature distance learning, 4) learning support services, and 5) motivation. The proposed recommendation was that to facilitate students’ learning mathematics, an institution of distance higher education should overcome the students’ difficulties in learning mathematics by preparing the learning materials and the student learning support services to accommodate the students.
Realistic mathematics education learning model to improve junior high students’ problem-solving ability in social arithmetics
Authors: Rakhmawati I A
Published: October 2020

This study was focused on how to improve junior high students’ problem-solving ability through the Realistic Mathematics Education (RME) learning model. Through problem-solving, students are required to make their own efforts to find solutions and built their own knowledge. One of the mathematical learning models that allow students to build their own knowledge is the RME learning model. RME learning model giving contextual problems that related to students’ real life and they will be motivated to learn and gained by their experience. This study is quantitative research with the experimental method. The data of this study were collected using the test method. Before the instrument is used, the instrument of the test must fulfill as good item criteria to retrieve data on the study include the level of difficulty, discriminating power, and reliability. The data analysis technique used in this study was the t-test with a significance level of 5%. Before testing the hypothesis, the first step is to conduct a prerequisite test i.e. normality and homogeneity test. The results show that the students’ problem-solving abilities in social arithmetics taught using the RME learning model are better than the students’ problem-solving abilities who are taught using conventional learning models.
Mathematics teacher knowledge in higher-order thinking skill: curriculum, pedagogy, and assessment
Authors: Samo D D , Garak S S , Maifa T S
Published: October 2020

This study aims to investigate mathematics teachers’ knowledge of higher-order thinking skills as an evaluation for improvement, enhancement, and development. This research is quantitative research with a survey method involving 132 mathematics teachers in East Nusa Tenggara. They have completed the Professional Teacher Education at the University of Nusa Cendana in 2019. The instruments used are a curriculum knowledge questionnaire, pedagogy, and assessment consisting of 98 statements (36 curriculum knowledge, 28 pedagogical knowledge, and 24 assessment knowledge). The data analysis stage is categorizing the level of mathematics teacher knowledge using Likert’s Summated Rating, then analysis of correlation, regression, and Manova. Mathematics teacher’s knowledge in higher-order thinking skills is at a high level of 34.1% (45 teachers) and a medium level with a value of 65.9% (87 teachers). The correlation value between the teacher’s background and knowledge of higher-order thinking skills is in the low category with a very small coefficient of determination. Teaching level and gender show a significant influence on knowledge of higher-order thinking skills. Gender, age, and level of teaching have a significant effect partially on teacher knowledge; it also affects knowledge of higher-order thinking skills. However, the teaching level aspect did not significantly influence pedagogical knowledge.
The improved model of incentive-pricing of internet schemes for Cobb-Douglas utility function by using LINGO 13.0
Authors: Puspita F M , Yuliza E , Rezky B J , Simarmata A N Y , Hartono Y
Published: October 2020

In this paper, an improved model of the incentive-pricing scheme was designed. Previous research only shows the incentive model with the disadvantages of no considering the utility function to measure the satisfaction of the user. Then, the models are improved by deriving from the incorporation of bundling and reverse charging models obtained from previous studies, as well as taking into account the quality of service to users by using the Cobb-Douglas utility function. Optimal pricing schemes applied to the local data server, which is mail traffic data. The model used is the nonlinear optimization problem and solved by LINGO 13.0 to get the optimal solution. The results show that optimal results in the form of pricing schemes by applying flat fee, usage-based, and two-part tariff for homogeneous consumer’s schemes and the improved models show better performance in achieving the profit than the previous incentive pricing models.
Solving capacitated vehicle routing problem using of Clarke and Wright algorithm and LINGO in LPG distribution
Authors: Yuliza E , Puspita F M , Yahdin S , Emiliya R
Published: October 2020

