bluuebunny/crossref_metadata_2025 huggingface dataset:
Development of two-tier multiple choice instrument to measure science process skill
Authors: Sholihah N A A , Sarwanto  , Aminah N S
Published: May 2020

The science process skills of students are inseparable from learning. To measure the science process skills of students required an instrument of assessment that is easy and appropriate. This study aims to measure the ability of science process skills of students in secondary schools, using two-tier multiple choice instruments. Indicators of the science process skills used are interpreting data, predicting, asking questions, formulating hypotheses, planning experiments, using tools and materials, applying concepts, and communicating. This two-tier multiple choice assessment instrument consists of two tiers, where first-tier is a matter of knowledge that indicates science process skills and second-tier is the reason for the answer in the first-tier. This assessment instrument consisted of 18 questions, and was given to grade XI of Madiun 4th high school. The results of this study indicate the science process skills of students in SMA 4 Madiun included in the medium category with an average value of 37.12%
The impact of the use of the internet on the learning outcomes in physics for high school student
Authors: Halim A , Wahyuni A , Malvina  , Yani E
Published: May 2020

Research in this area has been carried out a lot, but the research this time has its own uniqueness, where the use of IT in high school learning in Aceh province varies greatly. There are schools that prohibit students from accessing the internet on the grounds that they will have a negative impact on student behavior, but there are also schools that encourage students to use the internet as an additional source of reading. However, their learning outcomes have no significant difference. Based on some of these studies, it needs to be studied more deeply about the impact of internet usage on the learning outcomes of high school students, especially on Physics subjects. Research uses a quantitative approach, survey methods and data collection through documentation techniques and questionnaires. The target population of all high school students is in the city of Banda Aceh, but with a variety of considerations a sample of 31 students was taken randomly. Data processing is done by using product moment correlation test and the value is 0.2646 with a positive low category or there is no significant relationship between the use of the internet as a learning resource and student learning outcomes in physics subjects. Inference from the results of research, teachers are encouraged to motivate students to use IT in learning while still controlling their use.
The effectiveness of learning using social media to improve student’s communication skills in fluids’ topics
Authors: Fatimawati S , Mursalin  , Odja A H
Published: May 2020

This research aims at measuring the effectiveness of learning set using social media in improving students’ communication skills in the topic of fluids. This is experimental design research using One Group Pretest-Posttest, using a Project-based Learning model. This research is a part of Research and Development (R & D); the ADDIE learning set developed to consist of syllabus, lesson plan, materials, LKPD, test, and evaluation instruments. This research takes place in MTs. Negeri 1 Kota Gorontalo, using 25 students as the sample. The result of the data analysis shows that the average communication skill indicates a significant difference; the N-Gain is in high category of 0.72. Therefore, it can be concluded that the learning set using social media is effective to improve students’ communication skills in the topic of fluids.
Minimizing misconception on the topic of temperature and heat by edmodo learning media
Authors: Mursalin  , Odja A H
Published: May 2020

This design pre-test post-test control group experiment was aimed to improve student’s understanding of the concept and to minimize their misconceptions on the topic of Temperatur and Heat. The subjects of this research were selected ‘using cluster random sampling from High School students in Gorontalo. The instruments used to collect the data are multiple choice tests. The data were analysed using t-test and the students’ conception profile was carried out using Certainty of Response Index technique. The results of this research show the significant difference in the post-test average and normalized gain average between the experimental class (81.976 and 0.679) and control class (68.267 and 0.437) and t
count
= 12.575 greater than t
table
= 2.000 on the confidence level 0.05. These results of research are supported by the fact that misconceptions in the experimental class are smaller than those in the control class. The implementation of edmodo learning media is effective to improve student’s understanding of the concepts and minimize their misconceptions on the topic of Temperatur and Heat
Students’ difficulties in solving trigonometric equations and identities
Authors: Rohimah S M , Prabawanto S
Published: May 2020

This study aims to identify the types of difficulties experienced by high school students in solving equations and trigonometric identities. The method used in this research is descriptive qualitative research method to describe the facts of students’ difficulties in solving equations and trigonometric identities. The data collection technique in this study is by using respondents’ ability tests and interviews. Students involved in this study are 72 students of grade XI of senior high schools in the city of Bandung. Based on the results of data analysis, there are three aspects of students ‘difficulties in solving trigonometric equations and also there are three aspects of students’ difficulties in solving trigonometric identity problems. The difficulties of students in solving trigonometric equations, namely the difficulty of students in deciphering the form of the problem, difficulty in factoring in the form of trigonometric quadratic equations, and difficulties using the basic trigonometric equations. Whereas, the difficulties of students in solving trigonometric identity problems, namely the difficulty of students applying general trigonometry formulas, difficulty in describing each of the trigonometric comparison relationships, and difficulties in performing algebraic calculations.
Operation sense in algebra of junior high school students through an understanding of distributive law
Authors: Ardiansari L , Wahyudin
Published: May 2020

