Indonesia Conference Directory

Corresponding Author
RIZKIA ARAFAHANISA

Institutions
Univerrsitas Pendidikan Indonesia

Abstract
This study aims to determine and describe students mathematical problem solving abilities in geometry material, namely to build a flat side space. Based on the results of the TIMSS and PISA studies and literature studies indicate that there are still many students who have difficulty in the cognitive process to understand problems and solve problems in word problems. This fact raises this research which aims to investigate the ability to solve problems and difficulties carried out by students in solving material problems in building flat side spaces. This research is qualitative research, involving 26 one of the junior high schools in Bandung which was selected using random sampling techniques. Analysis of the ability to solve problems in this study is based on Polyas steps, namely understanding the problem, devising the plan, implementing the plan and looking back. Data collection techniques used in this study were written tests and interviews. Data were analyzed descriptively. The results of this study indicate that there is a relationship between students problem solving abilities with reflective and impulsive cognitive styles. The results of this study indicate that Impulsive students tend not to go through the stages of planning completion, error calculations, and reluctant to re-examine the solutions that have been found. Unlike the case with Reflective students.

Keywords
problem solving, cognitive style, Geometry

Topic
Science Education

Link: https://ifory.id/abstract/u4VXnhp93wcm

Corresponding Author
Sela Wahyuni

Institutions
a)Program Studi Pendidikan Matematika,Sekolah Pascasarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
*selawahyuni[at]upi.edu
b)Departemen Pendidikan Matematika, FPMIPA, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

Abstract
One of the 21st century skills and also the main goal of students learning mathematics is mathematical problem solving. To achieve one of the 21st century skills, students can practice solving problems in various forms of questions, including the story problem. Completing the story problem requires understanding of the problem context, making a mathematical model, developing a resolution strategy and reviewing the strategies used. The purpose of this research is to analyze the students ability to solve mathematical story questions about sine rules material. This research was conducted by quantitative and qualitative analysis. Data were collected from 34 students of tenth grade senior of high school. Problem solving for each student was scored by using a holistic rubric, then solution was reviewed by using the Polya Problem Solving Strategy. The results showed at least students had been written the solution but the methods that they used could not be understood (problem number1) and indicates that were weak in understanding and planning problem solving. Then there was only 4 students who were able to solve the problem solving correctly (problem number 2), thus students had been able to implement the four steps of Polya-s problem solving strategy properly.

Keywords
Mathematical problem solving; Story problems, Sine rules material

Topic
Mathematics Education

Link: https://ifory.id/abstract/TR2Hfu4AFPLw

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
Abhisatya Amrih Raharja

Institutions
Departemen Pendidikan Kimia, Universitas Pendidikan Indonesia, Jl. Dr. Setia Budhi No. 229, Bandung 40154, Indonesia

Abstract
This paper is aimed to describe the environmental attitude for high school students on the topic of buffer solution. The environmental attitude is one of the attitudes in the 18 values of the Indonesia National Character Education which is still very less applied in schools even though it is urgently needed for the environment sustainability. Buffer solution is one of the topic in chemistry that rarely linked with the environment even though actually it has a very large influence in the environment. Therefore, this paper is to describe how the environmental attitude that students have on the topic of buffer solution. The participants of this study were 68 students. In this paper qualitative methods were used by giving questionnaires to students. From the results obtained, most of the students still lacked a good environmental attitude on the topic of buffer solution, even though the students actually wanted to explore ways to maintain the environment.

Keywords
Environmental attitude; Buffer solution

Topic
Chemistry Education

Link: https://ifory.id/abstract/NbdvHh46QerT

Corresponding Author
Ririn Widiyasari

Institutions
Universitas Pendidikan Indonesia

Abstract
The purpose of this research is to determine student-s mathematical problem solving abilities reviewed based on adversity quotient in the materials linier programing. This research uses qualitative approach with descriptive research type. Sources of data used in this research is a sixth semester students of Mathematics Education FIP UMJ. Technique of collecting data through written test and interview. Based on the result of the research, it can be concluded that First, Students with AQ quitters in solving problems are able to transform mathematical problems by writing what is known and what is asked and explaining problems with their own language, able to answer mathematical problems, able to interpret answers to mathematical problems, and able to verify answers. Second, AQ campers students in solving problems are able to transform mathematical problems, able to answer mathematical problems, able to interpret answers to mathematical problems, but are still unable to verify answers. Third, AQ climbers students in solving problems are able to transform mathematical problems, able to answer mathematical problems, but are still unable to interpret the answers to mathematical problems, and unable to verify answers mathematical problems.