Capacitated vehicle routing problem is a vehicle routing problem that has constraints in the form of vehicle capacity. It is a matter of optimization to find the optimal route for some vehicles with a specific capacity and homogeneous vehicles that serve some agents with several known requests before the distribution process takes place. LPG distribution is the application of capacitated vehicle routing problems. This research aims to determine the LPG distribution route based on the Clarke and Wright Algorithm and LINGO. The capacitated vehicle routing problem model will be solved in two phases. The first stage completes the capacitated vehicle routing problem model using the Clarke and Wright algorithm. The second stage is completing the results of the first stage in the form of LINGO-based sub tours to obtain the optimal solution. The solution of the capacitated vehicle routing problem in distribution LPG using the Clarke and Wright algorithm has a total distance of 151.94 km. The solution of the capacitated vehicle routing problem in distribution LPG using LINGO has a total distance of 161.59 km.
The robust counterpart open capacitated vehicle routing problem with time windows
Authors: Yuliza E , Puspita F M , Supadi S S , Octarina S
Published: October 2020

The problem of transporting waste vehicle routes is one of the problems faced in big cities. Delay becomes a problem in the process of transporting waste. The route of garbage vehicles motivated this research. Thus, the optimization of vehicle routes is needed to minimize the distance and travel time. We investigated two robust optimization models, which are limited by vehicle capacity and time windows. Robust counterpart open capacitated vehicle routing problems with soft time windows is the first model. This model results in the arrival time of the vehicle on each TDS and FDS that may exceed the working hours. The second model is robust counterpart open capacitated vehicle routing problems with hard time windows. This model results in the arrival time of the vehicle on each TDS and FDS not to exceed the working hours. The two robust optimization models are solved using the exact approach and the heuristic approach. Complete the exact approach using the branch and bound method with LINGO software. Completion of the heuristic approach uses the Nearest Neighbour method. The two models that are solved by the branch and bound method and the Nearest Neighbour algorithm produce the optimal solution, obtained different sub tours.
Exploration of students mathematical connections with negative attitudes in solving a contextual geometry problem
Authors: Pambudi D S
Published: October 2020

A mathematical connection is an essential aspect of the mathematics learning process. Students vary in mathematical connection ability, some are strong connection ability, and others are weak. This research aimed to explore the ability of the mathematical connection of Junior High School students with negative attitudes towards mathematics in solving the contextual problem. Research subjects were two eighth grade students in Jember. Subjects selected by giving attitudes questionnaire and based on the questionnaire scores. There were two subjects chosen with the lowest scores of category in negative attitudes towards mathematics. Data were collected through interviews based on tasking problem solving (TPS). The contextual problem given in the TPS contains the concepts of geometry and social arithmetics. Data were analyzed qualitatively using the categorization, reduction, presentation, interpretation, and conclusion. The results showed that the research subjects made connections using facts, concepts/principles, procedures, and representations. But unfortunately, these mathematical ideas are not sufficient, and some of them are not connected properly, so students fail to solve the problem. From these results, it can be concluded that mathematical connections of junior high school students with negative attitudes towards mathematics include in the weak connections category.
The mathematics anxiety: Do prospective math teachers also experience it?
Authors: Juniati D , Budayasa I K
Published: October 2020

Many events illustrate how students who have high mathematical abilities but become unable to solve a mathematical problem due to high mathematics anxiety. So, what about prospective math teachers who work and study mathematics every day, whether they also experience mathematics anxiety? We described the mathematics anxiety of prospective math teachers, examined the effect on mathematics performance, and investigated the differences between mathematics anxiety levels based on gender, year of study, and reasons for choosing a college in mathematics education. The subjects were 148 prospective math teachers. We used the correlation test and alpha Cronbach to test the instrument’s reliability and validity, the regression test to see the effect of mathematics anxiety on mathematics performance, and the t-test and MANOVA to analyze the differences level of mathematics anxiety type for each group. We obtained that the mathematics anxiety level of prospective math teachers was relatively high and had a significant adverse effect on mathematics performance. The mathematics anxiety level of male and female students was the same. The level of mathematics anxiety of first-year, second-year, and third-year students was also the same. The reasons of students chose the study programs did not provide different levels of mathematics anxiety.
Comparison of backpropagation artificial neural network and SARIMA in predicting the number of railway passengers
Authors: Amalia O A , Putri A H M
Published: October 2020

