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Results in Journal Jurnal Pendidikan Matematika (JUDIKA EDUCATION): 28

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, Yufitri Yanto, Novianti Mandasari
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 2, pp 73-79; https://doi.org/10.31539/judika.v2i2.870

Abstract:
The purpose of this study was to develop a realistic worksheet using the Ethnomatematics on SPLDV material and to determine the quality of worksheets in terms of validity and practicality. The method used in this study is the Research and Dependency (R&D) method which is a developmental study referring to the 4-D development model, namely define, design, develop, and disseminate modified to 3-D. The instruments used to measure the quality of worksheets that were developed include validation sheets, and practicality questionnaires. The product of this research is a realistic worksheet using ethnomatematics context on SPLDV material with the advice of eighth grade students of junior high school. The results showed that: (1) the quality of worksheets seen from the validity aspects included in the valid category with an overall average score of 3.06; and (2) the quality of worksheets seen from the practical aspect is categorized very practical with an overall average score of 3.5. Conclusion, the development of PMRI-based worksheets in the context of ethnomatematics in SPLDV material was declared valid and practically used by students. Keywords: Ethnomatematics worksheet, PMRI, SPLDV
Yana Royana, , Rani Refianti
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 2, pp 118-125; https://doi.org/10.31539/judika.v2i2.856

Abstract:
This study aims to develop Student Worksheets (LKS) using the icon of the City of Lubuklinggau (Great Mosque of the As-Salam Taman Kurma) on valid and practical class X trigonometry material. The research method used is the research method of development, Research and Depelopment (R&D) which has been modified into 3-D which in this study uses 3 stages, namely the stage of definition (Define), design, (Design) and development (Develop). Worksheets developed in the level of validity were seen from the expert questionnaire, while practicality was measured from the practicality questionnaire for students. The results of the study, from the analysis of the assessment of four experts namely linguists, material experts, content experts, and media experts showed that the worksheet met valid criteria with an average score of 3.18. While the results of the analysis of the LKS assessment on field trials of students meet practical criteria with an average score of 3.15. In conclusion, the worksheets are designed using the icon of the city of Lubuklinggau with valid and practical trigonometry material Keyword: City Icons, LKS Development
, Maria Luthfiana, Rani Refianti
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 2, pp 91-101; https://doi.org/10.31539/judika.v2i2.887

Abstract:
The purpose of this study was to develop student work ethics-oriented student worksheets based on guided discoveries on the material of flat side space and to find out the quality of worksheets developed in terms of validity, practicality and potential effects. The method, this research is Research and Dependency (R&D), that is development research that refers to a modified 4-D development model. The instruments used to measure the quality of worksheets developed include validation sheets, practicality questionnaires, walkthroughs and tests. Worksheets that are developed are valid based on validation sheets by experts and are practical based on a practical questionnaire. The potential effects of worksheets developed can be seen from the activities and understanding of students in working on the problems given to the worksheets. The results showed that: (1) the quality of worksheets seen from the aspect of validity included in the valid category with an average score of 3.18; (2) the quality of worksheets seen from the practical aspect is categorized practically with an average score of 3.24; and (3) worksheets have a potential effect on student learning outcomes where 20 students (76.9%) are included in the category of completion while there are 6 students (23.1%) have not been completed with the Minimum Learning Completion (KBM) specified. Conclusion, ethnomatematics-oriented worksheet based on guided discovery developed is declared valid, practical and potential in improving student learning outcomes in the material of flat side spaces. Keywords: Ethnomatematics, LKS, Guided Discovery
, Lia Rista
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 2, pp 110-117; https://doi.org/10.31539/judika.v2i2.857

