Indonesia Conference Directory

Corresponding Author
AWI .

Institutions
a) Department of Mathematics FMIPA Universitas Negeri Makassar, Jln. Daeng Tata, Makassar 90224, Indonesia
b) Department of Mathematics Education FKIP Universitas Muhammadiyah Makassar, Jln. Sultan Alauddin No.259, Makassar 90224, Indonesia

Abstract
This was developmental research aimed at developing a test for testing students- mathematics competency as prospective secondary school mathematics teachers. The test result will be the prerequisite ability which will determine mathematics students- feasibility to step forward to the research proposal seminar to undertake their thesis. The research respondents were 32 third-year students of the mathematics department of FMIPA UNM. Within this research, the test was developed through five phases, namely: (1) devising the test specification; (2) writing down the test; (3) reviewing the test; (4) trying out the test; (5) analyzing the items of the test from both difficulty level and item discrimination. Determination of the accepted items after trying out referred to the analysis results based on item discrimination, i.e. the ability of the questions to differ students with high from low ability in mathematics. The measure of the item discrimination coefficient was from –1 to 1. The analysis results were classified into three categories, namely: accepted without revision (if the item discrimination coefficient is greater than 0.30), accepted with revision (if the item discrimination coefficient is from 0.10 to 0.29), and rejected (if the item discrimination coefficient is less than 0.10). There were 45 multiple-choice items written, tried out, and then analyzed. The analysis results showed that 21 items were accepted without revision, 17 items were accepted with revision in terms of the language construction and the difficulty level of the items, whereas 7 items the rest were rejected. Thus, 38 of the 45 items were feasible to use in testing the students- mathematics competency.

Keywords
Test, Competency, Prospective Mathematics Teacher

Topic
Mathematics Education

Link: https://ifory.id/abstract/7tcyFEGJkVrW

Corresponding Author
Martin Bernard

Institutions
a) Fakultas Pendidikan Matematika dan Sains, Institut Keguruan dan Ilmu Pendidikan Siliwangi
Jalan Terusan Jenderal Sudirman, Cimahi 40526, Indonesia
*pamartin23rnard[at]gmail.com

Abstract
Development of extensive animation media for the concept of moving images developed by students creative ideas, through extensive field analysis of various forms converted into rectangular shapes through several ways to use VBA for PowerPoint. The language of this program helps students to make the thinking process they do not need to memorize material related to vector analysis material about student thinking material which is part of the VBA language program with new ideas for students. Indicators that determine high-level thinking skills are 1) analysis, identifying concepts and being able to link concepts 2) Evaluating, students try to make steps systematically 3) Creating, student-oriented students to develop broad-based flat animation media by applying vector analysis into VBA for PowerPoint languages. The research method is Research and Development with 5 stages namely Analysis, Design, Development, Implementation, and Evaluation. For the assessment of media development in the first stage validated by media experts and material experts and for the second stage validated by users or students.

Keywords
Flat Field Extensive Animation Media, VBA for Powerpoint, High Level Thinking Skills, Vector Analysis.

Topic
Mathematics Education

Link: https://ifory.id/abstract/FkT4jUqnMG2y

Corresponding Author
Martin Bernard

Institutions
a) Fakultas Pendidikan Matematika dan Sains, Institut Keguruan dan Ilmu Pendidikan Siliwangi Jalan Terusan Jenderal Sudirman, Cimahi 40526, Indonesia
*pamartin23rnard[at]gmail.com

Abstract
The third dimension is a subject that is still considered difficult for high school students, because students have not been able to understand the construction of images from three dimensions to two dimensional shapes. And the main factors that cause other students that make it difficult for students to learn the three dimensions of euclid geometric concepts based on 5 basic postulates that should be developed, but most teachers ignore this, because it is preferred to calculate the appropriate formula. This, limiting students to explore the science of geometry, plus the fear of students when trying to solve geometry problems. To bring up the high-level abilities of high school students, it is to provide motivation to learn, by providing stimulus to students about basic concepts that are easily mastered by students, and students are able to answer from the results of their own problem solving. Using the links 5 Euclid postulates help visualize students, students try to analyze the relation of geometric problems to postulates. After that, students express opinions from the results of the thinking process, reevaluate if something goes wrong, and make their own conclusions to solve geometry problems with the Geogebra Javascript. Third dimension learning is more interactive and interesting visually, so students are able to be motivated to deepen the three dimensions.