Trains are one of the most popular public transportations in Indonesia. The data from the Indonesian Central Bureau of Statistics show an increasing trend in the number of train passengers in Indonesia. However, the improvement of the railway network and service is needed. This study aims to forecast the number of railway passengers in Indonesia to help the government make appropriate improvements in the railway system for the future and evaluate the potential loss due to COVID-19. We use the data from the Indonesian Central Bureau of Statistics, from January 2006 to February 2020 and assume that there is no pandemic of COVID-19. The two models we use are Backpropagation Artificial Neural Network (BPANN) and Seasonal ARIMA (SARIMA). To find the best model, we observe BPANN with various parameters and the potential SARIMA models in MATLAB and R software, respectively. Our finding is that Backpropagation Artificial Neural Network of 12-5-1 with a learning rate of 0.001 has a smaller root mean squared error (RMSE) compared to SARIMA (2,1,0)(0,1,2)12. Hence, it yields a more accurate forecast of the number of train passengers, which helps the railway company to improve and understand the loss due to COVID-19 accurately.
Analysis of mathematics learning outcomes on senior high school students in Madiun City, Indonesia in COVID-19 pandemic
Authors: Ariyanti G , Santoso F G I
Published: October 2020

In the COVID-19 pandemic, the learning process is carried out from home. This research aims to determine: 1) the effect of online learning on student mathematics learning outcomes, and 2) student responses in learning mathematics through online learning. This research is descriptive quantitative research. This research was conducted in the even semester of the academic year 2019/2020. The number of the sample in this research were 96 students of class XI from two senior high schools in Madiun City, Indonesia. Data collection techniques using the method of documentation and questionnaires. There are two sources of data, namely mathematics learning outcome data and student response data. The instrument used in this method is an online questionnaire in the form of student responses. The data of student mathematics learning outcome is used to determine the effect of online learning during the COVID-19 pandemic, while student response questionnaires are used to determine student responses to the online mathematics learning process. The results are 1) The average of Mathematics Learning Outcomes of class XI students before online learning is greater than the average after online learning, and 2) Based on the effect of online learning, more students do not like mathematics.
Analysis of the role of metacognition based on process complex problem solving against mathematical understanding of statistics in the era pandemic COVID-19
Authors: Rusmini R , Harahap F S W , Guntoro F R
Published: October 2020

This research aims to analyze the role of process complex problem solving based metacognition against mathematical understanding in the era pandemic Covid-19 at the Universitas Potensi Utama Medan. This research uses qualitative descriptive methods. The population of the study is information system students in the second semester of Universitas Potensi Utama Medan. The research subjects were Information Systems students in the 2nd semester of SI C morning and SI B morning classes. To obtain research data, an instrument was used in the form of 2 contextual problems with metacognition questions in problem-solving and student questionnaire response sheets with 30 queries. Conclusions of the results of the study: 1) The role of metacognition increases with motivation in learning, namely process complex problem solving, 2) the level of mathematical understanding of students in solving mathematical problems of statistics increases significantly, 3) students’ responses in learning mathematics show positive reactions, 4) Students in tryout I mostly experienced many obstacles but in tryout II students were already accustomed and learning outcomes improved significantly, 5) Student answer sheets are more varied and better. With online learning, students are trained in their metacognition roles independently.
Interactive media-based video animation and student learning motivation in mathematics
Authors: Rachmavita F P
Published: October 2020

Mathematics is an essential subject in school and is used in everyday life. In learning, of course, it takes motivation to learn. Motivation in learning is very necessary for students. This is certainly to support the success and objectives of learning, especially in learning mathematics. However, the level of student motivation in mathematics is still low. Therefore, it is necessary to have appropriate learning strategies to increase student motivation. One of them is by developing learning media. This article examines the theoretical framework of student motivation and learning media. The method used in this article is a literature review by collecting data from various published scientific journals and other relevant sources. The results of this article indicate that in order to increase student learning motivation, it is necessary to have learning media that can mark students’ interest in learning in mathematics. One of them is by developing interactive media that is attractive to students. Both in terms of appearance and content of the media. The development of interactive media-based video animation can increase student learning motivation in mathematics.
The effectivity of contextual teaching and learning (CTL) approach with Geoboard media on mathematics learning for four-grade elementary students
Authors: Trimurtini T , Safitri T R , Sari E F , Nugraheni N
Published: October 2020

