Indonesia Conference Directory

Corresponding Author
Drajat Friansah

Institutions
STKIP PGRI Lubuklinggau

Abstract
Ethnomatematics as the crossing between culture, historical traditions, socio-culture and mathematics. As a part of an entity from Negara Kesatuan Republik Indonesia which has a diversity of cultures, its influenced by various civilizations that seen from the cultural heritage. The aimed of this research to identify ethnomatematics which found in cultural heritage in Musi Rawas regency through ethnographic studies. Data collection techniques used observation, field notes, interviews and document checks. Based on the search from cultural heritage that spread across 6 sub-regency include Rumah Bari, Makam Keramat, Raudhatus Sa-adah Mosquew. The most mathematics concept in the three cultural reserves were geometric shapes in the form of space, motif and carvings.

Keywords
Ethnomatematics, Cultural Heritage, Musi Rawas

Topic
Mathematics Education

Link: https://ifory.id/abstract/87uVnwgkvM6a

Corresponding Author
Verdiano Frandhiyawan

Institutions
Electrical Engineering Study Program, University Hang Tuah

Abstract
Abstract. The need for the fulfillment of electrical power that is often used daily is the necessity of security protection more current interference on the power system using the Mini Circuit Braker. In resolving the problems used the standard Inverse curves, Very Inverse and Extremely Inverse to determine the speed of relays by setting the current in the design equipment build Over Current Relay. In this research, the creation and testing of the entire hardware designed to build more current relay-based monitoring of the Internet of Things (IoT) and Arduino as 1-phase electronic protection. Tests on this study used Arduino IDE software that assists the function and operation of other components, replacing the performance of a factory-made Mini Circuit Braker system. Test current is made of 1 Ampere to 4 Ampere with Time Multiplier Setting (TMS) 0.09 on standard Inverse, Very Inverse and Extremely Inverse. In Inverse Standart, real test current interference of 1 Ampere with relay trip operating time is 542 millisecond, Very inverse rele trip 563 millisecond and 804 millisecond for Extremely inverse. In the current disruption of 4 Ampere relay trip of 257 millisecond for standard Inverse, Very Inverse of 122 millisecond and 060 millisecond for Extremely Inverse. In the results of the test and data can be concluded the performance of more current willing operation has worked according to the characteristic curve of Inverse IEC 60255. So that all the used electronic equipment can be anticipated more well enough to avoid damage.

Keywords
Kata Kunci : Over current relay karakteristik inverse, internet of things, Acs712, Zmpt101b.

Topic
Energy Storage

Link: https://ifory.id/abstract/GZzEgTRcvB8L

Corresponding Author
Rossanto Dwi Handoyo

Institutions
Department of Economics, FEB UNAIR

Abstract
This study aims to relate between trade and non tariff barriers, in particular issue of food protection. We analyze the impact of Non tariff measures using sanitary and phytosanitary policy (SPS) and technical trade barriers (TBTs) on Indonesia fishery exports and its trading partner countries such as China, South Korea, Vietnam, Canada, Russia and the European Union in period of 2007 to 2016. SPS and TBT are measured using inventory approach in the form of coverage ratio. In addition, this study uses a gravity model and panel data regression method. The results of this study indicate that the variables GDP of exporting country and GDP of importing country have a positive and significant effect on Indonesian fishery exports. Distance and SPS have a negative and significant effect on Indonesian fishery exports, while TBT has no effect on Indonesian fishery exports.

Keywords
Export, Food Security, sanitary and phytosanitary policy , Technical Barriers to Trade, Fishery Export, coverage ratio

Topic
Maritime Economics

Link: https://ifory.id/abstract/2nj4MQA3bzaE

Corresponding Author
Era Widia Sary

Institutions
Universitas Muhammadiyah Banjarmasin

Abstract
Suction is a procedure of action in health services that affect the safety of the clients because suction aims to assist clients to fulfill the oxygen needs by helping to liberate the airway. This study aims to gain an overview of the nurses experience of determining how to perform suction actions on clients with mechanical ventilators in the Intensive Care Unit (ICU). The method used in this research is qualitative method with phenomenology design. The data were collected by in-depth interviews on six participants who worked as nurses in the Intensive Care Unit (ICU) room. There are seven themes identified in this study: (1) the understanding of suction (2) the experience of suction (3) the suction complication (4) the pathophysiology of ventilator installation (5) the importance of adequate resource support (6) the nurse constraint in the suction implementation (7) the protection against nosocomial infections potential. From the results of this study, it is expected that the hospital can improve the support of nurses on their self-development and facilities in carrying out actions in accordance with the standards, in order to continue to gain skills and can update the latest health sciences to support the procedures performed in the Intensive Care Unit (ICU).