Abstract:
The purpose of this study was to determine the mathematical concepts through ethnomatematics activities of rice farmers in the community in Blang Jrun village, North Aceh. This research is a type of qualitative research with an ethnographic approach. The subjects of this study were 8 people who work as farmers in Blang Jruen Village, North Aceh Regency. Data collection methods used were interviews, documentation and observation. The results showed that community farmers in Blang Jruen Village indirectly used ethnomatematics activities in rice farming. Ethnomatematic activities used include counting, counting and measuring activities. The most common activity in rice farmers is counting activity. In counting activities many mathematical concepts emerge by the farmers. Like addition; reduction; multiplication; division; worth comparison; and the comparison turned value. Whereas the spelling activity only appears in the mention of the vast rice fields. Measuring activity arises when estimating the distance between one crop and another and estimating the size of rice fields and yields. Conclusion, there are a lot of ethnomatematics activities in farming activities carried out by the Blang Jruen Village community in North Aceh Regency. Ethnomatematics activities include counting, counting and measuring activities. These concepts can be used as inspiration and contextual learning reference material. Keywords: Ethnomatematics Activities, Mathematical Concepts, Rice Farmers
, Marisa Z Marisa Z, Novianti Mandasari
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 2, pp 102-109; https://doi.org/10.31539/judika.v2i2.863

Abstract:
The purpose of this study was to develop student worksheets (LKS) using the Lubuklinggau city-based Contextual Teaching and Learning (CTL) on the set material in class VII according to the 2013 curriculum and find out the quality of worksheets developed from the validity, practicality and potential effects of using LKS. The research method used is Research and Development (R&D) research. Development of worksheets using a 4-D model that was modified to a 3-D model. This model consists of 3 stages, namely: the stage of defining (Define), design (Development) and development (Develop) without including the spread (Disseminate) due to time constraints. The results of the study are based on the assessment analysis by the three experts namely: linguists, material experts, and media experts showing that the worksheet fulfills valid criteria with an average score of 3.12. While the results of the analysis of student response questionnaire assessments obtained that the student worksheets meet practical criteria with an average score of 3.55 and have a potential effect of 27 students (84.37%) whose grades reach mastery learning, while 5 students (15.63%) not reached mastery learning. In conclusion, the development of student worksheets using the contextual Teaching and Learning (CTL) based on the city of Lubuklinggau is declared valid, practical and has a potential effect on students' mastery learning. Keywords: Contextual Teaching and Learning, Student Worksheet
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 2, pp 80-90; https://doi.org/10.31539/judika.v2i2.858

Abstract:
The purpose of this study was to determine the role of tesselation in translational and reflection material in developing students' mathematical communication based on a scientific approach. The research method uses design research type validation study involving 30 students of class VII SMP 9 Palembang. The research process produces learning trajectory which contains a series of learning processes in two activities, namely scientific on translational material and scientific on reflection material. Every scientific activity consists of observing, asking, reasoning, trying, and forming networks. The results of the study showed that by providing learning material through a scientific approach, the role of tesselations could help students to carry out mathematical communication so that they could identify translational and reflection material. Therefore, students can understand the concepts of translation and reflection and solve problems related to the material. In conclusion, learning using tessellation with a scientific approach effectively helps students understand the concepts of translation and reflection. Through activities such as observing, asking, reasoning, trying, and forming networks Keywords: Mathematical Communication, Scientific Approach, Tessellation
, Yudi Yunika Putra
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 2, pp 11-24; https://doi.org/10.31539/judika.v2i1.718

Abstract:
This study aims to produce learning trajectories of addition and subtraction of material numbers using the context of Bangka Belitung, also to find out whether the use of these learning designs can support students' Critical Thinking Abilities (KBKM). The research method, this research is a validation study design research type involving 6 students in the pilot experiment stage, and 25 students in the teaching experiment stage. The alleged learning trajectory was developed from a series of learning activities using the context of the Pacific Islands, such as sahang / pepper seeds as a model in learning the addition and subtraction of numbers. The results showed the use of trajectories in the context of Bangka Belitung provided different assessment results between the students' pretest and posttest scores. Most students have been able to solve the problem of addition and subtraction and provide arguments in answering the problems encountered. In conclusion, the use of instructional design using the context of Bangka Belitung in the learning of addition and subtraction of numbers can support student CBCS. Keywords: Numbers, Design, Learning Context
Lutfiyah Lutfiyah, Dwi Noviani Sulisawati
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 2, pp 58-65; https://doi.org/10.31539/judika.v2i1.716