Mathematics problems for elementary school are about the circumference and area of two-dimensional figures. Students only memorize the formula without understanding the meaning of the rim and area. The objective of this research is to examine the effectivity of the CTL approach with Geoboard on mathematics learning. The research population was 126 four graders of public elementary schools in Tamansari Kebumen School Group. One experimental class and one control class were selected. Both of the studies were given a pre and post-test. The data consisted of learning outcomes that were analyzed using a z-test and t-test, as well as student activities that were analyzed using descriptive statistics. The research results showed that: 1) the mastery learning of the experimental class reached 75%; 2) the experimental class average of learning outcome was higher than the control class; 3) the increase of learning outcomes were classified as ‘medium’; and 4) the student activities in solving problems enhanced from 88.34% to 96.66%. The research concluded that the CTL approach with geoboard media is sufficient to be applied in mathematics learning for the four-grade students of public elementary schools in Tamansari Kebumen School Group.
Mathematical problem-solving ability using flipping classroom with relating, experiencing, applying, cooperating, and transferring learning strategy
Authors: Fauziah R
Published: October 2020

Problem-solving is one of the abilities that elementary school students must possess. Students’ mathematical problem-solving skills are still low will affect the ability to solve everyday problems. This study examines the theoretical framework of the flipped classroom learning model with the REACT strategy to improve mathematical problem-solving in elementary school students. The method used in this research is a literature study. Data is collected from articles published in various scientific journals and other related sources. The results showed that to improve students’ mathematical problem solving can be done through the teaching of mathematics learning for students. The flipped classroom learning model with the REACT strategy is an innovation that uses a learning approach by utilizing technological developments with the concept of learning carried out in pre-class, in-class, and after-class so that learning is student-centered, more flexible, collaborative, active, and meaningful.
Enhancing learning outcome in integral through Online teaching based during COVID-19 pandemic
Authors: Kasyadi S , Lapasau M , Virgana V
Published: October 2020

This research aims at enhancing learning developments in Mathematics through online learning systems using multiple cycles. We conducted a classroom action research as a method with the jigsaw type within the cooperative learning model. The research samples were 36 students in the fourth semester. The finding showed that there was a considerable increase in the learning outcomes from the first cycle to the second cycle. In the third cycle, all students reached the minimum submission criteria prescribed by the faculty with a value of 70. It can be concluded that the cooperative learning model of Jigsaw type with an additional assignment of homework can maximize the results of mathematics learning in Indonesian universities.
Design of Kahoot-based visual presentation media for exponent material with CAI models
Authors: Rahmawati N D , Buchori A , Harun L
Published: October 2020

The use of instructional media in senior high schools is currently not optimal. It causes students difficulty in understanding the concepts conveyed by the teacher so that students are less able to solve problem problems. Thus, it is hoped that through visual presentation Kahoot media with the Computer Assisted Instruction (CAI) model, students can more easily understand mathematical concepts. The purpose of this study is to produce a Kahoot-based visual presentation media with CAI models that meet valid criteria in learning mathematics in senior high school. The research method uses the ADDIE model (Analysis, Design, Development, Implementation, and Evaluation). The research subjects were students of class X SMA UPGRIS Lab School. The sampling technique uses cluster sampling. The results of this study are visual Kahoot media presentation with the CAI model suitable to be used as a medium for learning mathematics in senior high school.
The greedy randomized adaptive search procedure method in formulating set covering model on cutting stock problem
Authors: Octarina S , Puspita F M , Supadi S S
Published: October 2020

