bluuebunny/crossref_metadata_2025_split huggingface dataset:
How good pre-service mathematics teacher in reading mathematical proof?
Authors: Noto M S , Priatna N , Dahlan J A , Setiyani S 
Published: November 2019

Abstract
Mathematics learning at the college has demanded pre-services mathematics teacher to have high-level mathematical skills including mathematical proofs. Several studies have focused on improving these abilities, but very few focus on the ability to read mathematical proofs. Though this ability that is needed by students in learning mathematical proofs. The purpose of this study is to analyse the ability to read mathematical proofs of students. This research is qualitative research, data obtained through interview and test. There were two problems in geometry given to three students with different abilities. The results show that two of the three students have good the ability to reading the mathematical proof and one student has the ability to reading proof that is lacking. Even though the three students have high mathematical initial knowledge. It can be concluded that students have good the ability to reading proof.
The different way of understanding and way of thinking between gender on the problem the linear equations of two variables
Authors: Bakar M T , Suryadi D , Darhim D 
Published: November 2019

Abstract
This article discusses about way of understanding and way of thinking college students between gender in solve math problems. A way of understanding is a cognitive product of a mental act perform by someone, and way of thinking is a cognitive characteristic of a mental act. The mental act is obtained by observing their statements and actions. Open interviews conducted by researchers after watching the learning video and check the college student works. This research uses phenomenographic approach. Rusdi and Ira are prospective elementary teachers who have equal ability of between gender in solving four problems related to the linear equation of two variables. The results of this study revealed that female college students tend to relate previous concepts to problems on the subject, solution representation more than one way, and way of thinking appear are to use empirical solutions and tend to follow frequently used patterns. While the male college students answered practically, that is using the clue of the question to obtain a solution, and way of thinking appear are to as non refential symbolic. This implies that way of understanding college students depends on heavily on the characteristics of their way of thinking.
Reflective Abstraction in Matematics Learning
Authors: Wafiqoh R , Kusumah Y S 
Published: November 2019

Abstract
The aim of this research was on how the students’ reflective abstraction worked in mathematics learning. This research was qualitative research with case study research design. In Mathematics learning, before the concept of learning material is related to another concept of learning material, the students are expected to have good Reflective Abstraction capability. In Mathematics learning, if a student has good Reflective Abstraction capability, the student will not find difficulty in Mathematics learning which are the difficulty in comprehending the material learned, the difficulty in comprehending and doing tasks given by the teachers, and the difficulty in learning other Mathematics learning materials. The result of this study were, on the process of Mathematics learning, students’ reflective abstraction was needed especially when the students had to solve mathematics problems. The students’ reflective abstraction level might be different between one and another depending on the level of problems and the concept comprehension that the students had.
Learning obstacles on the concept of function: a hermeneutic phenomenological study
Authors: Septyawan S R , Suryadi D , Nurjanah  
Published: November 2019

Abstract
The meaning of a mathematical concept especially function, which formed by students, is subjective in nature and has its own interpretation. Therefore, this reality is important to examine further. This study aims to explore the learning obstacles on the concept of function based on the students’ meaning of the concept and how students acquire as well as construct the meaning related to their experiences. This is a qualitative study with uses a hermeneutic phenomenological approach involving 65 10th grade students who have learned about function. The data collected through a test and interview. The interviews were transcribed and then conducted in-depth analysis to identify the learning obstacles possibility. The results of this study showed that the concept of function is meant actually as a correspondence between two elements; there is the meaning of function inconsistency; and the meaning of function that tends to be partial. On the other hand, there is a tendency that students acquired and constructed the concept of function are limited on what they’ve learned during the classroom. Based on the results of this study, it can be concluded that in general there are learning obstacles on the concept of function includes epistemological, ontogenic, and didactical obstacles.
Students’ mathematical thinking and their learning style
Authors: Delima N , Rahmah M A , Noto M S 
Published: November 2019

Abstract
The purpose of this study is to describe the students’ mathematical thinking based on their own learning style. The second objective of this research is to find out which one of the learning styles which has the highest mean score of the students’ mathematical thinking. In addition, this study also aims to find out whether there is a relationship between the students’ mathematical thinking with the learning style they have. Based on the result of research, the students’ mathematical thinking mostly in the medium and high category. Meanwhile, the dimension of learning style possessed by the majority of students is an assimilating learning style. Students with moderate and high students’ mathematical thinking categories, have an assimilating learning style. The mean score of the highest students’ mathematical thinking test is obtained by group of students with converging learning style. Although there is a difference in the statistical description, but the relationship between students’ mathematical thinking with their own learning styles is not significant. Nevertheless, the knowledge of the description of these two variables can serve as a good enough reference for determining the students’ self-development direction in the future.
Reflective Inquiry: Why Area is Never Negative?
Authors: Hanifat A F , Suryadi D , Sumiaty E 
Published: November 2019