Abstract:
The purpose of this study is to see the effectiveness of the use of e-learning based media in mathematics learning at the Raudlatuth Thalabah Vocational School. Research methods, namely quantitative research with descriptive research designs where data collection uses the test, observation, and questionnaire methods. Data analysis was performed descriptively quantitatively involving 25 students of class X-A. The results of the research and analysis of the data obtained obtained information that each aspect of the ability to manage the learning process, and student activities during learning, learning outcomes of students and the responses students have after participating in learning are good criteria. It can be concluded that mathematics learning using e-learning based media is significantly effective. Keywords: Effectiveness, E-learning Media, Mathematics Learning
Eric Dwi Putra, Indah Rahayu Panglipur
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 2, pp 25-35; https://doi.org/10.31539/judika.v2i1.700

Abstract:
The purpose of the study, determine the level of performance of practitioners through student learning activities. The level of student practitioner performance is seen when solving mathematical problems (story problems) sub-topics of numbers. The research method used is quantitative descriptive. The analysis technique uses validity test and source triangulation. In this study the subjects of class VII students were taken as many as 6 people. Retrieval of data using observations and questions (problems). Data were observed using an observation sheet instrument, while questions with realistic media. The results of the study, the validation of the instrument on the observation sheet using the Va value for the test questions obtained 2.9 results thus the instrument is said to be valid. Based on the results of observations ST satisfies all activities well but in activities related to courage still can not be said to always be brave in responding and asking questions / opinions expressly, SS fulfills 3 out of 6 student activities well. These results are the same for the 2 subjects taken. SR fulfills 5 out of 6 student activities well. These results are the same for the 2 subjects taken. Conclusions, the Practitioner student's level of performance has different levels of fulfillment of critical standards through student learning activities. Students with high ability category (ST) can meet all critical standard indicators while students with medium (SS) and low (SR) ability categories cannot fulfill. Key Words: Performance Level Practitioners, Learning Activities
, Reny Wahyuni
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 2, pp 50-57; https://doi.org/10.31539/judika.v2i1.701

Abstract:
This study aims to determine the completeness of mathematics learning outcomes of VIII grade students of SMP Negeri Selangit after applying the Auditory, Intellectually, Repetition (AIR) learning model. The research method, is a quantitative research with quasi-experimental research design (quasi experiment). The sample in this study was grade VIII.4 students consisting of 30 students. Data collection was carried out using test techniques. The test data collected was analyzed using t-test. The results of the study, based on t-test analysis with a significant level α = 0.05, obtained an average test score before the application of the Auditory, Intellectually, Repetition (AIR) learning model was 22.15 and after the application of the Auditory learning model, Intellectually, Repetition (AIR) obtained an average test score of 73.94 with tcount> ttable (2,821)> (1,699). Conclusion, student mathematics learning outcomes after VIII SMP Negeri Selangit after the application of the Auditory, Intellectually, Repitition (AIR) model are significantly completed. Keywords: Auditory, Learning Outcomes, Intellectually, Repetition
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 2, pp 36-49; https://doi.org/10.31539/judika.v2i1.624