Keywords
High Order Thinking Skills Mathematics, Motivation, Three Dimensions, Euclids Postulate Philosophy, Javascript Geogebra

Topic
Mathematics Education

Link: https://ifory.id/abstract/ncZkxzDtMvf6

Corresponding Author
Damianus Dao Samo

Institutions
Nusa Cendana University

Abstract
The purpose of this study was to produce a theoretical formula for developing the mathematics students higher-order thinking skills. This is a qualitative research that applies grounded theory which is a qualitative approach to produce and develop a theory based on the empirical data collected by the researcher. The subjects of this study are mathematics education students at FKIP Undana by considering proportional gender, demographics and mathematics skills. The written data were analyzed qualitatively by using the indicators of higher-order thinking skills then an in-depth interview about the subjects writing ability and thinking habit, influenced factors as well as other issues that relevant with the development of the subjects higher-order thinking skills was conducted. The process of theory formation through the stages of open coding, axial coding and selective coding. The stages of data analysis resulted an empirical theory of developing higher-order thinking skills namely 1) building motivation and confidence; 2) contextual learning (cultural context); 3) habit of asking scientific question, 4) group discussion; 5) higher-order thinking exercises; 6) family and community discussion routine; and 7) learn to modify questions. The seven points describe the whole process and support of personal self, lecturers and parents

Keywords
higher-order thinking skill, grounded theory

Topic
Mathematics Education

Link: https://ifory.id/abstract/WfCjmX9ALGv3

Corresponding Author
Neni Prihartini

Institutions
-

Abstract
Probability is one of the subjects in learning mathematics in the ninth grade. Based on the results of preliminary tests conducted, students still get difficulties in restating a concept of probability, students still mistaken in giving examples and not examples of probability events, and the relationship between theoretical and empirical probability, and also students still have difficulty in exploring empirical probability. That is because learning done in school is less meaningful for students. Therefore, this study aims to develop learning probability through the Realistic Mathematics Education (RME) approach. This research using design research method which consists of three cyclic phases, such as though experiment, instruction experiment, and retrospective analysis. Data in this study was obtained from student worksheets, interview sheets, field notes sheets, Hypothesis Learning Trajectory (HLT), voice recordings, and pictures. Based on the results of a retrospective analysis, learning with the RME approach can develop students ability in understanding probability concept. Students can understand theoretical and empirical probability, comparing the chance of events, and understanding the frequency of expectations in empirical events. RME principles can support students- thinking through the use of contexts, the use of the models, the use of student construction results, interactivity, and the intertwining of various learning strands.

Keywords
Understanding, Probability, RME

Topic
Mathematics Education

Link: https://ifory.id/abstract/rMBPCy4Fg6wT

Corresponding Author
Zuida Ratih Hendrastuti

Institutions
Tidar University

Abstract
The aims of this study were to develop a product in the form of mathematics learning with a RME approach that is oriented to mathematical connection skills and student confidence with valid, practical, and effective qualities. The materials developed consists of lesson plan, student-s works sheet, and tes learning outcomes. This research was a research development with the reference ADDIE. The results of the study show that the learning devices developed valid are indicated by the results of the assessment of each learning device having an average score with the criteria of "very good". Practical assessment is indicated by the results of the teachers assessment of the learning device which is 30 with the criteria of "very good", while the assessment by students is 87.10% with the criteria of "good", and the average learning implementation is 83.88%. Effective assessment is indicated by the results of the results of the mathematical connection ability test of 83.33% and the student confidence questionnaire has a presentation of 86.67%.

Keywords
development, realistic mathematics education approach, mathematical connection, self-confidence

Topic
Mathematics Education

Link: https://ifory.id/abstract/ZGANKh47DyM8

Corresponding Author
Wahidah Halimahnur

Institutions
Program Studi Pendidikan Matematika
Sekolah Pascasarjana
Universitas Pendidikan Indonesia
Jl. Dr. Setiabudi No 229, Bandung 40154, Indonesia
wahidah_h[at]upi.edu (1), yskusumah[at]upi.edu (2)

Abstract
Problem posing as one of mathematical competencies is required by young generations to face complex problems in the era of Industrial Revolution 4.0. Prospective mathematics teachers, who will become a teacher have to teach their students (as the member of young generations) problem posing skills. However, not all prospective mathematics teachers are good at problem posing. The purpose of this study is to find out how problem posing can enhance professionalism and how to develop mathematical problem posing ability of prospective mathematics teachers. The method used is descriptive qualitative. There are literature reviews on 20 journals from the past 10 years that support and related to this study. The results show that developing mathematical problem posing ability can support and enhance prospective mathematics teachers professionalism in order to face the education in the era of Industrial Revolution 4.0.

Keywords
Mathematical Problem Posing; Prospective Mathematics Teachers

Topic
Mathematics Education

Link: https://ifory.id/abstract/LFeU9B8zC7dN

Corresponding Author
SRI ULFA INSANI

Institutions
Mathematics Education, Universitas Pahlawan Tuanku Tambusai, Jl. Tuanku Tambusai No. 23, Bangkinang, Riau, Indonesia.