Keywords
Nurse Experience, Suction Action, Client Safety

Topic
Healthcare Practice and Services

Link: https://ifory.id/abstract/hNDXba3Tv9mU

Corresponding Author
NORHAZLIN ISMAIL

Institutions
Faculty of Management, Multimedia University

Abstract
Cyber-entrepreneurial interest is a term used to describe the readiness and willingness to become an internet-based self-entrepreneur. With an increase in the number of unemployed in Malaysia which accounted for 521.3 thousand persons in March 2019, choosing cyber-entrepreneur as a career is one option available to the Malaysian especially the graduates as a report mentioned that this is the group that contributes to the highest number of unemployed. Hence, this study aims to explore the cyber-entrepreneurial intentions of the Malaysian University students. Specifically, this study applies the Entrepreneurial Attitude Orientation (EAO) scale to measure the students- entrepreneurial attitude. The EAO attitude subscales are achievement in business, innovation in business, perceived personal control of business outcomes and perceived self-esteem in business. A survey approach was adopted by sending questionnaires to 2000 public and private universities- students in Malaysia. The results show that personal control and self-esteem have significant and positive relationships with cyber-entrepreneurship intention. Achievement and innovation, on the other hand, were not significant. These findings provide important insight to relevant parties to embed more cyber-entrepreneurial curriculum or workshop to educate and guide the universities students.

Keywords
cyber-entrepreneurial, universities students, EAO

Topic
Entrepreneurship

Link: https://ifory.id/abstract/nEeMQFP6NgT4

Corresponding Author
Miruthula Segaran

Institutions
a)Faculty of Creative Multimedia, Multimedia University
Persiaran Multimedia, 63100 Cyberjaya, Selangor, Malaysia
*miruthula0212[at]gmail.com*

b)Faculty of Creative Multimedia, Multimedia University
Persiaran Multimedia, 63100 Cyberjaya, Selangor, Malaysia
*vimala.perumal[at]mmu.edu.my*

c)Faculty of Creative Multimedia, Multimedia University
Persiaran Multimedia, 63100 Cyberjaya, Selangor, Malaysia
*cowong[at]mmu.edu.my*

Abstract
The mass and social media depict rising crime rates, especially violent crime and subsequently illustrates an uncivil, dangerous and unsafe environment. While local media and social commentary frequently argue that film violence causes violent or aggressive behaviour especially among Malaysian youths, only a handful scholars contend that media may influence crime, but only as a source of information about techniques and styles, not as a motivation for crime. This debate has critical implications for criminal justice academics as calls for policy are regularly made on the basis of research in this area. This research contributes to the literature by presenting detailed empirical evidence of how the role of films contribute in prompting violence among youths and how their media consumption pattern alters their behavioural and personality development. With an empirical model that addresses possible bidirectionalities between violence and the rise of crime rates among youths. In this case, violent crimes in Malaysia occurs in a fluctuating pattern. The highest number of violent crimes are recorded in the year 2009 (42,365 cases) followed by the year 2008 and urban areas such as Selangor and Kuala Lumpur are the most prevalent areas for high crime rate. Although the government has taken several initiatives to curb this issue, it is less likely effective and fades over time. Hence, the target group for this study is mainly youth who are 15-25 years of age and resides around the Klang Valley vicinity. Therefore, this study aims to contribute and improve the social wellbeing of the future generation and society in terms of psychology and behaviour for the betterment of the nation as well as promotes a healthy media consumption attitude among youth.

Keywords
Media Violence, Crime Rate, Youth, Behaviour, Psychology

Topic
Digital Social Innovation

Link: https://ifory.id/abstract/zMpJ4CXhnREd

Corresponding Author
Zarehan Selamat

Institutions
Multimedia University
PersiaranMultimedia
63100 Cyberjaya
Selangor
Malaysia

Abstract
In recent years, there has been a rising interest in the issue concerning the financial literacy of the young societies from the academic community, financial institutions, organization, consumers, government agencies, and policy makers. This is because financial matters are an important part of everyday life for individuals and an ability to manage the financial is essential to being successful in life. In this context, the purposes of present study is to investigate the level of financial literacy of young generation in Malaysia. Specifically, it will examine the relationship between financial literacy and financial behavior. Major findings show that, financial literacy has a positive impact on financial behavior amongst individuals. Financially literate people would have better understanding, skill and are more capable of organising their financial affairs. Indeed, many factors were actually influenced the level of financial literacy among individual. To the best of our knowledge, there are not many known research investigating the relationship between financial behaviors of college students in the context of a developing country. Thus this study intends to contribute to the literature and fill the research gap related to financial literacy in the context of the Malaysian market.