Keywords
Mathematical Problem Solving Ability, Linier Programing, Adversity Quotient (AQ)

Topic
Mathematics Education

Link: https://ifory.id/abstract/ryNMbWKYD9Af

Corresponding Author
Masjudin Masjudin

Institutions
IKIP Mataram
Jalan Pemuda No. 59A Mataram, 83125, Indonesia

Abstract
The purpose of this research is to describe the students statistical thinking ability in understanding statistical data. The statistical thinking consists of the following four indicators: (a) ability to describe data; (b) ability to organize and reduce data; (c) ability to represent data; and (d) ability to analyze and interpret data. This research is a descriptive research with a qualitative approach. The subjects in this research were eighth grade students of SMP Negeri 3 Lingsar. Data collection techniques by providing evaluation tests statistical thinking abilities and interviews. The results of this research showed that 4.2% of students had high statistical thinking ability, 25% of students had medium statistical ability, and 70.8% of students had low statistical thinking ability. So that, can be concluded the statistical thinking ability of students is in the low category. Student achievement in each indicator of statistical thinking ability is detailed as follows: (a) students ability to describe data is in the high category; (b) students ability to organize and reduce is in the high category; (c) students- ability to represent data is in the medium category; and (d) Students- ability to analyze and interpret data is in the low category.

Keywords
Statistical thinking ability; Statistical data

Topic
Mathematics Education

Link: https://ifory.id/abstract/rmdGC7cgqLnZ

Corresponding Author
Nadya Mahanani

Institutions
1Departemen Pendidikan Matematika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

Abstract
This study aimed to find out an overview of students algebraic thinking abilities viewed by auditory learning styles in one of the junior high schools in Bandung. This research is motivated by the results of studies that show varying ability (high, medium, and low) of junior high school algebra, so it is necessary to know the cause, and one of the causes is learning style. The subjects in this study were three students with auditory learning style. This research used a qualitative method. The data was collected using: learning style questionnaire, essay test, interview, and documentation. The results show that students who have auditory learning styles tend to answer with explanations in the form of sentences so that they can clarify what they mean or what they understand. Students who have auditory learning styles are able to fulfill indicators in algebraic thinking skills: conceptually based on computational strategies, manipulating numbers and symbols using algebraic rules, and expressing generalizations of patterns and rules in real-world contexts. Based on this research, the researcher suggested that the students can be facilitated with appropriate learning methods or models to contribute well to their algebraic thinking abilities.

Keywords
Algebraic Thinking Ability; Auditory Learning Style

Topic
Mathematics Education

Link: https://ifory.id/abstract/PLqWmAHEf3CJ

Corresponding Author
Mayun Erawati Nggaba

Institutions
Program Studi Pendidikan Matematika, Universitas Kristen Wira Wacana, Jl. R. Suprapto No. 35, Nusa Tenggara Timur, Indonesia

Abstract
To describe students critical thinking ability on trigonometric problems, a research was conducted on 30 students (15/16 years old) in West Java, Indonesia. This research is a qualitative descriptive research and data collection technique is written test with 3 description questions. The test results were analyzed using three indicators of critical thinking ability, (1) composing questions with reasons, (2) identifying relevant and irrelevant data of a mathematical problem, and (3) solving mathematical problems with reasons. The results showed that: (1) almost one-third of the number of students can compile the questions with the reasons, (2) more than one-third of students can identify the relevant and irrelevant data of a mathematical problem, and (3) more than one-third of students can solve the mathematical problems with reasons. The average percentage of students on trigonometric problems is 31,86%. Based on the result of research, it is seen that most students do not have good critical thinking ability on solving trigonometric problems.