This paper reports an investigation of students’ understanding of distributive law used to facilitate students’ awareness of ‘the equations is an equivalent expression’ where each equation can be replaced by an equivalent equation. This study used a cross-sectional approach by distributing a questionnaire to participants as many as 53 junior high school students where 45% were male students and 55% were female students who were selected using purposive sampling techniques. The instrument used in this study was a questionnaire written in Indonesian that contains five statements about distributive law, one question that is “when is the statement true?” and three answer choices. The results showed that the use of students’ understanding of operations in understanding distributive law can be grouped into three levels, namely level 1 (pre-structural), level 2 (a combination of uni-structural and multi-structural) where level 2 is a transitional stage (ie stage pre-algebra) from level 1 to level 3 (a combination of relational and abstract expanded). Students who have been proficient in using distributive law in arithmetic, still have difficulty in applying it to algebraic manipulation. One of the causes of this difficulty is the lack of students’ understanding of the equal sign as a sign of equality. In addition, the absence of parentheses also seems to be a stumbling block for students in recognizing distributive law. The reason for expanding the notion of the equal sign by using distributive property is to provide a foundation for their operation sense construction so as to provide further meaning for equations in algebra and minimize student difficulties in learning school algebra.
Integrating ethnomathematics into augmented reality technology: exploration, design, and implementation in geometry learning
Authors: Sudirman S , Yaniawati R P , Melawaty M , Indrawan R
Published: May 2020

This study aims to integrate ethnomatematics into augmented reality technology in learning geometry. The research method used was ADDIE (Analysis, Design, Development, Implementation, and Evaluation) approach. The stages used in this study consisted of (1) exploration; (2) design, (3) development; and (4) implementation. This study used two data analysis techniques: (1) qualitative was conducted for exploration studies, describing the design and development process; (2) quantitative was conducted to investigate the result of the use of integrated ethnomathematics AR technology implementation to 56 Mathematics pre-service teachers’ at Indramayu, Indonesia. The results showed that (1) ethnomathematics values in the form of uma lengge traditional house, ethnic karo houses, wa rebo traditional house, demak grand mosque, kaghati kolape kite can be used as marker objects on augmented reality technology and to explain geometry concept;. (2) The design stages consist of designing integration concepts, AR interfaces, and learning system development;. (3) the results of implementation analysis can (a) help to increase learning interaction activities (b) improve the understanding of concepts and geometry visualization, (c) provide information to Mathematics pre-service teachers’related to ethnomathematics and local wisdom in Indonesia.
Introducing local wisdom by numbering and reading
Authors: Pratiwi I M , Ariawan V A N
Published: May 2020

Numeracy literacy deals with the application of mathematical concepts in daili life. In this study, the worksheets are desgned to present mathematical concepts in daily life by using story problem. Students are presumed to be able to solve story problem if they can understand the meaning of the problem. Thus, students can find problem that need to be solved in the right way. This study aims to investigate the correlation between mathematical understanding skill with reading comprehension skill of elementary school students. The study implemented the correlation method by involving fourth grades students in two elementary schools. Data collection techniques used technical tests, then the data was analyzed by pearson-correlation test. The result of the study shows that there is correlation between mathematical understanding and reading comprehension skill of elementary school students. The students are not only to understand mathematical concept and gain reading comprehension skill but also know about Indonesian local wisdom. This is due to the concept of story problems which integrated with local wisdom.
Contextual approach with scaffolding: an effort to improve student’s mathematical critical thinking
Authors: Sunaryo Y , Fatimah A T
Published: May 2020

This study aims to determine the improvement of student’s critical thinking abilities through a contextual approach with scaffolding. This study is a quasi-experiment in a senior high school in Ciamis, Indonesia. The sample is class XI taken by cluster random sampling technique to get the experimental class and the control class. The improvement of students’ mathematical critical thinking skills is obtained by doing pretest and posttest in the experimental class and the control class. The test used is a matter of mathematical critical thinking skills that were previously tested. The results showed that the comparison of the increase in student’s critical thinking abilities through a contextual approach was better than the students in the control class. The novelty of this research is the contextual approach that presents problems in the context of student life combined with scaffolding that adapts the zone of proximal development to students. These actions have an impact on improving the mathematical thinking ability of the majority of students in the high category.
Pupils Inter-dialogue in the Context of Problem Solving Polyhedron Geometry in Junior High School: Phenomenological Studies
Authors: Maulida A S , Dasari D , Suryadi D
Published: May 2020