Abstract
Abstract. The aim of this research is to produce mathematics instructional package based on problem in senior high school students oriented to student-s critical thinking skills and curiosity based on aspects of validity, practicality, and effectiveness. This study was research and development with used ADDIE-s model (Analyze, Design, Develop, Implement, and Evaluate). The research subjects were 10th grade students of MAN 4 Kampar. The research instruments were validation sheets, teacher assessment sheets, student assessment sheets, learning implementation observation sheets, critical thinking skills test, and curiosity questionnaires. The instructional packages were valid if the experts judgment were categorized minimum as valid. Then the instructional packages were practical if the teachers assessment and students assessment were categorized minimum as practical. Furthermore, the instructional packages were effective if the percentage of students who completed in the test of critical thinking skills reaches at least 70% and if the percentage of the results of the students curiosity questionnaire reaches at least 75%. The results of this research show that mathematics instructional package was very valid. Then based on the results of learning implementation show that mathematics instructional package was very practical. Furthermore, the mathematics instructional package was effective based on the results of evaluation of critical thinking skills and student curiosity questionnaires.

Keywords
instructional package, critical thinking skill, curiosity

Topic
Mathematics Education

Link: https://ifory.id/abstract/ML7rydEGRuQx

Corresponding Author
Ningrum Astriawati

Institutions
a,b,c Yogyakarta Maritime Academy
Jl. Magelang KM 4.4 Pos 42 Tromol, Kutu Dukuh, Sinduadi, Mlati, Kabupaten Sleman, Daerah Istimewa Yogyakarta 55284

Abstract
This research-s aims to produce applied mathematics learning materials for nautical science grade III based on CO-PROL (Cooperative On Problem Based Learning) models which is valid, practicable and effective.This study was a research and development Branch (ADDIE) model which is consisted of 5 (five) steps, those are: (1) Analysis, (2) Design, (3) Development, (4)Implementation, and (5) Evaluation. The quality of learning resouce is determined based on Nieveen criteria, including validity, practicality, and effectiveness. The subject of this research were 36 cadets of Nautical Science Yogyakarta Maritime Academy. The research instrument included validation and observation sheets for learning implementation, questionnaires for lecturers and cadets, and the instrument of effectiveness of learning resouces. The data analysis technique is a quantitative descriptive technique.The result shows that the teaching materials are valid, practicable, and effective in terms of improving cadets- learning outcomes

Keywords
teaching materials, CO-PROL, learning outcomes

Topic
Mathematics Education

Link: https://ifory.id/abstract/m4nQFc6hrJaY

Corresponding Author
Sowanto Sowanto

Institutions
a) Department of Mathematics Education, STKIP Bima, Jl. Piere Tendean, Bima, Indonesia
(b) Department of Mathematics Education, Fakultas Ilmu Tarbiyah & Keguruan (FITK) UIN Syarif hidayatullah, Jakarta
*sowantos[at]gmail.com

Abstract
This research is based on the absence of teaching materials on statistical methods oriented to the Indonesian National Qualification Framework (INQF) in the era of the industrial revolution 4.0 which can facilitate students majoring in mathematics education at STKIP Bima with a hybrid learning model that combines face-to-face learning in the classroom and e-learning. The purpose of this study is to produce products in the form of teaching materials that design at online class that is adjusted to hybrid learning oriented to INQF. The method used is design research which includes: (1) preliminary design, in this phase is made Hypothetical Learning Trajectory (HLT); (2) experiments, in this phase existing designs are tested to students; (3) retrospective analysis, in this phase the researchers compare the HLT with the actual student learning process. The results of this research showed that tasks which were presented in teaching materials that combine face-to-face learning in the classroom and e-learning in the form of online classes by considering learning obstacle and preliminary study able to facilitate students to understand the preliminary statistics material, data presentation, and measure of central tendency.

Keywords
Hybrid Learning, Development of Teaching Materials, Indonesian National Qualification Framework

Topic
Mathematics Education

Link: https://ifory.id/abstract/cqvmybU4X6MB

Corresponding Author
FEBRINNA MONA SAPUTRI

Institutions
a) Master of Mathematics Education, Sriwijaya University, Komplek Unsri Jalan Srijaya Negara, Bukit Lama, Kecamatan Ilir Barat I, Palembang 30137, Indonesia
*ratu.ilma[at]yahoo.com
b)Master of Mathematics Education, Sriwijaya University, Komplek Unsri Jalan Srijaya Negara, Bukit Lama, Kecamatan Ilir Barat I, Palembang 30137, Indonesia