Keywords
critical thinking ability, mathematical problems, trigonometry

Topic
Mathematics Education

Link: https://ifory.id/abstract/UJhTnzMGK7dW

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
Aulia Fitri Rachman

Institutions
a) Magister Pendidikan Matematika, Universitas Lampung, Jl. Prof. Dr. Sumantri Brojonegoro No. 1, Bandar Lampung 35141, Indonesia
*auliaf97[at]gmail.com
b) Departemen Pendidikan Matematika, FKIP, Universitas Lampung, Jl. Prof. Dr. Sumantri Brojonegoro No. 1, Bandar Lampung 35141, Indonesia
c) Departemen Matematika, FMIPA, Universitas Lampung, Jl. Prof. Dr. Sumantri Brojonegoro No. 1, Bandar Lampung 35141, Indonesia

Abstract
Mathematical communication skills have an important role in mathematics because it can help students to express their understanding. This study aims to analyze the students mathematical communication skills using Bruners theory in the system of three-variable linear equations material. The type of research is a qualitative descriptive research. The research was conducted at SMAN 4 Kotabumi with the subjects in this study are 129 students of X grade. The data collection technique used was a written test of mathematical communication skills. The results of this study indicate that students mathematical communication skills are still relatively low. Constraints found by researchers that led to students low mathematical communication skills are: (1) students have not been able to understand the problem and explanation correctly, (2) students have not been able to do the calculations correctly when associating with system variables equations; (3) students cannot conclude the results correctly.

Keywords
Students mathematical communication skills; Bruners theory

Topic
Mathematics Education

Link: https://ifory.id/abstract/TRpHJFC2LkdB

Corresponding Author
Noor Hidayati

Institutions
University of Sebelas Maret

Abstract
The purpose of this study is to describe students mathematical representation ability in solving geometry problems. The ability of mathematical representation of students in this study is a way or steps used by someone to present mathematical ideas or ideas into interpretations in the form of visual, symbolic, and verbal. The focus of this study is to analyze the ability of students mathematical representation based on operational forms which include visual representation, simvolic representation and verbal representation. The research method used is the qualitative research method. the research subjects were three students at the Bakti Junior High School in Madiun. The data in this study consisted of data resuction, data presentation, and conclusions or verification. The results of the study show that students in the aspect of visual representation are able to understand the image correctly. In the representation aspect students still often make mistakes in number counting operations. In the aspect of verbal representation students have not been able to write mathematical sentences.

Keywords
Geometry, representasi visual, representasi symbolic, representasi verbal

Topic
Mathematics Education

Link: https://ifory.id/abstract/fQkxCNG8WTw3

Corresponding Author
Hastri Rosiyanti

Institutions
a) Program Studi Pendidikan Matematika, Universitas Muhamamdiyah Jakarta, Jl. KH. Ahmad Dahlan, 15419 Jakarta Selatan, Indonesia
*hastrirosiyanti[at]gmail.com
b) Program Studi Matematika, Universitas Bina Nusantara, Jl. K H. Syahdan No. 9, Jakarta Barat 11480, Indonesia

Abstract
The purpose of this study was to analyse and describe refractive thinking skills in solving mathematical problems in terms of thinking styles.This study uses qualitative with descriptive research types.The research subjects is the fourth semester mathematics education students.The data collection technique used is written tests and interviews.The results of the study is the students who have the style of thinking Abstract Sequential can only see information contained in questions, but cannot analyse the information.Hence , the determination of solving problem strategy is very inappropriate.The results is solution of the problems was not exactly right.Students who have a style of thinking Concrete Sequential can analyse the information contained the question, but in determining the solving strategy is not appropriate, therefore the answer of the problem is not right.Students who have the style of thinking Random Abstract can collect the information with their own editorial.They only wrote their strategy generally but can not wrote down gradually.Hence, the planned strategy and solution not yet seen in detail.Students who have an Random Concrete style of thinking can gather the information contained in the problem, able to determine a problem solving strategy and the right solution.

Keywords
Refractive Thinking, Solving Mathematical problems, Thinking Styles

Topic
Mathematics Education

Link: https://ifory.id/abstract/XLgpu3aVCUtW

Corresponding Author
EUIS GUSANTI SRI RAHAYU

Institutions
a) Mathematics Education, School of Postgraduated Studies, Universitas Pendidikan Indonesia, Bandung, Indonesia.
* euisgusanti[at]upi.edu
b) Universitas Pendidikan Indonesia