The research aimed to describe pupils inter-dialogue during learning polyhedron. It based on learning obstacle. In didactical obstacles are found problems of conceptual interrelation, thinking continuity, and limitation experience of pupils in the polyhedron concept. So, the researchers designed a didactical design to minimize the learning obstacle by creating a more organizer and solve learning trajectory. The design implementation done on the pupils of grade VIII in Bandung during 3 continuous meetings. Inter-dialogue is expected to emerge when didactic design is designed so pupils dialogue with group friends to find solutions for solving problems. Dialogue that produces critical questions is commonly known as Socratic dialogue. The main idea in Socratic dialogue is the teacher’s task is not to give knowledge or provide information to pupils but the task of the teacher designing a learning situation where pupils will ask critical questions. The researcher using phenomenological studies to uncover pupils experience. By using Nonaka theory, the researcher found the pupils knowledge. The results showed the pupils intra-dialogue system in solving the polyhedron geometrical problem of phenomenological studies.
The role of agricultural contextual knowledge on the mathematical understanding of vocational students
Authors: Fatimah A T , Wahyudin W , Prabawanto S
Published: May 2020

This study aims to analyze the role of agricultural contextual knowledge on the mathematical understanding of vocational students. This study used a qualitative approach with a case study method. The participant were food crop and horticultural agribusiness specialization students of vocational school in Ciamis, Indonesia. Students solve the mathematical tasks in agricultural situations that are integrated with three-dimensional topics to explore contextual knowledge and mathematical understanding. The results obtained are: (1) students’ contextual knowledge of agriculture affects the understanding of the task context, and vice versa; (2) there are students who have agricultural contextual knowledge who tend not to be able to integrate it with mathematical concepts; (3) students who are able to solve the task have contextual knowledge, construct all information, and connections with mathematical concepts. These results indicate that contextual knowledge of agriculture can provide a role in mathematical understanding or not depends on the problem of the task and the ability of students in the coherence and correspondence of information, as well as mathematical connections.
Assessment problems of junior high school teachers in implementing 2013 Indonesian curriculum
Authors: Morin S , Prabawanto S , Herman T
Published: May 2020

This study aims to obtain an overview of teacher difficulties in carrying out mathematical learning assessments based on the 2013 curriculum. The method used in this study was qualitative descriptive. The research subjects were mathematics teachers in three schools in Bandung. The results of the study can be divided by 3 stages, namely planning stage, implementation stages, and making report stages. The first in stage, it is found that teachers’ problems include the lack of evaluation format and less preparation in making learning instruments. In the second stage, the teachers have difficulty in doing assessment because they do not understand whether the assessment formats made by them are in accordance with the 2013 curriculum. Teachers also have difficulty dealing with the time for conducting the entire assessment process. In the last stage, the teachers have difficulty in comprehending the meaning of the report results presented in some forms, like in the form of numbers, letters, and descriptions.
The analysis of reflective thinking ability in junior high school students
Authors: Rosmaya  , Noer SH
Published: May 2020

Mathematical reflective thinking ability are one of the determinants of students’ success in solving mathematical problems. This descriptive research aims to figure out students’ reflective thinking ability at the two-variable linear equations system material. The subjects of this research were Junior High School students who were selected using purposive sampling. This research involves 92 students of the eighth grade of some State Junior High Schools in Bandar Lampung. The schools were SMP Negeri 4 that has a high category with 34 students, SMP Negeri 8 that has a medium category with 28 students, and SMP Negeri 22 with low category which is 30 students. The Data was taken through reflective thinking ability test which consists of 4 essays that involved 3 indicators of reflective thinking, namely reacting, comparing, and contemplating. In order to obtain a comprehensive description related to the ability of reflective thinking in students of SMP Negeri in Bandar Lampung, the data was qualitatively and quantitatively analysed. The result of the research shows that students’ reflective thinking ability are still not optimal with the average score far below the reflective thinking ability, which is 51,59. It can be seen from the majority of students who still get difficulties in building a deep self-understand of problem, inability to deliver what has been understood in a certain reason, as well as inability in concluding a proper answer.
Improving students mathematical higher order thinking through the implementation of the creative problem-solving model of High School Students
Authors: Effendi A , Fatimah A T
Published: May 2020