Keywords
Financial literacy, behaviour, financialattitude, young generation, Malaysia

Topic
Strategic Management & Ecosystem Business

Link: https://ifory.id/abstract/FhWMZH2YCD7a

Corresponding Author
Syamini Segaran

Institutions
Multimedia University, Malaysia

Abstract
Introduction The telecommunications industry have contributed positively to the Malaysian economy, as reported by the Department of Statistics of Malaysia. The expansion of the industry is vital to ensure prosperity of areas i.e. Internet of Things and Digital Financial Services. Despite the growing number of licensees, the cancellation rate of the Individual licences have been rising from 2007 till 2017. Financial difficulties appear to be the source of these firms- licence cancellation. Malaysia may not be able to achieve its 2020 national agenda to become full national digital economy if the problem continues to exist. Aim of the study The aim of the research is to investigate the performance of the NFP and NSP Individual licensees- financial status to assess the extent of the financial performance-s influence on the cancellation, non – renewal and surrender statuses of these licences. Method Our sample consists of the financial information of the six major operators in the industry and 2 operators who have exited the industry. Profitability, liquidity and the solvency ratios were computed for 5 years. Regression analysis was employed to test the impact of financial performance for selected licensees. Results Results obtained shows that there is no relationship between the financial performances (profitability ratios) with the liquidity ratios although a strong relationship is observed between the financial performance and the solvency ratios. The research found that the financial performance of the firms impacts the cancellation, surrender and non-renewal of the firms- licences. The firms also contributes significantly to the GDP of this particular industry. Conclusion The overall GDP of the country is influenced by the decrease of percentage share by the telecommunications industry contributed by the exit of the firms- holding the NFP and NSP Individual licences. Results of this study have significant implications for the Malaysian government to achieve the proliferation of Internet of Things for the Sustainable Smart City initiative.

Keywords
Malaysian telecommunications industry, financial ratios, financial performance, network facilities provider, network service provider, regression, GDP

Topic
Strategic Management & Ecosystem Business

Link: https://ifory.id/abstract/TnQKhYj9UXGN

Corresponding Author
Mediany Kriseka Putri

Institutions
Telkom University

Abstract
The Social Rehabilitation Organization For People With Disability Sensory Blind (BRSPDSN) is a rehabilitation and social protection center for people with disabilities - in this case blind people-under the auspices of the Director General of Social Rehabilitation of the Indonesian Ministry of Social Affairs. In this institution there are some clients who want to become entrepreneurs but it is very difficult for them to compete with normal people, due to our clients have not had entrepreneurial quality to build a business and motivation for entrepreneurship yet. The purpose of this study is to determine the impact of entrepreneurial characteristics on entrepreneurship motivation of the BRSPDSN Wyata Guna Bandung clients. This study uses causality method by quantitative approach and analyzed by multiple linear regression. The sampling technique in this study is non-probability-quota sampling with 100 clients as our respondents with minimum age (17 years and above). The software for data processing is using SPSS software. The results out that only self-esteem and resukt orientation influences entrepreneurship motivation partially, while simultaneously all independent variables influence entrepreneurship motivation. This research suggest improving of client-s self-esteem through increasing meeting intensity in order to checking business plan result previously and future visions.

Keywords
Entrepreneurial Traits, Motivation for Entrepreneurship, Multiple Linear Regression Test

Topic
Entrepreneurship

Link: https://ifory.id/abstract/rtafU98LdW6B

Corresponding Author
CHOY YOKE CHONG

Institutions
Faculty of Management, Multimedia University,
Persiaran Multimedia, 63100, Cyberjaya, Malaysia.

Abstract
Institutions are the fundamental determinant of economic growth. A good institutional quality ensures the efficiency of resources allocation on productive economic activities to improve economic performance of the country. Therefore, pertaining a high quality of institution among the Comprehensive and Progressive Agreement for Trans-Pacific Partnership (CPTPP) countries will be important to ensure continuing economic performance after the withdrawal of United States from the original TPP agreement. As a result, this study aims to investigate how institutional quality can improve the economic performance of member countries within CPTPP. An unbalanced panel data for 10 members of CPTPP (without Brunei) covering from year 2002 to 2015 were analyzed using the Least Square Dummy Variable (LSDV) model. An inversed-U shape of relationship was detected implying a nonlinear impact of institutional quality on the economic performance among CPTPP countries. The economic performance improved with better quality of institutions. However, a reverse relationship was found after the threshold level of institutional quality at the level of 0.638. This finding implying that countries with institutional quality of above 0.638 will hinder economic performance. Therefore, CPTPP countries can enjoy improvement in economic performance if their institutional quality to be kept below the threshold value.

Keywords
CTPPP, debt, economic performance, institutional quality, nonlinear

Topic
Strategic Management & Ecosystem Business

Link: https://ifory.id/abstract/LVCwxuPkMvh4

Corresponding Author
Intan Soraya Rosdi

Institutions
Faculty of Management, Multimedia University, Cyberjaya, Malaysia

Abstract
Continuous renewal of organizational knowledge is crucial for firms intending to produce innovative outputs. For SMEs, external sources of knowledge becomes especially important as their internal knowledge is relatively limited compared to that of large organizations. Based on a model of knowledge-driven innovation in SMEs, this study examines the perception and behavior of 221 employees in innovative Malaysian SMEs with regards to how their choices of using specific types of external knowledge sources subsequently influence the types of innovation produced by their firms. Results show that the employees use of either market-oriented or scientific-oriented knowledge sources determine the type of innovative outputs for their firms i.e. incremental or radical innovative outputs.The main contribution of this study is the emphasis on how employees knowledge acquisition behavior significantly impacts innovation at firm level.