This study aims to apply the Greedy Randomized Adaptive Search Procedure method in formulating the Set Covering model. Selected cutting patterns in the Cutting Stock Problem are generated by the Greedy Randomized Adaptive Search Procedure method and then formulating them to the Set Covering model. This study used a single stock with four types of items. The Greedy Randomized Adaptive Search Procedure method can show the maximum number of cutting patterns with minimum trim loss. Based on data analysis, it can be concluded that the Greedy Randomized Adaptive Search Procedure method will give different patterns depends on the number of the upper limits of demand. The Set Covering model, which was solved by LINGO 13.0, showed the optimal cutting patterns with minimum trim loss, but still has the lack of the product in one of the items.
Android-based tutorial: Improving students digital literacy in mathematics programming
Authors: Setyansah R K , Suprapto E
Published: October 2020

The purpose of this research is the development of making media tutorials based on Android mathematical applications (Wolfram Alpha, Geogebra, and Matlab). This tutorial media is stored online and displayed through Google Site pages. The development used the Plomp model that has four-phases, namely the initial investigation, the design, the realization/construction, the testing, evaluation, and revision. Before making a media tutorial, the media tutorial was validated by two material experts. This prototype was tried for students in a limited way to see the practicality of using media and to be an evaluation for researchers. The conclusion from the media tutorial is considered feasible if it meets 1) the element of validity with the average results obtained from the material validation sheet 88.5% and 83.5% media experts; 2) it seems that the effectiveness of complete material from limited tests is 88.17% and field tests are 82.81%; and 3) the results of the questionnaire responses were seen from students after using the tutorial media on a limited test showed 79.33%, and in the field, the test showed 78.23%, the achievement of reinforcement using digital literacy. The acquisition in this study, sharpening digital literacy using tutorial media, is 71.11% categorized.
Development of mathematics manipulative for slow learner and dyscalculia student in elementary school by using Montessori’s characteristic
Authors: Aprinastuti C , Anggadewi B E T , Suharno R , Wiyantari W
Published: October 2020

Mathematics has an abstract object of study. That’s why many students have difficulty understanding Mathematics, especially for slow learners or dyscalculia. This research was conducted based on the needs analysis results at SD N Mertelu and SD Muhammadiyah Sagan Yogyakarta. This study aims to develop and determine the quality of mathematics teaching aids for slow learners and dyscalculia using Montessori media principles. This research method is research and development with research subjects, namely 4 grade III students with the characteristics of slow learner or dyscalculia. The instruments used in this study were questionnaires, interview guides, and observation guidelines. The results showed that mathematics teaching aids have the characteristics of Montessori manipulative, namely attractive, gradation, auto-education, auto-correction, contextual, and have a “very good” quality and suitable for use.
Designing online class learning of sine rule using ramadhan tradition context
Authors: Aisyah F , Nursyahidah F , Kusumaningsih W
Published: October 2020

This research aims to create a learning trajectory by using Ramadhan tradition in Pemalang as a context to assisting students in recognizing the concept of sine rule. The approach used in this research was Realistic Mathematics Education. The subject of the study is the tenth-grade students of SMA N 1 Belik, Pemalang, Jawa Tengah, with six student participants who have been chosen as heterogeneous students. The methodology used is design research consisting of three stages, namely preliminary design, design experiment, and retrospective analysis. Nonetheless, this analysis only shows the results of the design experiment stages, in particular, the pilot experiment. Data collection was carried out using a variety of methods, namely: video recordings, photos, student work results, and student interviews during online learning. Student learning activities comprise three activities: observing night market video to find facts about the triangle, observing Takbir keliling video to find the concept of the sine rule, and solving a contextual problem related to the sine rule. The results of this study show that a series of activities designed could help students understand the concept of sine rule by using skype as a media and Ramadhan tradition in Pemalang as a context.
Hawgent dynamic mathematics software to improve problem-solving ability in teaching triangles
Authors: Zhang L , Zhou Y , Wijaya T T
Published: October 2020