Abstract
Reflective Thinking is an important process for an educator to be more professional. Educator can have reflective thinking with doing reflective inquiry. The reflective inquiry has a doctrine, that we not receive immediately something into information, but it’s requires examined and proven to be accepted as information. Information that examine in this inquiry is statement about area is never negative. A deep inquiry to prove that area is never negative lead to a re-reconstruction of the belief system within self, thereby generating new perspective and providing alternative solution to answer why area is never negative? Although it’s not clearly defined that area is never negative, why people accept it as a common sense? What underlies that area is never negative, even teacher itself don’t know the reason? Doesn’t teaching without understanding is consider as irresponsible action to student? Worried with this condition researcher try to figure it out and prove area is never negative with relation between measure, metric, dimension, length, and area in real set. Measure is foundation in this relation, with measure defined non-negative, causes metric and dimension defined with non-negative value. Resulting length as measure in dimension one is non-negative and proved that area is never negative.
The challenge of implementing STEM for senior high school students in the city border of Jambi
Authors: Syarkowi A , Hendri M 
Published: November 2019

Abstract
The purpose of this study was to describe challenges of implementation of STEM learning for senior high students in the border of the city in Jambi. Case study research design was used for this research. The STEM project which used was a simple telescope. A teacher and 35 students were observed along the learning process and then 5 students who have the problem in learning and the teacher were interviewed after stem learning done. This study finds if to implement STEM learning in this typical area was quite challenging. The main problem was how to manage a class with low motivation for learning. The other challenge was to find ingredients and component for the project. However, implement STEM for teaching and learning in this area was very possible
Facilitating of fourth grade student’s problem solving skills on friction
Authors: Gumala Y , Suhandi A , Syaodih E , Maftuh B , Ningsih A R , Afiffah R N , Qonita  , Handayani H , Hermita N , Samsudin A 
Published: November 2019

Abstract
This research purposes to designate students’ problem-solving skills on friction concerning elementary level through experiential learning. The indicators of problem-solving skills applied in this research were the indicators convinced to the problem-solving skills on force and impulse. A descriptive-qualitative design has already been contented to collect data from fourth-grade elementary students in one of school in Bandung Barat Regency (37 participants: 9-10 years old). The instrument which is developed formed essay with the interview process. The result appearances that every single characteristic of problem-solving skills has been developed and described such as identification, arguments hypothesis, reasoning and alternate solution. To summarize, the experiential learning is able to designate the 4th-grade elementary students’ problem-solving skills on friction.
Effectiveness problem-based learning (PBL) with reading infusion strategic to improving scientific literacy for high school students on topic global warming
Authors: Nasution I B , Liliawati W , Hasanah L 
Published: November 2019

Abstract
The scientific literacy is an important skill to be provided to students as effort of preparing citizens who are able to compete in the 21st century. The scientific literacy has become the main goal of physics learning. However, PISA results show that the scientific literacy of Indonesian’ student is lower compared to other countries. The aims of this study is to comparing effectiveness PBL with reading infusion and only PBL to improving students’ literacy. The design research of this study was quasi experiment method with pretest-posttest non-equivalent control group design. The subjects of this research consisted of 44 students of XI MIA at a High school in Bandung. The students were divided into 2 groups. The data collection was conducted through scientific literacy instrument that was developed before this study. The data was analyzed using n-gain, T-test and effect size. Results shows that the scientific literacy in experiment group is higher than control group significantly and the implementation PBL with reading infusion strategy has large effect to improving students’ scientific literacy. The results clarify that PBL with reading infusion strategy in physics learning is effective to improving scientific literacy students at high school.
Use of geoel ectric practicum module for physics education students
Authors: Agustina R D , Chusni M M , Malik A , Dirgantara Y , Samsudin A 
Published: November 2019

Abstract
The purpose this research development geoelectric module in supporting material of Earth and Space Science lecture. Method this research used Research and Development. The design research that includes analysis, design, development, implementation, and evaluation. The subject of this study where student of physics education on Program Studi Pendidikan Fisika, UIN Sunan Gunung Djati. Feasibility of geoelectric module on expert search result and field practitioner. The result show that the geoelectric module meet the standard of the feasibility aspect of the teaching concept.
The characteristics of development teachers’ pedagogy competencies of electromagnetics test
Authors: Hakim L , Sinaga P , Setiawan A 
Published: November 2019