Keywords
SMEs, knowledge management, knowledge sources, innovation, intellectual capital

Topic
Strategic Management & Ecosystem Business

Link: https://ifory.id/abstract/eMW8D7HPufJj

Corresponding Author
Ruzanna Ab Razak

Institutions
Faculty of Management, Multimedia University,
Persiaran Multimedia, 63100, Cyberjaya, Malaysia.

Abstract
Math anxiety is one of the psychological factors that affect students- math skills and achievement. Math-anxious individuals often stay away from or skip mathematics classes, take up fewer mathematics courses, and have lower confidence in the subject compared to their non-anxious peers. These behaviours are often displayed by business and manage-ment students at the university. With the increasing demand for STEM-skilled graduates, math anxiety in business and management students should be overcome so that they can become relevant in the future industry. This paper discusses how interactive e-learning can reduce students- math anxiety and develops their mathematical resilience for effective learning.

Keywords
e-learning, mathematics, anxiety, resilience

Topic
Digital and Innovative Education

Link: https://ifory.id/abstract/TR8CgafxZWeh

Corresponding Author
mian maria stephanie

Institutions
a) Departemen of Chemistry Education, FMIPA, University State of Jakarta
Jl. Rawamangun Muka, Jakarta Timur, 13220, Indonesia
*maria.paristiowati[at]unj.ac.id

Abstract
The use of renewable material with safe solvents to extract natural indicator of jambolan fruit peels as a substitute for synthetic indicators has been carried out. The results of measuring the absorbance value at wavelength 507-528 showed that the jambolan fruit peels was extracted optimally in the solvent mixture double distilled water:ethanol with a ratio of 1:2 at pH 2. The results of maceration then extracted in two different solvents (n-hexane and chloroform). Testing extract using various pH solutions showed indicator of jambolan fruit peels showing discoloration red at pH 1-2, fades from pH 3-7, purple at pH 8, green pH 9-11 and yellow at pH 12-14. Testing with the titration method shows that the volume of the titration endpoint using natural indicator is not much different from the PP and MM indicator. The data generated in this study indicates that extract of jambolan fruit peels can be used as a substitute for synthetic indicators as the implementation of ESD concept at school.

Keywords
Jambolan fruit, acid-base indicator, education for sustainable development

Topic
Chemistry Education

Link: https://ifory.id/abstract/eVR6m3kXuTUK

Corresponding Author
Purwo Susongko

Institutions
University of Pancasakti Tegal, Indonesia
American College Testing, USA
University of Pancasakti Tegal, Indonesia
University of Pancasakti Tegal, Indonesia

Abstract
The objectives of this study are: (1) To compile a test construction to measure scientific literacy skills of integrated science-based high school MIPA program students by referring to the achievements of scientific literacy according to the 2015 PISA standard, (2) Conduct validation of test items using Rasch modeling. The research design uses ADDIE procedural models (Analysis, Design, Development, Implementation, Evaluation). There are three types of validation in the development of instruments namely content validation, psychometric aspects validation and extract validation with Rasch modeling. The instruments were tested on class XII students of the MIPA Program from Tegal City 2 High School and Tegal City 3 High School involving 112 students. The construction of the test consisted of 17 integrated science cases presented in the form of testlets each consisting of three questions referring to scientific literacy competencies according PISA standard 2015. Test items have fulfilled the validity of the content aspects and psychometric aspects. Extract validation using Rasch modeling gives the following results: (1) The level of item difficulty is in the range of -3 to 3, (2) There are 16 items that are compatible with modeling, (3) There are 97.32% of student responses suitable with modeling, (4) There are 2 items containing DIF. Based on consideration of all aspects of validity, there are 14 items worthy of being used as items for scientific literacy tests.

Keywords
Instruments, scientific literacy, integrated science, Rasch model

Topic
SCIENCE EDUCATION

Link: https://ifory.id/abstract/QDm6z8J24wpE

Corresponding Author
Ria Rimfani Musna

Institutions
1) Pendidikan Matematika, Sekolah Pascasarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
*riarimfanimusna[at]upi.edu
2) Departemen Pendidikan Matematika, Fakultas Matematika dan IPA, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

Abstract
The study was aimed at analysing the students- creative thinking skills at SMP Negeri 2 Bandung, focusing on the fluency, flexibility, originality, and elaboration aspects in solving the flat-side geometry problems. The descriptive type with qualitative approach was used. Tests, interviews, and documentation were utilized as the data collection methods. The students of class VIII-D were chosen as the subject, six of whom were taken as the sample, consisting of two students with high mathematical skills, two moderate, and two low. The findings reveal that the students with high mathematical skills experience no obstacle in the fluency and flexibility aspects, while in the originality aspect the inability to provide creative answers is sill exhibited by some students, and in the elaboration aspect the students represent lack of accuracy and detail in answering the elaborative questions. The moderate mathematical-skilled students still indicate difficulty in understanding the problems given, whereas the low mathematical-skilled students show difficulty in understanding the problems that, therefore, they can merely provide less-structured, unsystematic, undetailed answers, and they do not solve many problems as well. This is due to considerable obstacles they still experience.