Abstract
Abstract. The background of this research is the ability of students to solve the geometry problems in grade XII of vocational high school. Students are less able in solving problem, not using mathematical expression and are not persistent in expressing their argument. This research aims to know students ability in mathematical representation in solving geometry problems. This research used descriptive qualitative method. Data was collected by interview, documentation, and test. This research involved three students including three group : upper level students, middle level students, and lower level student. Data analysis techniques through data reduction, data presentation, and conclusions. Validity of data by using triangulation technique. The result showed that : (i) the average ability to solve geometry problems with visual representation is in medium category because it is able to draw the geometry to clarify the problem and solve the problem of geometry (ii) Mathematical representation expressions, in the upper level students is capable of making mathematical model but have not been able to solve the problem of geometry, while students with middle level and lower level have not been able to create mathematical models, (iii) The ability of word representation or written text of vocational high school students 14 Garut is still low because students have not written steps in solving geometry problems.

Keywords
mathematical representation, geometry, vocational high school

Topic
Mathematics Education

Link: https://ifory.id/abstract/JAhvuqn6EMVd

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
Putri Astuti

Institutions
a) Departemen Pendidikan Matematika, Sekolah Pascasarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung 40154, Indonesia

Abstract
Fractions is one of the essential topics in mathematics learning at school that is often considered difficult to understand by students. Students in Indonesia generally learn fractions in the part-whole comparisons construct. This study aims to describe students misunderstandings in comparing fractions in fraction constructs as part-whole comparisons through representations presented by students. This research is descriptive qualitative research and the data collection was collected by test, interview, and video documentation. The subjects of this study were seven elementary school students at the fifth grade, one of the schools in Bandung. The result of this study show that students who correctly answer the problem of comparing fractions and can represent the fractions that are given in fraction constructs as Part-Whole Comparisons evidently have a misunderstanding of comparing two fractions. The types of mistakes made by students are 1) Students compared the numerator of the two fractions given, 2) Students compared the denominator of the fractions given, and 3) Student did not divide the unit into equal-sized shares. Based on the result, we conclude that students understanding of the definition and representation of fractions as part-whole comparisons is still limited to memorization, not to the good meaning.

Keywords
students- misunderstandings; fractions; part-whole comparisons; representation

Topic
Mathematics Education

Link: https://ifory.id/abstract/PFKWD8xhefag

Corresponding Author
Nur Huda Sari

Institutions
a) Magister of Mathematics Education, Lampung University, Jl. Prof. Dr Sumantri Brojonegoro No. 1, Bandar Lampung 35141, Indonesia
*nurhudasari0594[at]gmail.com
b) Department of Mathematics Education, Lampung University, Jl. Prof. Dr Sumantri Brojonegoro No. 1, Bandar Lampung 35141, Indonesia
c) Department of Guidance and Counseling, Lampung University, Jl. Prof. Dr Sumantri Brojonegoro No. 1, Bandar Lampung 35141, Indonesia

Abstract
The purpose of this study is to analyze students problem solving ability by using polya steps in linear program material. This was a descriptive study that used a qualitative approach with 103 students of XI grade at SMA Negeri 1 Kota Bumi as the subject of the study. The data was collected through the technique of a written test, which consisted of two questions. The result of the research showed that the ability of problem solving in students of grade XI in SMA Negeri 1 Kota Bumi was good, which were 17 students or 16,50% was very good at problem solving, 53 students or 51,47% was good at problem solving, 28 students or 27,18% was quite good at problem solving, and 5 students or 4,58% was not so good at problem solving. Moreover, the result of each indicator of problem solving ability was the indicator of understanding the problem was 87,86%, the indicator of arranging the plan was 45,99%, the indicator of implementing the plan was 39,31%, and the indicator of rechecking was 34,91%.

Keywords
Problem Solving Ability; Polya Steps; Linear Program Material

Topic
Mathematics Education

Link: https://ifory.id/abstract/EbzZhLBk9PvR

Corresponding Author
Dwika Ananda Ayu Rahmawati Sinaga

Institutions
Department of Mathematics Education, Pascasarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

Abstract
Reflective thinking skill has an important role in solving mathematical problems. Reflective thinking skills can be applied in many topics in mathematics, including trigonometry. This study aims to analyse the students- reflective thinking skills used qualitative method. The steps of this studies are developing reflective thinking test and reflective thinking questionnaire, asking students to do the test and fill out questionnaire, and analysing the results of students- answer and students- questionnaire. The subjects of this study were six students at the eleventh grade (15-16 years old) senior high school in Pekanbaru, Riau Province. The analysis of the study showed from the stages of reflective thinking skills, there are reacting, comparing, and contemplating. The results of this study indicate that students- reflective thinking skills are high level, medium level, and low level. The analysis of this study can be used as material to make learning design to suporting students- reflective thinking skills.