Abstract
The aim of this research was to evaluate the faces of the pedagogy competencies test and quantity mistakes rendering to classical test theory and item response theory. The test was constructed on the fundamental concepts and essential content of the electromagnetics, with an orientation to the pedagogy competencies physics teacher. The pedagogy competencies designate is the competencies integrated into teaching and learning electromagnetic. The research method is a mixed-method with embedded experimental models. The analysis was based on 40 answers of pre-service who have taken training teaching in school (PPL) courses at the Physics Education Department. Based on classical test theory indicates that 15 test items were analyzed, 12 items were good quality with reliability index is 0.72. As of information function and standard error measurement of item response theory, the conclusion of this evaluation is that the model 3PL is better to use when evaluating the test.
Apply model of teaching levels of inquiry for identifying experimental skills on solar system matter in the middle school
Authors: Nurjanah A , Utari S , Ramalis T R , Rusdiana D 
Published: November 2019

Abstract
Apply model of teaching Levels of Inquiry in middle school level can identify experiment skills use the similarity from every stage in Levels of Inquiry process according to ten aspect of experimental skills that is adopted from Brotosiswojo and Richard J. Rezba. There are observation, making prediction, knowing variable, formulating hypotheses, operating variable, designing experimental procedure, collecting data, analyzing data, and making conclusion. This research is applied in the one of the middle school in Lembang, West Java with solar system as the matter. The research design used one group pretest-posttest design to 30 seventh-grade students. The learning process used semi-experimental phenomena because solar system matter in the middle school does not deliver much mathematic analyze. Collecting data from three meetings with different sub matter (time zone, moon phase, and solar eclipse). Supported instrument is student worksheet assessed using Lati criteria (very poor, poor, fair, good, and excellent). Identifying experiment skills can use its model and it can enhance from first to third meeting with the result is poor, fair, and good.
University student’s self-reflection ability on thermal insulation concept
Authors: Nurjannah N , Setiawan A , Rusdiana D , Muslim M 
Published: November 2019

Abstract
We have already probed students’ self-reflection ability on thermal insulation concept. Self-reflection is needed to investigated because it influences the development of students’ conceptual understanding. The thermal insulation problem has been given to 20 preservice physics students who have been enrolled in the Introductory Physics I. Qualitative way has chosen to analyze the test. The data analysis has mainly fixated on students’ self-reflection on thermal insulation problem. Stand on data analysis, it can be decided that students’ self-reflection ability on thermal insulation concept is still poor category.
Case study: investigating of eleventh graders’ translating among modes of representation ability on linear motion
Authors: Rahmadewi B , Setiawan A , Siahaan P 
Published: November 2019

Abstract
The purpose of this study is to describe the profile of students’ translating among modes of representation ability on physics. The ability to represent information into verbal, graphical, picture, table and mathematical representations in order to help students define suited physics’ concepts on solving physics problems. Participants included 28 11st grade students in a senior high school in Bandung. The sampling technique is random sampling. This study used description method to describe the profile of students’ translating among modes of representation ability. The findings showed that students’ translating among modes of representation ability were classified in medium category with 54.44% of mastery. The highest average score on students’ ability to represent picture representations into mathematical format was 69.60% from its ideal maximum score. Whilst students’ ability to represent pictorial format into graphical reached 25%. It can be concluded that students’ translating among modes of representation ability is insufficient category.
The analysis of tenth grade LMM on work and energy
Authors: Putri N , Samsudin A , Nugraha M G , Fratiwi N J 
Published: November 2019

Abstract
The purpose of this research was to intimidated LMM (Learners’ Mental Model) of work and energy. The mental model can be used to considered more extremely apparatus of misconceptions. The research method is a case study with descriptive quantitative analysis. The samples are 30 tenth grade students (14 boys and 16 girls, their ages were middling 16 years-old) at one of senior high school in Bandung. The research sample used cluster random sampling technique or random class. LMM was analysis through two-tier test in the form of open-ended questions as many as 5 questions. The data investigation was approved purchasable in two stages. In the first stage the analysis learners level of understanding and in the second stage the analysis learners model of understanding. The result illustrations that mental models have been identified in the three categories, that are, 1) Scientific 26,7%, 2) Synthetic 16%, 3) Initial 57,3%. In conclusion, mental model of the initial category is higher than other categories.
Improving students’ conceptual knowledge on optical device materials with computer simulations
Authors: Rahmadani S , Samsudin A , Danawan A , Kaniawati I , Suhendi E 
Published: November 2019