Keywords
creative thinking; flat-side geometry

Topic
Mathematics Education

Link: https://ifory.id/abstract/Xtp6nLkhvBjD

Corresponding Author
Slamet Maulana

Institutions
Universitas Negeri Jakarta

Abstract
The aim of this research is to develop Physics problems that are appropriate to be used for the final assessment at the level of the High School Education unit in Physics with the Rasch Model analysis. Research method used in this study is Research and Development with the ADDIE model. Physics problems developed refers to the USBN problem grid issued by the Badan Standar Nasional Pendidikan (BSNP). Problems that have been developed will be validated by Physics experts, then tested on students, and analyzed for their quality using Rasch Model analysis. Validation results from Physics experts gave a score of 86.25% with very good criteria, it shows that Physics problems are feasible in terms of Physics material. The problems that have gone through the validation stage are then tested to several students and analyzed using the Rasch Model. Results of the analysis show that problems that have been developed have good validity and reliability. Problems that have been developed also have varying degrees of difficulty, from very easy to very difficult. Results of this analysis also show that problems that have been developed are not biased towards a particular group. Another thing obtained from the analysis using the Rasch Model is that students who carry out this test have consistent answers. Based on the results of the study, it can be concluded that Physics problems that have been developed are appropriate to be used for the final assessment at the level of High School education unit in Physics lesson.

Keywords
Physics problems, Final Assessment, Rasch Model

Topic
PHYSICS EDUCATION

Link: https://ifory.id/abstract/6uVMgEvF7bnx

Corresponding Author
Rizki Ramadhani

Institutions
a) Program Studi Pendidikan Matematika, Sekolah Pascasarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
b) Departemen Pendidikan Matematika, Fakultas Pendidikan Matematika dan IPA, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No.229, Bandung 40154

Abstract
The present study aims to describe mathematical reflective thinking skills of senior high school students according to the problems which examine mathematical reflective thinking skills of integrals subject matter. The descriptive method with qualitative approach was employed. A total of 3 students of grade XI in a senior high school in Banda Aceh City were selected as the subject. The data were collected through a test consisting of mathematical reflective thinking skills problems, interviews and documentation. The indicators of mathematical reflective thinking skills include identifying problems, interpreting problems, evaluating problems, predicting problem-solving, and drawing conclusions. The findings indicate that the students considered at the high level of cognitive skills have not been able to interpret integral-related problems clearly and correctly. The students considered at the medium level of cognitive skills have not been able to interpret and evaluate integral-related problems clearly and correctly. The students considered at the low level of cognitive skills have not been able to interpret, evaluate, predict the solving and draw conclusions regarding integral-related problems clearly and correctly.

Keywords
Reflective Thinking

Topic
Mathematics Education

Link: https://ifory.id/abstract/87GVqHh3zja4

Corresponding Author
ARYA DWI SUSETYADI

Institutions
a) Sekolah Pascasarjana Universitas Pendidikan Indonesia
Bandung, Indonesia
*aryadwisusetyadi[at]student.upi.edu

b) Sekolah Pascasarjana Universitas Pendidikan Indonesia
Bandung, Indonesia
*anna_permanasari[at]upi.edu

c)Sekolah Pascasarjana Universitas Pendidikan Indonesia
Bandung, Indonesia
*rian[at]upi.edu

Abstract
This study aims to examine the feasibility and the readability tests of STEM-Based Integrated Science Teaching Book Model Themed “Blood as Transportation System on Our Body”. The research was done on using quantitative descriptive methods. The subjects were 60 8th Junior High School Students and 8 Science Junior High School Teachers. The feasibility tests were done based on BSNP assessment guidelines. The research shows that the qualities of teaching book are feasible to use as resources and guidance for students. It was also found that the ease of understanding and reading makes this book acceptable and liked by students.

Keywords
Teaching book; integrated science; STEM education

Topic
STEM EDUCATION

Link: https://ifory.id/abstract/y7hqraepxCDT

Corresponding Author
NILAM JELFA RANI GUMANTI

Institutions
a) Magister of Mathematic Education, Universitas Lampung, Jl. Prof. Dr Sumantri Brojonegoro No. 1, Bandar Lampung, 35141, Indonesia
*nilam.jelfa[at]gmail.com
b) Departement Mathematic Education, Universitas Lampung, Jl. Prof. Dr Sumantri Brojonegoro No. 1, Bandar Lampung, 35141, Indonesia

Abstract
This research aims to figure out the ability of male and female students in problem-solving in the system of linear equation in two variables by using the descriptive method. In order to obtain the related depiction, the data is analyzed qualitatively and quantitatively. It is obtained through the test of problem-solving ability, which consists of two essays including 4 indicators aspect of problem-solving, which are understanding, planning, execution, and rechecking. The test is given to 15 male and 15 female students of Second Grade in one of SMPs in Bandar Lampung. The result is: 1) the abilities of problem-solving in the students are generally low, which is under 66% of students are failed, 2) the average achievement indicators of male students is significantly better than female, 3) problem-solving abilities between male and female students is different, which can be seen from the way they identify, solve, and make conclusion from the problems given. The result shows the need to develop effective learning innovations to facilitate problem-solving skills for male and female students.