Abstract
The purpose of this research was to produce mathematic questions of PISA type using online shop context that was valid, practical, and has a potential effect on students mathematical literacy abilities. The method of this research is design research type development studies, which has two stages: preliminary and formative evaluation. This research involved high school students of class X in Palembang, South Sumatera Indonesia. Data collection techniques are walk-throughs, documents, observations, interviews, and tests. In the field test stage, the strategy of students answers when solving problems raises various mathematical literacy abilities, namely mathematical abilities; using language and operation symbolic, formal and technical; and communication. There are 3 of 29 students who use the mathematical ability, use language and operation symbolic, formal, technical and communication. There are 14 of 29 students who use language and operation symbolic, formal, technical and communication. Then, only 12 of 29 students who use communication abilities

Keywords
Design Research;PISA;Online shop

Topic
Mathematics Education

Link: https://ifory.id/abstract/wBndNARTF9CU

Corresponding Author
Lia Sulistiani

Institutions
Sriwijaya University

Abstract
This study aims to generate the valid and practical PISA-like mathematics problems on uncertainty and data using Indonesian food context. It also aims to see the potential effects of the problems towards the high school students- mathematical ability. This study used a design research methodology with the type of development study which was divided into two stages, namely preliminary stage and formative evaluation stage. This study produced valid and practical PISA-like mathematics problems on uncertainty and data content which have a potential effect on the senior high school students- mathematical literacy ability. The validity was determined based on the expert review, while the practicality was determined based on one-to-one and small group assessment. Based on the students answer, it was found that the problems had potential effects that arouse the ability, communication, reasoning and argument, representation and devising strategies for problem-solving.

Keywords
PISA, Mathematical Literacy, Design Research

Topic
Mathematics Education

Link: https://ifory.id/abstract/jdrJPZKqvz7L

Corresponding Author
Frena Fardillah

Institutions
Universitas Pendidikan Indonesia
Universitas Muhammadiyah Tangerang

Abstract
This study aims to develop self-regulated learning of Industrial Engineering students through Minitab software-based teaching materials. This is done because there is no Minitab software-based instructional material to develop student self-regulated learning. The importance of self-regulated learning in students has developed instructional materials for instructional materials that are able to develop student self-regulated learning. The products of this study produce instructional materials in the form of student worksheets. The research method uses 4D development, namely: 1) Define, develop problem analysis and potential, 2) Design, make the initial product (prototype) product design tailored to existing needs and potential, 3) Development, in two stages: expert appraisal and developmental testing, 4) Disseminate, do validation testing. After expert trials, instructional materials were in the decent category (80%) and could be used as teaching materials for supporting lectures.

Keywords
Self-Regulated Learning, Instructional Materials, Statistics, Minitab Software

Topic
Mathematics Education

Link: https://ifory.id/abstract/twuQnhd8aqyz

Corresponding Author
Martin Bernard

Institutions
a) Fakultas Pendidikan Matematika dan Sains, Institut Keguruan dan Ilmu Pendidikan Siliwangi
Jalan Terusan Jenderal Sudirman, Cimahi 40526, Indonesia
*pamartin23rnard[at]gmail.com
b) Fakultas Ilmu Pendidikan, Institut Keguruan dan Ilmu Pendidikan Siliwangi
Jalan Terusan Jenderal Sudirman, Cimahi 40526, Indonesia

Abstract
Mathematics is a subject that must be mastered by everyone at various levels because every activity in everyday life, everyone must have something to do with mathematical problems. Once the importance of mathematics in each individual, the need for the introduction of mathematics is given to children from an early age. However, many are found in the field that students have not been able to master the basic concepts of mathematics are numbers at every level. As a result, the impact on other mathematical materials, so assumes that mathematics is the most difficult subject. With this problem, it can be overcome by using money learning media related to numbers, the goal is to help students easily understand about numbers that can be applied in daily life. Because it is limited to the time and cost of making media, the best step is the use of ICT, namely Powerpoint software using Visual Basic Application that makes money learning media more attractive, fosters students enthusiasm, and encourages students confidence to make appropriate decisions based on student experience in class and in the environment. The study was conducted to develop a VBA Powerpoint-based money media addressing the difficulties of elementary school students, to improve students understanding skills and dare to make the right decisions.

Keywords
Money Media, VBA for Powerpoint, Student Understanding Ability, Decision Making Skills

Topic
Mathematics Education

Link: https://ifory.id/abstract/8Qc4XFqyzxUh

Corresponding Author
Martin Bernard

Institutions
a)Fakultas Pendidikan Matematika dan Sains, Institut Keguruan dan Ilmu Pendidikan Siliwangi, Jalan Terusan Jenderal Sudirman, Cimahi 40526, Indonesia
*pamartin23rnard[at]gmail.com

Abstract
Special needs children are children with characteristics that are different from disability in general without showing mental, emotional, or physical abilities. Special needs children find it difficult to define categories in understanding lessons and most of the views of the community state that children with special needs are considered as disabled children who cannot do anything. Especially in terms of academic achievement from language, mathematics and science. This can show that children with special needs cannot distinguish numbers properly so that errors occur in the calculation process. Even though mathematics is very necessary to apply it to daily life personally that develops society. Developing the ability to understand numbers, each student is given the opportunity to answer a different one to explain and the approach used is Open Ended. The teaching aids used are in the form of mathematics learning media created on Microsoft Excel based on VBA. VBA language functions so that images are more interesting and interactive so student learning independence and Self Efficacy learning outcomes are achieved.