This study aims to describe the increase in mathematical higher order thinking abilities of high school students through creative problem-solving learning models. This study was a quasi-experimental, with the design of the nonequivalentpretest-posttest control group in class X, the high school in Ciamis, Indonesia. The results of the study showed that there were differences in the comparison of the increase in students’ higher order thinking abilitiess through creative learning models of problem-solving and direct learning. Students who achieve a high increase category are more in the creative problem-solving class compared to the direct learning class. The advantages of creative problem-solving learning at the stage of expressing opinions. Students tend to express opinions openly so that many ideas emerge to choose effective strategies.
Analysis of junior high school students’ spatial ability based on Van Hiele’s level of geometrical thinking for the topic of triangle similarity
Authors: Lutfi M K , Jupri A
Published: May 2020

One of the mathematical topics that must be mastered by students is geometry. Geometry requires students to think analytically and spatially so they must have good spatial abilities. Each student has different spatial abilities in learning geometry. Several previous studies relating to spatial ability were about differences in students’ spatial abilities based on gender. However, almost no research could be found on the students’ spatial abilities based on level of geometrical thinking. This condition raises research questions about description of students’ spatial abilities based on Van Hiele’s level of geometrical thinking. Therefore, this study aims to identify students’ spatial abilities based on Van Hiele’s level of geometrical thinking. To answer the research question, we gave a written test to 25 grade IX students in one of junior high school in Bandung. Then, we conducted interviews to 3 upper group students and 3 lower group students. Data analysis was done by triangulation method. The results of this study indicated that there were variations in differences in each indicator of spatial ability based on the level of Van Hiele’s geometrical thinking. In the spatial perception, mental rotation, and spatial orientation, the maximum level achieved by students is level 2, namely 11, 5, and 3 students, respectively. Meanwhile the indicator of visualization and spatial relation, the maximum level achieved by students were level 1, namely 16 and 15 students, respectively.
Student’s Mistake in Algebraic Fraction: An Analysis Using AVAE Categories
Authors: Zulfa B I , Suryadi D , Fatimah S , Jupri A
Published: May 2020

The role of algebra in mathematics is important because it related to other materials such as geometry, calculus, basic matrices, trigonometry, statistics, vectors, and other mathematical studies. However, students’ mistakes in solving algebraic fractions are often found due to the fact that students’ are lacking in understanding the algebra and arithmetic. Therefore, in this research, researchers interested in analyse some students’ mistake by AVAE categories in the topic of algebraic fraction. The samples were 30 junior high school students. The data were collected by testing of simplifying algebraic fraction. The data were used to analyse the students’ error using AVAE (Arithmetic, variables, algebraic expression, and equal sign) categories and eight of them were interviewed. The results showed that students have difficulty in understanding arithmetic and algebraic expressions.
Contextual mathematical problem solving of deaf students based on the montague stages
Authors: Muhafidin I , Nurlaelah E , Hasanah A
Published: May 2020

This study aims to analyze the completion of contextual mathematics problems of deaf children based on Montague stages. this research was descriptive qualitative research. the data collection technique was in the form of tests, questionnaires, and interviews. The subject of this study was deaf class XI students in one of the Special Schools (SLB-B) in Kuningan, Indonesia. The results of this study were the students’ ability to solve contextual math problems from 2 students namely one student has the ability to solve contextual math questions in sufficient categories and one in the low category.
The relationship between mathematics resilience and mathematics communication skills
Authors: Rifdah  , Priatna N
Published: May 2020

In general, the purpose of this research is to find out wether there is relationship between students’ mathematical resilience and students’ mathematical communication skills. This research conducted to a private junior high school in Tangerang class VIII-I even semester in the 2018/2019 academic year. The method of this research is a survey method with the correlation technique. The sampling used the purposive sampling technique, which is determination and sampling technique determined by researchers with certain considerations. The sample consisted of 20 students. The material used in this research was the volume and surface area of the cube. The research instruments were 4 problems with communication mathematical skills and 30 statements of resilience statement. The conclusion of this research is that there is a positive correlation between mathematical resilience to communication mathematical skills; which is equal to 0.448.
The analysis of mathematics problem-solving skills and its relation with self-efficacy on the students of MTsN 2 Pemalang
Authors: Sayekti I , Waluya S B , Rochmad  , Johan A
Published: May 2020