Abstract
One of the factors causing the low level of student’s conceptual knowledge on optical device materials is the difficulty of students to observe the shadow formation process so that one can see an object. Students difficult to understanding the function and way of working the parts of the eye. Therefore, it is necessary to develop computer-based instructional learning media on optical device materials. The development of learning media using development method with the sample of research as many as 23 high school students. The instruments utilized to determine the increase of students’ conceptual knowledge were pre-test and post-test in the form of FTOPT (Four-Tier Optic and Photonics Test). After using Optics Simulation (OpSi) in physics learning, student’s conceptual knowled2,5ge of optical device material has increased as indicated by the normalized gain <g> = 50,93% with the medium category.
Effectiveness of the use of developed teacher’s book in guiding the implementation of physics teaching that provides science literacy and instill spiritual attitudes
Authors: Suhandi A , Samsudin A 
Published: November 2019

Abstract
Research and development to produce Physics teacher’s book products to guide the planning and implementation of Physics teaching that can provide scientific literacy and instill students’ spiritual attitudes has been carried out. Usage test of the developed teacher’s books have been carried out in one of the high schools in West Java. Subject in this study is one of physics teacher and 40 students. The focus of the research is to get an overview of the effectiveness of the use of the developed physics teacher’s books in guiding teachers to carry out physics learning that can improve the science literacy and spiritual attitudes of students. The instrument used in this study are the science literacy test and the spiritual attitude scale respectively. The effectiveness of the teacher’s book in guiding the teacher to carry out physics teaching is determined based on the number of students who achieve a high increase in science literacy and spiritual attitudes. The results of the study show that the use of the developed teacher’s books has high effectiveness in guiding teachers to carry out physics learning that can improve science literacy and moderate effectiveness in instill a spiritual attitude.
K-12 students’ misconception ability on global warming: a case study
Authors: Satriadi S , Liliawati W , Hasanah L , Samsudin A 
Published: November 2019

Abstract
A case study is a research design to identify misconception about high school students on global warming. Diagnosing misconception process is important factor to help teachers overcome their learning problems. The participants are 100 students with 43 males and 57 females of the third grade students of senior high schools in Bandung. The data has been collected by distributing diagnostic test items in the form of three tier test. The study indicates that there are several misconceptions related to global warming such as (1) Global warming is caused by ozone layer depletion, (2) The greenhouse effect is not a natural but man-made phenomenon, (3) Carbon dioxide (CO2) which has been erode the ozone layer in the stratosphere, (4) Greenhouse gases increase due to the depletion of the ozone layer, and (5) The ozone layer is the layer involved in the process of the greenhouse effect. In conclusion, the results of this study established that the diagnostic test is able to analyse the students’ misconceptions as well as categorize the level of students understanding toward the global warming; understand the concepts, misconceptions, or don’t understand concepts.
Identification of the causes of misconception on the concept of dynamic electricity
Authors: Halim A , Lestari D , Mustafa  
Published: November 2019

Abstract
This study aims to find out the causes of misconceptions on the high school students in the subject matter of dynamic circuit through mixed method. The population of this study is all students of class XII SMAN 2 Banda Aceh. The sample was chosen by random sampling, so that there were 21 students for the control class and 21 students for the experimental class. Data collection was done by questionnaire technique in the form of questionnaire about the cause of misconceptions which is called the Instrument for Identifying the Causes of Misconceptions (IICM) consisted of 35 items was developed by researchers with validity and reliability indices respectively 0.75 and 0.85. The results of data analysis show that the largest percentage of causes of misconception is by students and by context. Thus it can be concluded that the cause of misconception among high school students for dynamic electrical circuitry is caused by the student’s self as well as the context. The causes of misconceptions in students are more at the stage of cognitive development of students and in most contexts caused by feelings of pleasure/displeasure or free/depressed.
Eleventh grade students’ conception analysis: a case-study on heat transfer
Authors: Syamsiah E N , Maknun J , Syamsudin A , Muslim M , Hasanah L , Suhandi A 
Published: November 2019

Abstract
We have precisely conducted research to identify students’ conceptions on heat transfer. A case study has been implemented by using purposive sampling technique. The research participants are 11 males and 24 females of eleventh grade students. The largest percentage of students’ conception is in the category of misconception, such as: (1) heat transfer is taking place while system has reached thermal equilibrium, so temperature difference still exists; (2) Objects that absorb heat more quickly, will emit heat radiation more slowly; (3) In conduction, heat flows because it is carried by moving electron of a medium; (4) In convection, the rate of convection goes faster as the water boils.