Keywords
Problem Solving, Gender

Topic
Mathematics Education

Link: https://ifory.id/abstract/eA8p2BnR6mTh

Corresponding Author
Entis Sutisna

Institutions
Pakuan University
The Faculty of Education
Jalan Pakuan no 1 Bogor

Abstract
This study applies survey method with path analysis approach and aims to determine the effect image media usage on mathematics learning mathematics outcomes. The data of this study were obtained using questionnaires for image media variables and mathematics learning outcome variables using test questions. The validity of image media uses the Product Moment Person Correlation Coefficient formula and learning outcomes on Mathematics subjects using the Cronbach Alpha formula. The population in this study were 75 fourth grade students of Pabuaran 07 Bogor Elementary School. The sample taken by 43 students was obtained using the Taro Yamane formula with a precision of 5%. Tests for analysis prerequisites in the form of the Liliefors normality test. After the normality test, homogeneity testing is done by the Fisher test to show the population is homogeneous. Valid and reliable instruments are used to collect data, the results of which indicate that there are influences on the use of image media with the results of learning mathematics. The results show there is influence of the use of image media on mathematics learning outcomes which was shown by statistical analysis which produced a path coefficient (pxy) of 0.611. This shows the influence of using media images on mathematics learning outcomes, while the coefficient of determination (r2) is 0.37 or 37%. The remaining 63% is determined by other factors. The average mathematics learning outcome is 37% determined by the use of image media through the regression equation Ŷ = -17.31 + 1.05X. It means that each increase in one unit value of the use of image media will cause an increase in mathematics learning outcomes by 1.05 units. From the results of this study, it can be concluded that there is a positive influence on the use of image media on the fourth grade mathematics learning outcomes of Pabuaran 7 Elementary School.

Keywords
Media Usage, Mathematics Learning Outcomes, Path Analysis

Topic
STEM EDUCATION

Link: https://ifory.id/abstract/e2nwDgFubGZf

Corresponding Author
Rini Sulastri

Institutions
Universitas Pendidikan Indonesia

Abstract
Pedagogical Content Knowledge (PCK) is inseparable from the part of the teaching and learning process. As a prospective teacher-student, an understanding of PCK is needed to be able to interpret the learning process appropriately. The purpose of this study was to determine the perceptions or responses of prospective teachers about PCK and its application in the learning process. The research respondents consisted of 54 students of Mathematics Education from one of the universities in Bandung, West Java to fill out an online survey. The questionnaire in the form of a survey contains ten indicators of pedagogic knowledge, four indicators of content knowledge, and seven indicators of pedagogical content knowledge, and four cases that often occur in learning to be asked for solutions from respondents. Data from the questionnaire was processed and analyzed descriptively. The results of the online survey showed that only 33.3% of respondents had heard the term PCK, so 94.3% of respondents stated the importance of PCK to be known and understood by prospective teacher. Although the term PCK is not familiar to respondents, almost all of its indicators are often used and studied. The right solution is suggested by respondents for each case of learning problems. In this case, it is stated that PCK is a complex process in the learning process, where educating knowledge and skills must together in order to achieve the expected goals in learning.

Keywords
pedagogical content knowledge, pedagogic knowledge, content knowledge

Topic
Mathematics Education

Link: https://ifory.id/abstract/PMzvdAyhcL3C

Corresponding Author
A.Halim M.Si

Institutions
(a) Universitas Syiah Kuala, Aceh Indonesia 23111
(b) School of Education, Syracuse University, Syracuse, New York, USA 13244
(c) High School in Banda Aceh, Indonesia 23176

Abstract
Research in this area has been carried out a lot, but the research this time has its own uniqueness, where the use of IT in high school learning in Aceh province varies greatly. There are schools that prohibit students from accessing the internet on the grounds that they will have a negative impact on student behavior, but there are also schools that encourage students to use the internet as an additional source of reading. However, their learning outcomes have no significant difference. Based on some of these studies, it needs to be studied more deeply about the impact of internet usage on the learning outcomes of high school students, especially on Physics subjects. Research uses a quantitative approach, survey methods and data collection through documentation techniques and questionnaires. The target population of all high school students is in the city of Banda Aceh, but with a variety of considerations a sample of 31 students was taken randomly. Data processing is done by using product moment correlation test and the value is 0.2646 with a positive low category or there is no significant relationship between the use of the internet as a learning resource and student learning outcomes in physics subjects. Inference from the results of research, teachers are encouraged to motivate students to use IT in learning while still controlling their use