The students need to give more attention to their problem-solving skills. Some of them still feel difficult to interpret in suitable ways. The purpose of this study was to identify the relation between mathematics problem-solving skills and self-efficacy in the Chapter Lines and Angles of the students of MTs N 2 Pemalang. The population of this research was the students of seventh grade in MTs N 2 Pemalang. By simple random sampling technique, class 7A was selected as the sample of the research. A mixed method was used, including quantitative and qualitative approach. The result of the research showed that (i) there was significant relation between self-efficacy and problem-solving skills in the score of the students (ii) the students with high self-efficacy answered the questions with detail and complete answers. The steps that the students did were correct and suitable with the problems. It showed that their problem-solving skills were excellent (iii) the students with low self-efficacy answered the question by not giving the detailed information. It showed that they still struggled with their problem-solving skills.
Mathematics anxiety of senior high school students based on extrovert and introvert personality types
Authors: Azizah S N , Suhendra
Published: May 2020

Mathematics is viewed by some students as a difficult subject, resulting them to be anxious when they are dealing with mathematics learning. Therefore, what and how mathematics anxiety have become an interesting issue to be studied. This study aims to describe mathematics anxiety profiles of senior high school students based on types of personality, which are extrovert and introvert. The study used qualitative method with triangulation strategy for collecting data in the forms of questionnaire regards extrovert and introvert personality types, MAS (Mathematics Anxiety Scale) questionnaire and interview. The subject of research were students from the 11th grade of one of high schools in Bandung. The result showed that: (1) extrovert students assume that mathematics is difficult so that they feel worried and are lack of enthusiasm when they are in the classroom, which the highest anxiety is when they are dealing with examination and assignment provided by their teacher, resulted that they feel scared, nervous, dizzy, and get stomach-ache; (2) introvert students assume mathematics as a complicated but interesting subject in the sense of they feel worried in classroom but they are calm and ease in facing examination but when they are appointed by teacher, they feel scared and not confidence.
Statistical literacy of undergraduate students in Indonesia: survey studies
Authors: Lukman  , Wahyudin
Published: May 2020

Nowadays, statistics based information is widely used by various institutions and social media, therefore statistical literacy as an essential knowledge has been recognized by various modern countries is something that must be owned by every citizen in recent information-based society. Students need statistical knowledge and skills so that they will be able to apply it in their studies and daily life. This study aims to assess the level of statistical literacy and variables that influence the improvement of undergraduate students’ literacy in Indonesia. The statistical literacy model used is the model proposed by Gal, which are the knowledge component consisting of five cognitive elements: literacy skills, statistical knowledge, mathematical knowledge, context knowledge, and critical questions and disposition components consisting of two elements: attitude critical; beliefs and attitudes. A survey was given to 114 of students, which are from both mathematics study program and mathematics education study program who either have studied basic statistics or have not. The results showed that the level of students’ statistical literacy for all components was sufficient, both for the component of good knowledge and the low disposition component. The average statistical literacy score of students who have studied basic statistics is higher than those who have not studied basic statistics. There are four factors that influence students’ statistical literacy, namely mathematical ability (logical and critical thinking), general knowledge, literacy skills (language), and statistical knowledge.
The level of mathematical resilience and mathematical problem-solving abilities of 11th grade sciences students in a senior high school
Authors: Harsela K , Asih E C M
Published: May 2020

This study aims to figure out the level of mathematical resilience and mathematical problem-solving abilities of 11th grade sciences students in a senior high school. The subjects of the study were 63 senior high school students in 11th grade sciences, second semester 2018/2019 year who were studied at one of the senior high school in Baleendah, Bandung regency. This research method is a survey, in which the survey is included in one type of research is non experimental. The study design used is cross-sectional designs. There are two sorts of instruments used for this study, namely test and non-test instruments. Test instruments serve for measuring the level of mathematical problem-solving abilities of students, while non-test instruments are in the form of questionnaires, useful for measuring the level of mathematical resilience of students. The results showed that (1) the level of students’ mathematical resilience is in the medium level, and (2) the level of students’ mathematical problem-solving ability is in the medium level.
How are the contributions of mathematics resilience for developing attitude rubric to assess mathematics learning?
Authors: Suri A , Herman T
Published: May 2020