Keywords
Reflective thinking skills

Topic
Mathematics Education

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

Corresponding Author
NURJANAH NURJANAH

Institutions
(1) Program Studi Pendidikan Matematika, Universitas Islam Nusantara, Jalan Soekarno-Hatta No 530, Bandung 40286, Indonesia.
(2) Program Studi Pendidikan Matematika, Universitas Pendidikan Indonesia. Jl. Dr. Setiabudi 229, Bandung 40154, Indonesia.

Abstract
This research aims to describe students- thinking process in solving the problem of negation of compound statement, especially conjunction and disjunction. By using descriptive explorative research students- thinking process was analyzed based on APOS theory. The subjects of this research are 9 students of freshman which in joining the Logic and Set Theory course in one of universities in Bandung. The data was collected by test, observation, and interview. Based on research findings, researchers conclude particularly in each of mental constructions phases of APOS, in: action, process, object, and scheme phases precisely. The action was formed almost perfectly on all students, except for a student in low category. Interiorization of action into a process does not occur only for a student in low category, while in other students it is perfect or imperfect. Thereafter, at the object phase, a student in high category performs the encapsulation and de-encapsulation processes perfectly, while there are two students in low category who can-t do the two processes and the other students do those processes with some mistakes. Finally, there are two students in low category and a student in medium category such that can-t organize action, process, and object to build scheme.

Keywords
thinking process, negation, APOS theory

Topic
Mathematics Education

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

Corresponding Author
Amalianneisha Rafadewi Andhanatami Putri

Institutions
(a) Department of Biology Education, School of Postgraduate, Indonesia University of Education
Jl. DR. Setiabudi No 229, Bandung, Indonesia
*amalianneisha[at]gmail.com
(b) Department of Biology Education, Indonesia University of Education
Jl. DR. Setiabudi No 229, Bandung, Indonesia

Abstract
Technological pedagogical content knowledge (TPACK) is defined as a competence in integrating knowledge of content, pedagogy, and technology into a learning practice that needs to be possessed by teachers to face the era of 21st century education. TPACK competence is inseparable from specific content that is going to be taught, in this case is classification of lving things, a distinctive content on biology learning. This study was aimed at analyzing TPACK competence of biology teachers in classification of living things learning. The study was set as a descriptive study and involved five biology teachers from senior high school level, grade X. The data about teachers- TPACK was gained from CoReS, and teachers- prespective on TPACK in classification of living things learning was gained from teachers- responses toward questionnaires. As the result, analysis of CoRes reveals that all (100%) of biology teachers- TPACK is on the pre TPACK category. The study eventually shows that biology teachers still face some difficulties in integrating content knowledge, pedagogy, and technology in teaching classification of living things that discusses numerical taxonomy to the students.

Keywords
TPACK, Classification of Living Things; Numerical Taxonomy; Biology teachers

Topic
Biology Education

Link: https://ifory.id/abstract/CfFa89yAb6pL

Corresponding Author
ROSIQOH ROSIQOH

Institutions
Program Studi Magister Pendidikan Fisika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

Abstract
The objective of this research was to describe the tenth year students- ability to understand concept and adversity quotient in material of elasticity in Senior High School. This is single case study research where the objective of research was to investigate the condition and situation happens, so that provide description based on fact found in the research field. The researcher apply a post test only group research design where the tenth year students of one of senior high schools in Bandung taken as the sample of the research. The data were analyzed by using Rasch Model technique. The instruments used to collect the data were test consisting of 15 items and questionnaires of adversity quotient and questionnaire of Adversity Response Profile (ARP). The research result showed that the students- ability of understanding concept in all aspect was still low. The percentage can be shown such as inference (48%), classifying (45%), interpreting (55%), comparing (38%), summarizing (44%), and explaining (44%). The adversity quotient showed that 4 students can be categorized climber type (students with high struggling rate), 25 students were camper type (students with medium struggling rate), and 3 students were quitter type (students with low struggling rate).