Keywords
Internet, Learning outcome, high school, physics learning

Topic
PHYSICS EDUCATION

Link: https://ifory.id/abstract/vLWPtCQNTDrm

Corresponding Author
Ika Deavy Martyaningrum

Institutions
a) Departemen Pendidikan Matematika, Universitas Pendidikan Indonesia, Jl. Dr.Setiabudi No. 229, Bandung 40154, Indonesia
*) ikadeavy[at]upi.edu

Abstract
The purpose of the study is to describe students- mathematics reflective thinking skill and habits of mind. The method in this study was qualitative-descriptive. The data was collected by using mathematics reflective thinking written test, habits of mind scale, and interviews. The subjects were two students of grade-ten of senior high school in Kebumen, Central Java. The result show that the first student can solve all of aspects of mathematics reflective thinking skill, namely reacting, elaborating, and contemplating. The other student can solve only two aspects of mathematics reflective thinking skill, namely reacting and elaborating. Moreover, the first student is better than the second student in three habits of mind indicators, namely can survive, intuitive, and using a senses to collect and process the data.

Keywords
Mathematics Reflective Thinking Skills, Habits of mind

Topic
Mathematics Education

Link: https://ifory.id/abstract/t6mFKcYxfdGr

Corresponding Author
Indah Widiati

Institutions
(a*) Universitas Islam Riau
Jl. Kaharudin Nasution No 113 Pekanbaru-Riau

(b) Universitas Pendidikan Indonesia
Jl. DR. Setiabudi no 29 Bandung-Jawa Barat

Abstract
. Students of prospective mathematics teachers often design mathematical test instruments based on the questions contained in the mathematics textbook. The question can be modified or directly using the existing problem. This certainly does not train students creativity in designing mathematical test instruments, especially about applications in the social, economic and environmental fields. This study aims to analyze the creativity of prospective mathematics teachers in designing mathematical test instruments. This research was carried out qualitatively a type of phenomenology with 5 respondents namely students of prospective mathematics teachers. Based on the results of in-depth interviews and documentation of mathematical test instrument designs by prospective mathematics teacher students, the results showed that prospective mathematics teacher students had difficulty in designing application problems in the environmental field. This is because students are not used to designing application questions. For social and economic aspects, some students are able to design the problem but the problems given are limited to using examples in the social and economic fields without incorporating elements of character values in them.

Keywords
Pre-Service Mathematics Teachers, Creativity, Social, Economic, Environment

Topic
Mathematics Education

Link: https://ifory.id/abstract/hURCAjNKBb4f

Corresponding Author
Sudarningsih Sudarningsih

Institutions
Department of Physics, Faculty of Mathematics and Natural Sciences,
Universitas Lambung Mangkurat, Banjarmasin 70124, Indonesia

Abstract
Rock magnetic methods have been used in environmental studies, including monitoring anthropogenic pollutions in the form of heavy metals in soils and sediments. Such environmental studies have never been carried out in river sediments from peatlands environment in the tropics. In this study, sediments from Martapura River were characterized for magnetic and heavy metal contents. Martapura River is a river that has a function as a source of PDAM (Regional Water Company) and its as a MCK (bath, toilet and wash) place for the community along the river. Considering that in South Kalimantan there are many mines which are indirectly related to the Martapura River and studies on the Martapura River surface sediments that are related to their magnetic properties and pollution have never been carried out, this research is important to do. Surface sediment samples were taken and measured by a magnetic measurements (magnetic susceptibility) and heavy metal contents (Atomic absorption spectrometer or AAS). The results show that surface sediments have low mass-specific magnetic susceptibility ​​varying from 196.0 to 415.0 × 10-8 m3kg-1 (on average of 231.0 × 10-8 m3kg-1) because influenced by the peatlands environment.The content of heavy metals contained in sediments such as Cu, Zn, Fe, Mn, Al, Na, Ti and Hg. The content of heavy metals in surface sediments that have exceeded the threshold of pollution are Fe and Mn.

Keywords
River sediments, pollution, heavy metals, rock magnetism, Martapura River

Topic
Environmental Magnetism

Link: https://ifory.id/abstract/PGcYa6gUqAxC

Corresponding Author
Dira Ayu Annisa

Institutions
1Program Studi Magister Pendidikan Kimia, Sekolah Pasca Sarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
2Departemen Kimia, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

*diraayuannisa[at]upi.edu

Abstract
The purpose of this study is to obtain information about the conception of pre-service chemistry teachers related to chemical contents in the context of conductive glass. Descriptive research method was chosen as the method in this study and the analysis was carried out quantitatively and qualitatively with 27 participants in the fourth semester at one of the universities in Bandar Lampung. The instrument used were 11 essay questions covered in 7 different discourses. The results obtained will be used to make didactic design in learning in the context of conductive glass. Based on student answers, it is known that 70,3 % or 19 students still have a low understanding of the concepts of resistivity and semiconductor. The low level of understanding shows that there are still many students who do not understand the chemical contents and become the basic for researcher in making didactic design to teach chemical contents in the context of conductive glass.