Attitude assessment is one of important things that can help teacher to know how the development of students attitude in learning process. This study aims to present the implementation of attitude assessment by mathematics teacher at school. This study was qualitative descriptive research. The data were collected by using observation and conducting an interview to one of teachers of 8th grade in Cimahi. The result shows that the teacher was still difficult to implement attitude assesment. It caused the teacher had some obstacles in developing attitude rubric. In the end, students had negative attitude toward mathematics in classroom. To cope with this problem, the teacher needs to establish their own mathematical resilience so that they can have values, struggles, and growths that can help them in developing the attitude rubric. At the end of this article, it is also presented the contributions of mathematical resilience to develop rubric of attitude assessment in mathematics learning.
Mathematics remedial teaching under model of countenance stake for a senior high school in Bandung
Authors: Rini D E P , Prabawanto S
Published: May 2020

Remedial teaching plays an important role in the whole teaching program. Through remedial teaching, the teacher tries to provide students with the opportunity to create their mathematical abilities optimally. This study aims to describe the implementation of remedial teaching based on antecedents, transactions, and outcome components. Using the countenance stake model, the subjects in this study were a mathematics teacher who conducted the remedial teaching and students who taken the remedial teaching. The data were collected using interviews and documentation. The results of the study shows that the antecedents’ component of remedial teaching was not well-planned. Based on the transaction component, the remedial teaching was not well implemented. Based on the outcome component, the remedial teaching did not achieve good results.
An analysis of mathematical reflective thinking skills of senior high school students
Authors: Ramadhani R , Juandi D
Published: May 2020

The present study aims to describe mathematical reflective thinking skills of senior high school students according to the problems which examine mathematical reflective thinking skills of integrals subject matter. The method in this study was qualitative with phenomenological approach. Six students of grade XI in a senior high school in Banda Aceh City were selected as the subject. The data were collected through a test consisting of mathematical reflective thinking skills problems, interviews, and documentation. The indicators of mathematical reflective thinking skills include identifying problems, interpreting problems, evaluating problems, predicting problem-solving, and drawing conclusions. The results show that there are students who have not been able to identify problems clearly and correctly, all students have not been able to interpret the integral-related problems clearly and correctly, some students have not been able to evaluate the integral-related problems clearly and correctly, some students have not been able to predict the integral-related problems clearly and correctly, and some students have not been able to draw conclusions regarding the integral-related problems clearly and correctly.
Pre-service mathematics teachers creativity in designing mathematics assessment based on education for sustainable development
Authors: Widiati I , Turmudi  , Juandi D
Published: May 2020

Pre-service mathematics teachers often design mathematical test instruments based on the questions contained in the mathematics textbook. The question can be modified or directly using the existing problem. This certainly does not explore students’ creativity in designing mathematical test instruments, especially about applications in the social, economic and environmental aspects. This study aims to analyze the creativity of pre-service mathematics teachers in designing mathematical test instruments based on Education for Sustainable Development. This research was carried out qualitatively a type of phenomenology with 4 respondent’s namely Pre-service mathematics teachers. Based on the results of in-depth interviews and documentation of the mathematical test instrument was designs by Pre-service mathematics teachers, the results showed that pre-service mathematics teachers had gotten problems in designing application for the environmental field. Because of students are not used to designing application questions. For social and economic aspects, some students can design the problem but the problems given are limited to using examples in the social and economic aspect without incorporating elements of character values in them.
Mathematical communication ability analysis of high school students on trigonometry learning
Authors: Ekaludini U , Darhim D
Published: May 2020

Mathematical communication skills are one of the essential mathematical basic competencies of mathematics and mathematics education. The purpose of this study was to determine the mathematical communication skills of high school students in solving trigonometry problems and to reveal the difficult aspects of mathematical communication for high school students. The research design used was descriptive qualitative research involving 36 students of class X MIPA 1 as research subjects. The students were distributed into 3 groups, namely high, moderate, and low group which consisted of 12 students per group. The instrument used in this study was a test of mathematical communication skills in the form of a description. Based on the result, the average mathematical communication skills of students in all groups were in the less (inadequate) category. The results showed that students’ ability to solve trigonometry problems with mathematical communication had not been achieved. It was also found that students had difficulty on resolving mathematical problems presented in the form of images, on expressing the mathematical concepts used.
Hybrid-PjBL: Creative thinking skills and self-regulated learning of pre-service teachers
Authors: Zakiah N E , Fajriadi D
Published: May 2020