Keywords
Developing Visual Basic Applications for Excel improve Learning Independence and Self Efficacy Children with Special Needs Through Open-Ended

Topic
Mathematics Education

Link: https://ifory.id/abstract/8p9H3dfNcvEX

Corresponding Author
Rina Febriana

Institutions
1,2,3Mathematics Education Department, STKIP PGRI Sumatera Barat, Jl. Gunung Pangilun, Padang 25143, Indonesia

Abstract
Inadequate textbooks, difficult language to understand and student-s low motivation became causing student scores on space geometry lectures to be low. This study aimed to develop problem-based learning based e-learning. The development used Plomp model consisting of 3 phases namely preliminary research, prototyping phase, and assessment phase. Those materials in e-learning were all materials existing Problem-Based Learning of Space Geometry module that were valid and practical. The instruments used were validity sheets, practical sheets and questionnaires. Data analysis technique used was descriptive qualitative and quantitative. The research shows that those contents of the module integrated into e-learning are categorized into valid and practical and result of Information and Technology expert validation states that requirements should exist in e-learning have also been fulfilled both in terms of construction and content

Keywords
Development, Problem-Based Larning, E-Learning

Topic
Mathematics Education

Link: https://ifory.id/abstract/EKZegacpR7Db

Corresponding Author
Sofwan Hadi

Institutions
IAIN Ponorogo

Abstract
Adaptive reasoning is the ability of students to process thoughts received by students. It is used to solve problems that are received and share thoughts to convince acquired knowledge related to mathematics. This ability must be mastered by MI students so that mathematical concepts are mastered not only in the form of calculations but also in their application in daily life. In the era of Industry 4.0 mathematical communication can be improved by using various innovations and digital-based media, one of which is the Macromedia program. Learning Media Design is analyzed by the mix method approach. The subjects in this study were 20 MI students at MI Tarbiyatul Islam Ponorogo. Qualitative methods in this study were conducted to obtain forms of media that can improve students mathematical communication. The results of this study found that there were 4 aspects in improving communication skills, namely exercises in solving problems related to day-to-day life, understanding the material of integer counting operations, student self-confidence, and mathematical literacy writing skills. Quantitative methods of comparison are used to test the results of learning media that are made. After the results of the development there is an increase in students communication skills after using the media.

Keywords
Adaptive Reasoning; Learning Education; Madrasah Ibtidaiyah;

Topic
Mathematics Education

Link: https://ifory.id/abstract/EQ24umJYKB7T

Corresponding Author
Hepsi Nindiasari

Institutions
University of Sultan Ageng Tirtayasa

Abstract
Mathematical reflective thinking skills need to be developed because it supports high-level thinking skills, but as important as it is still lacking in the availability of teaching materials, especially textbooks that develop these abilities. Innovative approaches also support ones success in understanding teaching materials. The innovative approach used is a contextual approach, Problem base Learning, and Metacognitive scaffolding. Character and culture need to be integrated in teaching books in preparation for the era of globalization. This study aims to produce textbooks to develop mathematical reflective thinking skills with innovative approaches and integrated with local character and culture for middle school students. This research uses research and development methods. The conclusions from this study have been produced teaching books to develop the ability to think reflective mathematically with a variety of innovative approaches and character-based and local culture. Based on expert testing and the small scale of the book is suitable for use.

Keywords
Textbooks, Local Culture, mathematical reflective thinking, Character.

Topic
Mathematics Education

Link: https://ifory.id/abstract/aW8hqcd9Ttj6

Corresponding Author
Siti Ruqoyyah

Institutions
IKIP Siliwangi

Abstract
The background of this study is the lack of ability of PGSD Siliwangi PGSD students to analyze innovative mathematics learning models. The purpose of this study was to improve the analysis and implementation skills of PGSD students regarding innovative mathematics learning . The specific target to be achieved in this study is the formation of appropriate and efficient teaching materials in the implementation of elementary school mathematics learning internships. This study uses a quantitative approach and uses a quasi-experimental method. The population in this study were primary teacher Educationstiudents of IKIPSiliwangi, while the sample consisted from 70 maha students are divided into 35 students in class A1 class of 2017 as an experimental group and 35 Most students in class A2 class 2017 as a control group . The instrument used consisted of a written test regarding learning models innovative , observation and interviews. The results show that there is an increased ability to analyze student by using model-modelinnovative learning better than usual learning.