Keywords
conception; conductive glass; resistivity; semiconductor; didactic design

Topic
Chemistry Education

Link: https://ifory.id/abstract/K2rEGNf3b68B

Corresponding Author
I Nyoman Try Upayogi

Institutions
1 Departemen Pendidikan Ilmu Pengetahuan Alam, Program Pascasarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

2 Departemen Pendidikan Kimia, Program Pascasarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

Abstract
Teacher leadership is one of the important components of school reform. Therefore, teacher leadership development needs to be done to improve teacher professionalism and teacher quality. This research shows how teacher leadership develops during learning activities. This research was conducted in junior high school about science subjects. This research is a case study that occurs in junior high schools in the development of teacher leadership while the following learning. Participants in Lesson Study activities were 36 teachers from a school in Sumedang District. The background of the teachers who take part in the program is not only natural science teachers. There are also social science teachers, linguistic teachers, art teachers, and sports teachers who take place in this lesson study program. This research shows that teachers can develop themselves, develop teams, and develop their school institutions during the program. The attitude of teacher leadership arises and develops starting from the planning phase, the do phase and the reflection phase. The teacher model looks capable of inspiring colleagues and students in the class. the teachers mental attitude to dare to take the risk of being a model teacher in lesson study activities is the key to the development of teacher leadership attitudes.

Keywords
teacher leadership, lesson study,

Topic
Science Education

Link: https://ifory.id/abstract/hdbj6QZ8fGvU

Corresponding Author
Naufal Asyqar Fatio

Institutions
(a) Magister Pendidikan Matematika, Sekolah Pascasarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung 40154, Indonesia.
*naufalasyq[at]upi.edu
(b) Departemen Pendidikan Matematika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung 40154, Indonesia.

Abstract
The objectives of this study was to determine the profile of student-s error, student-s misconception, cause of student misconception, and students learning difficulties on system of linear equation in two varibles topic. The research was carried out by giving test of concept understanding on that topic. Subject of the study were junior high school students who had studied system of linear equation in two variables topic. The results of the study revealed that there were the students error profile, six students misconception profiles, four causes of students- misconceptions, and seven causes of learning difficulties. Based on the results of the students test it was found 71% of students had difficulty in determining the solution of system of linear equations in two variables algebraic form. This indicated students had difficulty in using, utilizing, and choosing a particular procedure on this topic. In addition, from the results of teachers-s interview, it was found one of the causes students- misconception to be the inaccuracy definition of system of linear equation in two variables. Students learning difficulties were mostly derived from student learning activities at school.

Keywords
student-s error; student-s misconception; student-s learning difficulties; System of linear equation in two variables.

Topic
Mathematics Education

Link: https://ifory.id/abstract/xtBNDhVEeyUM

Corresponding Author
Harun Abdul Rohman

Institutions
(a) Departemen Pendidikan Matematika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

*Harun88pltg[at]upi.edu

Abstract
An ellipse can be obtained through the conic section, if the plane intersects one of the pieces of the cone and its axis but is not perpendicular to the axis, the intersection will be an ellipse. Besides that, a circular cylinder cut by a plane that has a slope between 0 degrees and 90 degrees against the base of the circular cylinder, the intersection forms an ellipse. The purpose of this study that 1) determine the equation of the ellipse in terms of the circular cylinder section approach and 2) determine the area of the ellipse in terms of the circular cylinder section approach. The method we used in this research is literature studies from several books that are relevant to research. The results showed that 1) the equation of ellipse can be derived from the approach of circular cylinder section and 2) the area of ellipse can be obtained using the circular cylinder section approach. We conclude using this circular cylinder section approach, we can obtain the same formula both for equation and area as the conic section.

Keywords
the circular cylinder section, the equation of ellipse, the area of ellipse

Topic
Mathematics Education

Link: https://ifory.id/abstract/BXz4vpfWuyQk

Corresponding Author
Istianah Nusorudin

Institutions
Universitas Negeri Jakarta

Abstract
Abstract: This paper portrays research into an innovative curriculum project of dilemma stories which was conducted at a secondary school in Indonesia, 10 graders with 60 students. The research focused on the integration of Number Head Together in dilemma stories approach for students engagement in Organic Chemistry learning. Dilemma stories on the topics of formaldehida, alcoholic drinks, paracetamol drugs, and butter and margarine were developed in this research study. A qualitative approach was implemented with multiple methods including interviews, reflective journals, and classroom observations. The results of the research showed the effects of this innovative approach on students- development of their critical thinking, creative thinking, emphatic communication skills, problem-solving skills, sense of responsibility, communication skills, religious attitude, argumentation skills, and confidence. Students learnt to solve the dilemma problems in real situations. The teacher became involved in this innovative approach for engaging students and improving their learning quality. In conclusion, the dilemmas stories approach has engaged the teacher and students in meaningful chemistry learning experiences. Keywords: Dilemma stories, Organic chemistry, Numbered heads together

Keywords
Dilemma stories, Organic chemistry, Numbered heads together

Topic
Chemistry Education

Link: https://ifory.id/abstract/ZTHGfRKxq8rB