This study aims to describe creative thinking skills and self-regulated learning of pre-service teachers who participated in Hybrid-PjBL learning activities. The research design used a single-case study (one-shot case study). This study used quantitative descriptive with data in the form of a creative thinking scale, creative thinking ability tests, and self-regulated learning questionnaires. Data analysis used descriptive statistics. The results showed that the application of Hybrid-PjBL to students’ creativity had a very high category; students’ creative thinking abilities had a high category, with the construct of students’ creative thinking abilities comes from innovative factors; and self-regulated learning students had a positive attitude. This indicates that the Hybrid-PjBL learning model can develop students’ creative thinking skills and self-regulated learning with satisfactory results. This study contributes to the study of literature as an alternative learning model relevant to the demands of the twenty-first-century scheme.
Promoting junior high school students’ active learning using concrete object demonstration in line and angle topic
Authors: Khomeni A , Prabawanto S
Published: May 2020

This research aims to implement students’ active learning through the demonstration method of concrete objects in the line and angle topics in Junior High School. This was a Class Action Research implemented to 40 students at 7th grade of MTsN Batang Toru. The data collection techniques were carried out by observation and distribution of a questionnaire. The data analysis technique used the analysis of Miles and Huberman models with three stages, namely data reduction, data display, and drawing conclusions. This research used three cycles to obtain the desired results. The results of the observation during the learning process showed the observations of the first cycle in the first meeting, student activity was 34.82%, and that in the second meeting was 42.33%. Furthermore, the students’ activeness in the second cycle of the first meeting was 51.5%, and that in the second meeting was 63.83%. The third cycle of the first meeting was 74.16%, at the second meeting was 85.16%. A questionnaire indicated that students’ activeness during the first, second and third cycles were 44.16%, 64.16% and 84.33%, respectively. It can be concluded that the activeness of students in the line and angle topics in mathematics lessons using the concrete object demonstration method had increased as expected.
On surveying of fifth grade mathematical anxiety in term of gender
Authors: Afrianti N F , Prabawanto S
Published: May 2020

In the education curriculum, mathematics is a compulsory subject that students must learn from elementary school, because of its usefulness for students’ daily lives. However, many obstacles experienced by students in learning mathematics, one of which is mathematical anxiety. So, this study aims to explain how students’ mathematical anxiety is seen from gender factors and their implications. The subjects of this study were 10 grade 5 students, an elementary school in Sumedang. Case study methods are used to understand and analyse students’ mathematical anxiety. The results of the study were obtained from data collected through questionnaires, interviews, and fieldnotes when the mathematics learning process took place, which was then analysed descriptively. During the study, it was observed that the mathematical anxiety of female students tended to be higher when compared to male students. This mathematical anxiety will increase when students face an exam. The implication is that students with high levels of mathematical anxiety tend to be disturbed by their concentration in learning mathematical material. Although this does not all have an impact on the results of student learning tests, but still must be improved in learning situations so that students are more comfortable and mathematical anxiety is more reduced students in following the lesson.
The didactical and epistemological obstacles on the topic of geometry transformation
Authors: Sunariah L , Mulyana E
Published: May 2020

This study intends to investigate didactical and epistemological obstacles that occur when students accomplish the problem on the topic of geometry transformation. The data were collected through the students’ answer and interviews of 16 ninth graders and 16 twelfth graders when solving the test instrument used is eight problems related to geometry transformation where there are five of them which are contextual problems. The data analysis reveals that most students have difficulty in identifying contextual problems related to geometry transformation; not quite firm to know the characters from each type of geometry transformation (reflection, translation, rotation, and dilation); use procedural knowledge rather than conceptual understanding; and erroneous in applying previous material concepts related to solving geometry transformation problems. These findings are expected to overcome didactical and epistemological obstacles in teaching and learning of geometry transformation.
Structure analysis of indonesian mathematics textbooks in the topic of relation and function for junior high school
Authors: Firdausi F J , Jupri A
Published: May 2020

The development and interest in mathematics textbooks in Indonesia have a considerable increase in the last decade. In this study, we discuss on structure analysis of Indonesian mathematics textbooks in Relation and Function Topics. We focused structure analysis of mathematics textbooks for 8th-grade students. Three Indonesian mathematics textbooks were analyzed for this study. An analysis framework was developed to investigate the characteristics of the structure in the textbooks from three perspectives: the physical features, the schematic of the math contents in the textbooks, and the patterns in the sequencing of content. We counted the distribution of block types, contents and performance expectation types to help us in examining and analyzing the structure of textbooks in relation and function topics for 8th grade. Our analysis showed that the three textbooks generally have a common structure. Firstly, the textbook A has more pages than the others. Mostly the textbook provided many learning activities with a scientific approach. Secondly, the schematics showed that the brief of structure of the three textbooks which have a common structure: 1) illustration about relation and function; 2) a concept map; 3) a set of narrations, learning activities, worked examples, and exercise to help students in understanding the topics; and 4) a competency test to examine whether students have achieved the aims of learning or not. Lastly, the patterns in sequencing content of the three textbooks showed that they have different patterns. Based on the results, recommendations are given for investigating the linkage between the structure of textbook and performance expectation in order to do further research on these topics.
Didactic transposition from scholarly knowledge of mathematics to school mathematics on sets theory
Authors: Jamilah J , Suryadi D , Priatna N
Published: May 2020