Keywords
Ability to Analyze, innovative learning models.

Topic
Mathematics Education

Link: https://ifory.id/abstract/Qu8VKGY7xWgH

Corresponding Author
Tia Agnesa

Institutions
a) Pendidikan Matematika, Universitas Lampung, Jl. Prof. Dr. Sumantri Brojonegoro No. 1, Bandar Lampung 35145, Indonesia
*tia.agnesa88[at]fkip.unila.ac.id
b) Pendidikan Matematika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
c) Pendidikan Guru Sekolah Dasar, Universitas Lampung, Jl. Prof. Dr. Sumantri Brojonegoro No. 1, Bandar Lampung 35145, Indonesia

Abstract
The main objective of this research is to develop a new didactic design that can optimize the development of students abilities, especially in the area of parallelogram and trapezium material. Didactic design was successfully developed throught three formal steps which was done by the researcher during the research process, namely didactic situation analysis before learning in the form of hypothetical didactic design including ADP, metapedadidactic analysis that is the implementation process of hypotetic didactic design, and retrospective analysis in the form of analysis linking the results of hypothetical didactic situation analysis with the results of an metapedadidactic that used to formulate empirical didactic designs. Composing the hypothetical didactic design is preceded by a preliminary analysis including studies of relevant previous researchs, analysis of learning videos, surveys of textbooks on school mathematics, theoretical analysis, and personalization conducted by the researcher. Design implementation is carried out in a junior high school in Bandung involving 94 students from three different classes. It is possible if the empirical didactic design which was produced in this study can be further developed through the same three formal steps

Keywords
didactical design research, area of parallelogram and trapezium

Topic
Mathematics Education

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

Corresponding Author
Martin Bernard

Institutions
a)Fakultas Pendidikan Matematika dan Sains, Institut Keguruan dan Ilmu Pendidikan Siliwangi, Jalan Terusan Jenderal Sudirman, Cimahi, 40526, Indonesia
*pamartin23rnard[at]gmail.com

Abstract
Geometry is a part of mathematics that deals with points, lines, fields, waking up flat, and building space. Basic knowledge for understanding geometry, namely the principle of the euclid postulate, phytagoras theorem, Thales is a mathematical philosophy that develops geometry. And the process of their thinking that students must understand and master to understand geometry. Of course, students must have good analytical skills when dealing with geometry questions that can be solved based on definitions, theorems, axioms, and entries and measured based on cognitive abilities namely understanding, connection, communication, reasoning, critical and creative, each of which has indicators as reference. This can be seen from the results of students in geometric analysis of how to compile geogebraic scriting algorithms and run the language as a result of problem solving.

Keywords
Geometry Analysis, Geogebra Scripting, Student Cognitive Ability.

Topic
Mathematics Education

Link: https://ifory.id/abstract/tKP9BR2L6Wfw

Corresponding Author
Sri Hastuti Noer

Institutions
Faculty of Teacher Training and Education University of Lampung

Abstract
The efforts to improve students reflective thinking and self learning can be done through a learning process by providing contextual problems that generate curiosity, recognize what is known and what is needed from the problem, and provide opportunities for students to work, and draw conclusions from problem. One learning model that can facilitate these activities is guided discovery learning. This study aims to: 1) Design and develop guided discovery learning models to improve reflective thinking abillity and student self learning, 2) Analize the effectiveness of models and learning tools that are developed towards improving reflective thinking abillity and student self learning. The population subjects in this study were all eighth grade students of the State Junior High School in Bandar Lampung City. Each one of the sample schools was randomly selected from the high-rank and middle-rank schools. In each school the sample was taken randomly in two classes. One class as an experimental class, applied guided discovery learning, one class as a control class, which is applied to conventional learning. The instrument used is a test of reflective thinking ability and student self learning scale, interview guidelines, observation sheets and questionnaires. Based on the study it was concluded that: 1) The guided discovery model that was developed has met valid and practical criteria, 2) The guided discovery model that was developed effectively to improve students reflective thinking abillity and studets self learning both in high- rank scholl and middle- rank school.

Keywords
Guided discovery, reflektif thinking, self learning

Topic
Mathematics Education

Link: https://ifory.id/abstract/NeYUV6RMX72J

Corresponding Author
Wahyuni Puji Lestari

Institutions
Program Studi Tadris Matematika, Institut Agama Islam Negeri (IAIN) Bengkulu, Jl. Raden Fatah Pagar Dewa, Kota Bengkulu 65144, Indonesia.