ICT is one of the mediums to improve the quality of education. ICT can make the teaching-learning process to be more interesting. Other than that, ICT is proved to be able to help students understanding the concept of a topic and improve the students’ mathematics ability. According to the difficulties faced by the students when learning triangles, researchers gave out questions to a random junior high school class and found out that the students’ understanding ability towards the basic concept of a triangle is still lacking. This research uses a combination of the ADDIE model and quasi-experiment to compares the class that uses Hawgent dynamic mathematics software with the class that uses the traditional teaching method. after observing the situation, researchers will then design an interactive learning media using Hawgent dynamic mathematics software that will help the student to understand the basic concept, improve their problem-solving ability. Research shows that interactive learning media such as hawgent can be used to teach triangles. The implementation result also shows that the students’ problem-solving ability that uses interactive learning media is better than that does not use the interactive learning media.
Prognosis of yard area landscaping condition due to reconstruction by the example of Krasnoufimsk city
Authors: Atkina L , Bulatova L
Published: October 2020

Annotation. At the present time the federal program of improvement of yard areas in Sverdlovsk region is coming into effect. Therefore, a compound landscape analysis of project areas was held and the consequences of their reconstruction were assessed. The main attention was paid to the parameters which reflect the balance of the territory: the area of roads, driveways, sidewalks, children’s playgrounds, landscaping, including separately taken into account area under the lawn. Results of the research confirm that the reconstruction will reduce the area of green territories. Due to reconstruction, the share occupied by green areas, is reduced three times in two out of three of investigated yards. And only in one yard the reduction is not so significant – only by 15 %. The positive aspect implemented in all yards is a specific separation of the children’s playground. The project also includes complete removal of large trees and their replacement with a few shrubs. Eventually the research of yard area landscaping projects proves that tree-and-shrub’s planting is not prioritized and, unfortunately, due to reconstruction will be presented in a much more simplified version compared to the existing one, thus it will negatively affect the environmental situation of the city.
Investment Management Based On Key Investment Growth Spurts
Authors: Myakshin V , Petrov V , Pes’jakova T
Published: October 2020

Among key factors that are perceived as crucial to the investment development within an economic system is sectoral composition. It is essential to identify those types of economic activity that define the makeup of the investment-related links between associated sectors. Based on the sector approach to investment and demand, this article looks at how the investment self-induction mechanism influences intersectoral investment dynamics. Among the outcomes of our study we is a method for identifying, based on output-input account data, key investment growth spurts. The method we suggest has been applied to the analysis of the U.S. industries’ performance. The main hypothesis we explore builds on the idea that the investment growth spurts may shortly after they have been given ample impetus launch what we call a mechanism of self-induction of investment, while also spurring the investment development within adjacent sectors of economy. The presented theoretical assumptions are backed up with empirical outcomes. In our study we made use of the data released by the US Department of Commerce. The conclusions we arrived at enable identification of the industries which, if enhanced through self-induction of investment mechanism, may generate a desired increase in the investment flows within adjacent economic sectors.
Design of rehabilitative and developmental board games for people with impaired motor and cognitive functions
Authors: Chepurova O B , Putintseva T A , Tarasova O P , Tuysina D M
Published: October 2020

The article presents the results of the development of rehabilitative and developmental board games of varying complexity for people of all age groups with a violation of the musculoskeletal system and cognitive functions by the author team of the Orenburg State University design department. Games are designed to restore and develop motor skills, visual perception, cognitive abilities, logical and spatial thinking. Particular attention is paid to the variability of games and parameters of game chips configuration, with the aim of gradual and continuous improvement of patients’ skills in the rehabilitation process.
Urbanization processes in the daily life of rural residents
Authors: Bulygina T A , Tufanov E V , Yanush S V , Kravchenko I N , Ivashova V A
Published: October 2020