A study was conducted to analyze the didactic transposition process on sets theory. Specifically, this study aimed to analyze the transposition of knowledge on sets theory from scholarly mathematics to school mathematics. This study was a phenomenology study. Abstract algebra textbooks, the 2013 curriculum and school mathematics textbooks were sources of data in this study. The analysis of didactic transposition process used descriptive analysis. The results of this study show that there was a transposition of knowledge in the concept of the set from scholarly mathematics to school mathematics. The transposition of knowledge occurs in the structure and form, and context, but not in sequences. In context, the transposition of knowledge to the concept of the set can be seen from how the concept of the set is built. In scholarly mathematics, the concept of sets is built from abstract formulas. Whereas in school mathematics, the concept of a set is built from concrete formulas, to later obtain semi-concrete and abstract formulas. Structurally and formally, the transposition of knowledge can be seen from the presentation of concepts. Whereas in sequence, there was no transposition of knowledge to the concept of sets.
Gender and mathematical communication ability
Authors: Firdiani N H , Herman T , Hasanah A
Published: May 2020

Communication skills were one of the abilities needed in the 21st century, but the reality showed that students’ mathematical communication skills were still low. The aim of this study was to analyze the mathematical communication ability of male and female students for the content of Space and Shape. The research method used was the qualitative research method. The participants of the study were 6 male students and 6 female students of class VIII Junior High School with age characteristic between 13 -14 years old and have the ability of high, medium and low in general mathematics. Data was collected by using test and interview. Data analysis used includes data reduction, data collection, and conclusions. The study results showed that both male and female students with high ability in general mathematics are able to express situations in the form of pictures or mathematical models, analyse and evaluate mathematical ideas in other forms, but male and female students who have medium and low ability in general mathematics still have difficulty in expressing situations in the form of drawings or mathematical models, analysing and evaluating mathematical ideas in other forms.
Development of high order thinking skills (HOTS) test instrument on exponent for junior high school students
Authors: Zaki M , Amalia R , Sofyan S
Published: May 2020

This study aims to produce the HOTS test instrument on valid, practical and effective exponent material for Class IX students of SMPN 5 Langsa, Aceh. This research is development research (R & D) using the Tessmer development model which consists of 2 stages, namely preliminary and formative evaluation stage. The test run was held in class IX of SMPN 5 Langsa. Data collection instruments include question lattice, HOTS test instruments, validation sheets, and practical questionnaire sheets. HOTS test instrument that has been produced in the form of a set of questions consisting of a grid and 10 HOTS questions in the form of a description that meets the criteria of valid, practical, and effective. The HOTS test instrument was declared valid with an average score criterion of 85% in a very valid category and was declared practical with a score criterion of 80% in the very practical category. The HOTS test instrument developed was also very effective, meaning that it had a good effect or effect on students ‘higher-order thinking skills with an average score of 64.2 which showed students’ high-level thinking skills in good categories.
Assessment processes for slow learners in mathematics learning
Authors: Khaira U , Herman T
Published: May 2020

This study aims to find out how teacher’s to service the students, the role of the teacher in facilitating slow learners in mathematics learning, and other constraints that the slow learners faced. This research was a case study in a junior high school in Bandung. Participants in this study were five students in 8th grade. This research was carried out through observation the learning activities, interviewing the slow learner students, and interviewing mathematics teachers. The one of the result in this study was showed that children who are classified as slow learners were not well facilitated to achieving mathematics learning goals. Slow learners need a longer study time than their peers, so they need special education services. One of alternative solution that can be done by teachers is that teachers should pay special attention such as teacher gives opportunity to slow learners get more time to study the subjects material and do the clinical teaching. The importance of teachers conducting clinical teaching are giving the direction to the slow learner students in the learning process, and helping the students to overcome the difficulties faced by slow learner students.