Abstract
Abstract.The purpose of this research development is to develop guided inquiry-based worksheets on the material of Cubes and Beams in Class VII 22 State Junior High School. This research uses the Plomp development research model including the initial investigation phase (preliminary research), the development or prototype phase (development or prototyping phase), and the research phase (assessment phase). The LKS product test results show that the LKS developed on the material of Cubes and Beams are valid, effective and practical. So it can be concluded that this worksheet can be used in learning mathematics.

Keywords
Pengembangan LKS

Topic
Mathematics Education

Link: https://ifory.id/abstract/6rYfEmNU8jWu

Corresponding Author
Martin Bernard

Institutions
a) Fakultas Pendidikan Matematika dan Sains, Institut Keguruan dan Ilmu Pendidikan Siliwangi, Jalan Terusan Jenderal Sudirman, Cimahi 40526, Indonesia
*pamartin23rnard[at]gmail.com

Abstract
The research was aimed to show that developing a learning media impacted to improve students ability in mathematical learning. The process implementated the application of VBA for microsoft word in mathematical learning. The formulation of the problem in this research are whether 1) can developing media assisted VBA for microsoft word improve mathematical ability? 2) Did Students show positive response in learning process? ADDIE was used as approach in this research. There are five stages in ADDIE approach. Population of this research was in group with 34 samples of vocational students. The instruments are cognitive test, interview and observation. Based on the results of the process, there was an increasing in mathematical ability of vocational students in trigonometry lesson through media VBA for microsoft word. The implementation of learning process through media VBA for microsoft word was success. Students enjoyed the process, active, responsive, and enthusiastic. The conclusions are the developing of media VBA for microsoft word can improve mathematical ability of vocational students before and after using media, and students showed positive response to learn by media in trigonometry.

Keywords
Student Worksheets, VBA for Microsoft Word, Trigonometry

Topic
Mathematics Education

Link: https://ifory.id/abstract/qHK8pUNkCvxu

Corresponding Author
Chandra Novtiar

Institutions
a) Pendidikan Matematika, Institut Keguruan dan Ilmu Pendidikan Siliwangi
Jalan Terusan Jenderal Sudirman, Cimahi 40526, Indonesia
*chandramathitb07[at]gmail.com

Abstract
The aim of this study is to develop an innovative teaching and learning module in Linear Algebra assisted by Maple. This study used Research and Development (R&D) with 4D (Define, Design, Development and Dissemination) model as its methodology developed by Thiagarajan, but in this study, the methodology is limited up until Development stage only. Two instruments were used in this study: expert validation sheets and students response sheets. These instruments were used to determine the validity of this module. Validity analysis on three expert validator gave draft I as the result meanwhile validity analysis on the students response gave draft II as the result. In this study we used 4 months research on students of Mathematics Education Department, IKIP Siliwangi academic year 2014. The result of this study show that expert validity learning module is said to be valid with the results of validation from three expert validators having a value of 4.1 on a scale of 5 with very high validity of 58.82%. Limited trial for students showed a value of 3.44 on a scale of 5 with moderate validity of 63.16%.

Keywords
R&D, Linear Algebra, Maple Software

Topic
Mathematics Education

Link: https://ifory.id/abstract/CBYFjVyc9q7D

Corresponding Author
Nurfadilah Mahmud

Institutions
a) Mathematics Education Department, University of West Sulawesi, Majene, 91411, Indonesia.
b) Psychology Department, Universitas Negeri Makassar, Makassar, 90224, Indonesia
b) 5Mathematics Department, State University of Makassar, Makassar, 90224, Indonesia.

Abstract
This research is a type of development research that refers to the 4-D model. This study aims to produce a Basic Statistics learning tool based on interpersonal intelligence to develop the social skills of prospective teacher students who meet the validity criteria, practicality and effectiveness. This type of research on the development of the 4-D model consists of four stages, namely: 1. define, 2. design stage, 3. develop

Keywords
Interpersonal Intelligence; Social Competence; Development of Learning Device

Topic
Mathematics Education

Link: https://ifory.id/abstract/Hn28AzGNPbTp

Corresponding Author
Teddy Alfra Siagian

Institutions
1) Program Studi Pendidikan Matematika, Universitas Bengkulu, Jl. WR Supratman, Kota Bengkulu 38122, Indonesia
*teddysiagian[at]unib.ac.id
2) Program Studi Pendidikan Matematika, Universitas Negeri Medan, Jl. Willem Iskandar Pasar V, Kota Medan, 20221, Indonesia

Abstract
The purposes of this study were: 1) Developed problem-based on learning tools who meet the criteria are valid, pratical, and effective; 2) Described the improvement of mathematical problem solving skills of student using learning device based on problem based learning developed . Research development of 4-D model was done in two stages: 1) the development of learning devices; and 2) testing devices. The subject in this study were students of class X SMAN 1 Pematangsiantar, while the objects is the PBL developed, mathematical problem solving skill students. The results were obtained: 1) The learning devices based on PBL that developed have valid criteria, practical and effective; 2) There is an increased ability of mathematical problem solving skill of student using learning device based PBL developed.