Keywords
Case Studies, Undestand Concept, Adversity Quotient

Topic
Physics Education

Link: https://ifory.id/abstract/7WG8UPRa2xzc

Corresponding Author
Wahyu Setiawan

Institutions
Program Studi Pendidikan Matematika
Institut Keguruan dan Ilmu Pendidikan Matematika Siliwangi
Jalan Terusan Jenderal Sudirman Cimahi 40526
*kakwahyu3[at]gmail.com

Abstract
This study aims to analyze students mistakes in solving algebraic questions and to find out the opinions of students about the interest in learning mathematics. The research approach taken is qualitative with descriptive method. The instruments used consisted of problem solving questions and interview guidelines. Tests carried out by students are given a score and an analysis of error answers is carried out. The study was conducted on class VIII students in one of the Public Middle Schools in West Bandung Regency. The tests carried out include several stages, namely the understanding stage, the transformation stage and the process skill stage. The results of the study show that most students have difficulty working on question number 3 with process skill indicators. After interviews, students said they did not understand the algebraic concept well and how to transform the problem into algebraic threads. So that it can be concluded that the error of class VIII students in one of the State Junior High Schools in West Bandung in solving algebraic form problems is in the lack of understanding the basic concepts of algebra. It is suggested that the learning process should use learning strategies that can improve students understanding of the basic concepts of matter. However, 61.38% of students have positive opinions on mathematics.

Keywords
Analysis of student errors, student opinions, problem solving

Topic
Mathematics Education

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

Corresponding Author
Wiwik Dwi Rahayu

Institutions
a) Mahasiswa Pascasarjana Pendidikan Fisika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi no. 229, Bandung 40154, Indonesia
b) Dosen Departemen Pendidikan Fisika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

Abstract
Abstract. Science literacy is one in HOTS (High Order Thinking Skills). Science literacy is one of the skills needed by students so that students have the ability to solve HOTS problems. One way to measure scientific literacy skills is to use scientific literacy instruments. Several studies have been carried out in the development of scientific literacy instruments, but there are still shortcomings in their development. Some researchers also provide advice on the development of subsequent scientific literacy instruments. There are several shortcomings in existing scientific literacy instruments, including those that have not raised aspects of inquiry, critical insight. In addition, the existing forms of scientific literacy instruments still need development. Then the item analysis method used still uses the classical data analysis method, but some have used analysis items using IRT (Item Response Theory). These shortcomings can be minimized by changing the form of scientific literacy instruments to be more interesting or can measure more than one ability. In addition, the item analysis method of using IRT is one of the recommended methods of data analysis compared to classical analysis methods.

Keywords
Scientifict Literacy Instruments

Topic
Physics Education

Link: https://ifory.id/abstract/v4MwEHjVbqDX

Corresponding Author
Elza Rachman panca priyanda

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

2,3 Departemen Pendidikan Kimia, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

* elzarachman95[at]upi.edu

Abstract
Abstract. This study aims to analyze senior high school students- View of Nature of Science and Technology. The participants include 25 senior high school students in one school in Bandung, Indonesia. The VNOST questionnaire consists of 8 multiple-choice items including four aspects: definitions of science and technology, epistemology of science, internal sociology of science, and external sociology of science. Students responses to the questionnaire were analyzed using frequency distribution to characterize trends in students views. The results showed that most of the students answers belonged to the Has Merit category, which was 46.5% but there were still few students who had a realistic view of 30% and 23.5% of the students answers still included the Naïve category. This study shows that generally senior high school students do not yet have an appropriate view of the nature of science and technology. This study is very important for teachers to see VNOST in science learning.

Keywords
senior high school students and View of Nature of Science and Technology

Topic
Chemistry Education

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

Corresponding Author
Martin Bernard

Institutions
a) Fakultas Ilmu Pendidikan, Institut Keguruan dan Ilmu Pendidikan Siliwangi, Jalan Terusan Jenderal Sudirman, Cimahi 40526, Indonesia
*sitiruqoyyah13[at]gmail.com
b) Fakultas Pendidikan Matematika dan Sains, Jalan Terusan Jenderal Sudirman, Cimahi 40526, Indonesia