The article presents a vision of urbanization processes in the daily life of rural residents at the regional level. The methods of studying the processes of urbanization in the daily life of rural residents were: analysis of approaches to solving the problems of urbanization on the example of the Strategy for Socio-economic Development of the Stavropol Territory until 2035, taking into account a review of publications of scientists in scientometric databases; analysis of statistical data characterizing the vital activity of the urban and rural population of the Stavropol Territory; analysis of the results of a questionnaire survey of the population. The study found that a scientific discussion of various aspects of urbanization of rural residents confirms the relevance of the topic and shows approaches to solving problems of improving the quality, comfort and query of residents on the characteristics of the living environment. There is a certain lag in the comfort of the environment for the daily life of citizens living in rural areas compared to urban areas. This position is articulated at the level of understanding and the desire of residents to the best forms and models of environmental comfort. In the Strategy for Socio-economic Development of the Stavropol Territory in the period up to 2035 and other program documents for the development of the region, it is given much attention to the topic of complex transformations of rural settlements, both at the level of target indicators and in the concretization of measures to achieve them. The positive dynamics of the processes of urbanization in the life of rural residents is monitored in terms of satisfaction with the comfort of living in settlements and target indicators of strategic documents of the territories and the region as a whole.
Arctic design methods: Developing technology for onboarding life in the extreme environment
Authors: Kravchuk S G , Garin N P , Klyusov N V
Published: October 2020

The paper reports the results of a 3-yr long research project (2017-2020) into Arctic design and its potential to contribute to the development of the Russian Far North, with emphasis on mobility in conditions of underdeveloped infrastructure and remoteness from economic centres. By way of employing the case study approach, we conducted several expeditions to explore DIY transport vehicles created by inhabitants of the Russian hinterland. We elaborate on the results of data collection and analysis to propose a triad of design methods aimed at working with local makers. The overall approach is illustrated with conceptual sketching. In the final discussion of the results, we outline potential directions for further research.
Cycling development in Moscow as part of the policy of sustainable development of the metropolis
Authors: Nemov P P , Novik A I
Published: October 2020

Bicycle transport is a popular and promising means of transport in the largest cities, as well as the least developed in terms of business travel purposes. The paper substantiates the importance of developing bicycle transport infrastructure in the largest cities through the example of Moscow. The development of bicycle transport is inextricably associated with sustainable urban development and meets the goals of the VizionZero program, leads to the decrease in the use of individual motor transport, increases the physical activity of the population and also has a positive effect on the development of urban environment. The paper highlights the main purposes of the cycling movement of the population and emphasizes the importance of the development of business movement. The characteristics of the development of bicycle-transport network are given. The importance of the integrated approach in the development of a city is substantiated, including the development of a bicycle-transport network with provision of connectivity and safety during its construction. The problems of the development of cycling in Moscow are determined on the example of foreign and Russian cities, as well as strategies for the development of transport infrastructure. The value characterizing the quality of the network development in the city is determined presented by the length of cycle road network per 1 inhabitant. The main problems of the development of cycling transport in the city of Moscow are found and the prospects for the development of the bicycle transport network in Moscow are outlined through the example of the work of Moscow Transport Department and Moscow General Planning Research and Project Institute. The time spent on cycling along the selected routes is analyzed in comparison with car driving during rush hours in road network. As a result it is found that the time spent on cycling is lower compared to traveling by car. In addition, the possibility of developing a bicycle transport network in the red lines of Moscow road network is found. The authors put emphasis on the relevant character of the problem of social perception of cycling transport among the population and determine the directions for increasing the social approval of this type of transport.
Experience of reorganization of depressed industrial areas
Authors: Perkova M V , Yu Drebezgova M
Published: October 2020

Historic industrial sites and their territories present the integral part of urban environment. Depressive industrial territories in cities need reorganization and transformation, since they do not correspond to the modern requirements for the development of territory and destroy the image of cities. The paper studies the prerequisites and problems of the reorganization of industrial territories, as well as the examples of successful reorganization of industrial facilities depending on their location in urban structure: in the historical center of the city, in industrial zones in city outskirts, reorganization of quarries and dumps distantly located from city structures. Three types of reorganization of depressed industrial territories were identified, depending on the degree of preservation of industrial functions: reorganization with preservation of industrial functions, partial re-functionalization and complete re-functionalization. The applicability of the ways to reorganize various industrial sites against the identified types of depressed industrial areas is evaluated.