Keywords
PBL devices development, mathematical problem solving ability

Topic
Mathematics Education

Link: https://ifory.id/abstract/24YGMyfwZxCt

Corresponding Author
idul adha

Institutions
1Program Studi Pendidikan Matematika, STKIP PGRI Lubuklinggau, Jl. Mayor Toha, Kota Lubuklinggau 31626, Indonesia
2Program Studi Pendidikan Matematika, STKIP PGRI Lubuklinggau, Lubuklinggau Jl. Mayor Toha, Kota Lubuklinggau 31626, Indonesia

Abstract
The purpose of this study is to produce student worksheets (LKS) which have a potential effect on student learning outcomes. The subjects of the study were students of SMP N 8 Lubuklinggau in class VII.D in the 2019/2020 school year. The approach used in the development of LKS is using the Indonesian realistic mathematics approach (PMRI). The method used in this research is research and development (R&D) using a 4-D model that has been modified to become 3-D. Which consists of defining, designing and developing. The potential effects of worksheets developed can be seen from the activities of students in working on problems in worksheets, where students more easily understand the mathematical concepts contained in worksheets. Of the 33 students who were the subjects of the study, 19 were in the excellent category or around 57.6%. Whereas in good category there are 7 people or around 21.2%, enough categories are obtained by 5 people or around 15.2% and less categories are obtained by 2 people or about 6%. Based on the results of these percentages it can be concluded that the worksheet designed has a potential effect on student learning outcomes.

Keywords
Development, LKS, 4D

Topic
Mathematics Education

Link: https://ifory.id/abstract/RkZu3En9ywQG

Corresponding Author
rahmi fauzana

Institutions
Departemen Pendidikan Matematika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
Departemen Pendidikan Matematika, STKIP PGRI Sumatera Barat, Jl. Gunung Pangilun, Padang 25172, Indonesia

Abstract
Trigonometry is one of the materials learned in the high school curriculum.. This study aims to develop valid and practicality development of students worksheet guided discovery trigonometry materials at the tenth grade of the school in the city of Padang. This research is a development research with ADDIE model which consists of five stages, namely Analysis, Design, Development, Implementation, and Evaluation. The subjects of this research were six students at the tenth grade (15-16 year olds). The instruments used in this research were student needs analysis, curriculum analysis, validation sheet and praticality questionnaires sheets. The results showed that students worksheet guided discovery trigonometry materials was very valid and very practical. Based on the results of the research, we recommend continuing the guided students worksheet guided discovery on trigonometry material for class tenth grade to see effectiveness.

Keywords
students worksheet, guided discovery, trigonometry

Topic
Mathematics Education

Link: https://ifory.id/abstract/UaxqL9VzE8j2

Corresponding Author
Sepi Wulandari

Institutions
1 Program Studi Tadris Matematika, Institut Agama Islam Negeri Bengkulu, Jl. Raden Fatah Pagar Dewa, Telp. (0736) 51276 Kota Bengkulu 38211, Indonesia
2 Departemen Tadris Matematika, Institut Agama Islam Negeri Bengkulu, Jl. Raden Fatah Pagar Dewa, Telp. (0736) 51276 Kota Bengkulu 38211, Indonesia
*Sepiwulandari122[at]gmail.com

Abstract
Abstract. This research is to develop a mathematics learning tool for Student Worksheet (students worksheets) based on a scientific approach that is valid, effective, and practical. The research method used is the development research with the Plom Model consisting of 3 stages, namely the initial investigation phase (preliminary research), the development phase or making a prototype (development or prototyping phase), and the assessment phase (assessment phase). The subjects of this study were students of class VII SMP 10 Bengkulu city consisting of 32 students. Data collection techniques in the preliminary stage are document analysis, while the formative evaluation stage is walk through, observation, and students worksheets tests. The results of this study are in the form of products, namely: Student Worksheet (students worksheets). The results showed that the students worksheets in the valid category based on the score obtained 3.50 was stated to meet the criteria, for practicality tests a score of 3.55 met the criteria stated practical, whereas for the effectiveness test a score of 83 had met the completeness criteria, so it can be said that the learning kit students worksheets mathematics based on a scientific approach to class VII material can already be used.

Keywords
Scientific Approach, Students Worksheet, Research and Develomment

Topic
Mathematics Education

Link: https://ifory.id/abstract/DeKZrAqy7dxN