Abstract
This research was motivated by the low mathematical problem-solving abilities and learning motivation of elementary school students. This study aims to examine the achievements and enhancements and associations of mathematical problem-solving abilities and learning motivation of elementary school students by implementing Discovery Learning assisted by Adobe Flash-based teaching aids. This research is a quasi-type experiment with the design of One Group Pretest-Posttest Design. The population in this study were all grade V elementary school students in Cimahi City, while the samples were determined using purposive sampling technique obtained samples namely SD Cibabat Mandiri 3 in class V. The instruments used consisted of tests of problem-solving skills and learning motivation. The results showed that (1) There were achievement and improvement in mathematical problem-solving abilities and learning motivation of elementary students by implementing Discovery Learning assisted by Adobe Flash-based teaching aids; (2) Students who get learning by implementing Discovery Learning assisted by Adobe Flash-based teaching aids to see elementary students mathematical problem-solving skills and learning motivation, are increasingly growing their positive attitude and enthusiasm for learning mathematics; (3) Students who get learning by implementing Discovery Learning assisted by Adobe Flash-based teaching aids are increasingly active in participating in learning, giving rise to high motivation and interest in learning.

Keywords
Adobe flash, Discovery Learning, Mathematical Problem Solving Ability, and Learning Motivation

Topic
Mathematics Education

Link: https://ifory.id/abstract/AacWF9eL28ux

Corresponding Author
Ria Yulia Gloria

Institutions
IAIN Syekh Nurjati Cirebon
UNNES Semarang
UNNES Semarang

Abstract
The high competition in the globalization era makes students often faced with various complicated problems. To be able to face increasingly challenging problems it is necessary to have habits of mind and strong understanding. Habits of mind and understanding can be formed and trained by applying formative assessments. The problem is not all the formative assessment strategies that students receive in lectures are in line as needed. In this research we will apply formative assessment through the stages of UbD, which aims to shape the habits of mind and understanding of the students. In contrast to other studies, this research used inverse design that is understanding by design in choosing the formative assessment strategy used. The method used is quantitative method with one-group pre-test post-test design. The purpose of this research is to know the improvement of habits of mind and understanding of the students. The result of the research shows that there is a significant increase both in students habits of mind and students understanding. The students habits of mind increases at medium category (N-gain = 43,9%), while students- understanding increases at medium category (N-gain = 45% ).

Keywords
Formative Assessment, Understanding by Design, Habits of Mind

Topic
Science Education

Link: https://ifory.id/abstract/hcNA9Lk6V2zC

Corresponding Author
Kartika Kartika

Institutions
*Departemen Pendidikan Biologi, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No.229, Bandung 40154, Indonesia
**Departemen Pendidikan Biologi, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No.229, Bandung 40154, Indonesia

Abstract
Abstract. This study aims to develop teaching materials based on the local wisdom of Indragiri Hilir District, Riau Province, namely "Menongkah Kerang" carried out by the Duano tribe. Teaching materials developed in mollusca material and will contain questions of classification abilities and use a simple determination key made by the author. The research methodology uses the Quasi Experiment method. The study design used quasi-experimental pre-test post-test two group design. Pretest is done before the lesson begins and the posttest is done after the teaching and learning activities. The study uses two classes, one control class only uses textbooks that are in school and one experimental class uses instructional materials that have been developed. The validation results from the three lecturers were very good and showed that the teaching material was valid and could be used. Based on the results of the pretest and posttest the students classification abilities increased, as evidenced by the posttest results of the average student increasing. In conclusion, this teaching material is very feasible to use in learning.

Keywords
Development of teaching materials, local wisdom, duano tribe, classification ability, mollusca

Topic
Biology Education

Link: https://ifory.id/abstract/PDgU72TGJ8Xb

Corresponding Author
Mia Audina Musyadad

Institutions
a) Mathematics Education, School of Postgraduated Studies, Universitas Pendidikan Indonesia
b) Mathematics Education Departement. Universitas Pendidikan Indonesia

Abstract
The purpose of this study was to show learning with REACT strategies was able to improve the mathematical communication skills of junior high school students. The method used in this study is the study of literature. Articles on communication skills and REACT strategies are collected and reviewed. Information obtained from the article is then compiled into a writing. The results of this study indicate that the REACT strategy can improve the mathematical communication skills of junior high school students.

Keywords
REACT Strategy, Communication Skills

Topic
Mathematics Education

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

Corresponding Author
Sariwulan Diana

Institutions
Departemen Pendidikan Biologi, Universitas Pendidikan Indonesia, Jl. Dr.Setiabudi No. 229, Bandung 40154, Indonesia

Abstract
The occurrence of plant blindness among students, then the plant literacy movement must be carried out intensively through learning in schools by applying phenetic. This study used a pre-experimental design pre-test and post-tests group. Pre-test about system thinking which is part of 21st century skills of critical thinking and problem solving regarding seed plants as aspects of 21st century plant literacy in high school students of class X MIPA in Bandung, conducted before phenetic learning. During learning, students are assigned to begin by identifying and selecting the characters of each taxon until reconstructing the phenogram. After phenetic learning, a post test was conducted. The results showed that there was an increase in 21st century plant literacy as much as 0.61 which included moderate categories and students could positively accept phenetic learning. Thus in addition to being a curriculum demand, phenetic also has the potential as a means to improve 21st century student plant literacy, but only a few aspects of system thinking can be developed. Further improvement is needed in phenetic learning, especially in selecting taxon and determining its characteristics.

Keywords
Phenetic, plant literacy, system thinking

Topic
Biology Education

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

Corresponding Author
Fitria Nurdianti

Institutions
1Program Studi Pendidikan IPA, Sekolah Pascasarjana Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
2Departemen Pendidikan Kimia, Universitas Pendidikan Indonesia, Jl. Dr.Setiabudi No. 229, Bandung 40154, Indonesia
3Departemen Pendidikan Fisika, Universitas Pendidikan Indonesia, Jl. Dr.Setiabudi No. 229, Bandung 40154, Indonesia

Abstract
The purpose of this study was to analysis of mastery of concepts and students argumentative abilities improved with argument-based science inquiry (ABSI) models. The method used was Descriptive Research. The instruments of data collection used in this study were observation, teachers structured questions, interview. This study was conducted in junior high schools plus An Naba Sukabumi with 25 seven-grade students. Based on the results of the analysis of teacher answers from structured questions, information was obtained that students argumentation skills were still low and one of the ways to improve student argumentation was experiment. One learning model that can be applied to improve students argumentation and mastery skills is argument-based science inquiry (ABSI). The application of ABSI in enhancing the argumentation skills is in the research stage.

Keywords
Argument- Based Science Inquiry (ABSI), Capability of Scientific Argumentation, Descriptive Research, Science Education

Topic
Science Education

Link: https://ifory.id/abstract/nebLdAjhH694

Corresponding Author
ROSMIATI R

Institutions
1Program Studi Pendidikan IPA, Sekolah Pascasarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setia Budhi No. 229, Bandung 40154, Indonesia
1Program Studi Pendidikan IPA, Sekolah Pascasarjana, Jl. Dr. Setia Budhi No. 229, Bandung 40154, Indonesia
3Departemen Meteorologi, Institut Teknologi Bandung, Jl.Ganesha No. 10, Bandung 40132, Indonesia
4Departemen Pendidikan Fisika, Universitas Pendidikan Indonesia, Jl. Dr. Setia Budhi No. 229, Bandung 40154, Indonesia
5Departemen Pendidikan Fisika, STKIP BIMA, Jl. Piere Tendean Kelurahan Mande, Kota Bima 84111, Indonesia

Abstract
The developing reflective thinking skills (RF) for pre-service teachers is very important. It made pre-service teachers try to integrate the ability to think reflective in the teaching process. The study aims to explore the ability of argumentation that has been constructed into the reflective thinking process. It purpose to enhance the reflective thinking capabilities of physics pre-service teachers- climate prediction material.The respondent of this research were three respondents. The data obtained in the form of arguments by determining claims, warrant and backing qualitatively. It analysed using descriptive explorative. Based on the results of data analysis, the pre-service teachers reflective thinking ability was seen from the results of the argumentation. We described three (3) different level for respondent reflective thinking capability in which the first respondent in resolution level, the second respondent in exploration level, and the third respondent in triggering event level. This means that the reconstruction of the reflective thinking process by including the arguments was very effective to explore the reflective thinking capabilities of pre-service teachers.

Keywords
Argumentation, Reflective Thinking Capabilities, Pre-service Teacher

Topic
Physics Education

Link: https://ifory.id/abstract/zbZCh4fJX6KM