Abstract:
The research objective is to improve the ability to understand the concept of material transformation through the implementation of ICT-based learning using the Sketchpad Geometer software for Karai 1 Tebat Middle School students in Kepahiang District. Method, this research is a comparative descriptive study. The sample is grade IX students totaling 30 people. Data analysis uses descriptive comparative analysis. After descriptive comparative continued reflective. The results of the study, an increase from the initial conditions the average value of students from 44.67 to 65.83 in the first cycle and rose to 77.42 in the second cycle. So that from the initial conditions to the first cycle, increased by 44.37%, from the initial conditions to the second cycle increased by 73.33% and classified as high category. The results of observations of student activity increased in the learning process with a high category. Conclusion, the use of ICT-based media using the Sketchpad Geometer Software can improve students' conceptual understanding skills in the transformation of material, and can improve student activities. Keywords: Geometer`s Sketchpad Software, Concept Understanding
, Helni Indrayati, Herdiyan Siswanto
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 2, pp 66-72; https://doi.org/10.31539/judika.v2i1.759

Abstract:
The purpose of this study was to determine the trajectory of student learning on ball volume using quaci in Class IX. The research method, using a Validation Study design involving 38 students of class IX SMP Pagaralam PGRI. The stages of design research in learning consist of three phases: preparation for the experiment, design experiment, and retrospective analysis. Learning is carried out through three activities consisting of observing sunflowers, taking sunflower seeds, and wrapping them in accordance with PMRI's approach to ball volume material. The results showed that students could understand the concept of ball volume by completing a series of these activities. In addition, students have their own strategies in solving problems in each activity to express it in abstract form. Conclusion, the use of quaci in learning volumes of ball gives positive results for students in understanding problems related to real life in accordance with the PMRI approach. Keywords: Design Research, Kuaci, PMRI
, Rani Refianti
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 2, pp 1-10; https://doi.org/10.31539/judika.v2i1.729

Abstract:
The purpose of this study is to produce student worksheets (LKS) that are validity and practical, and have potential effects on student learning outcomes. The method in this study uses the modified Dick and Carey development method. LKS developed valid based on expert and practical response questionnaires based on student response questionnaires. The potential effects of LKS developed can be seen from the activities of students in working on the questions on the LKS, where students more easily understand the mathematical concepts contained in the LKS and use the concepts appropriately in solving the problems given. The results of the study Of the 23 students who were the subjects of the study obtained 11 people were in the excellent category or around 47.82%. Whereas there are 5 people in katerogy or around 21.73%, enough categories are obtained by 4 people or around 17.39% and the poor category is obtained by 3 people or around 13.04%. It can be concluded that LKS designed using a realistic Indonesian mathematical approach based on the context of South Sumatra has a potential effect on student learning outcomes. Keywords: PMRI, Student worksheet, Development
, Lucy Asri Purwasi
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 1, pp 126-134; https://doi.org/10.31539/judika.v1i2.413

Abstract:
The purpose of this study was to determine the effect of problem-based learning models on mathematical creative thinking abilities of eighth grade students of SMP Negeri 6 Lubuklinggau. This study used the True Experimental Design. In this study, the samples used were two classes, namely the control class and the experimental class. The average score of mathematical creative thinking skills that had been obtained by students in the final test in the experimental class was 19.5517 and in the control class was 14.4783. Both classes were normally distributed and homogeneous both at the pre-test and the post-test. The data collection was analyzed by using the t-test. The results of the t-test analysis were t-value = 2.5400 and t-table (significance level α= 0.05) = 2.001. This showed that t-value> t-table, so it can be concluded that there is a significant effect of problem-based learning models on mathematical creative thinking abilities of eighth grade students of SMP Negeri 6 Lubuklinggau. KeyWord: Problem-based, creative mathematical learning model
, Harumi Citra Pertiwi
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 1, pp 71-82; https://doi.org/10.31539/judika.v1i2.313

Abstract:
The purpose of the study is to determine the significant effect of SAVI learning model on mathematic communication skill of the eighth grade students of Karang Dapo State Junior High School in academic year 2016/2017. The study used True Experimental Method with design of control group pretest posttest. The Data analysis techniques used include normality test, homogeneity test and t-test. This research was carried out in class VIII Karang Dapo state Junior High School in academic year 2016/2017. This study was conducted in 5 (five) meetings, including 3 (three) learning meetings, 1 (one) pretest and 1 (one) posttest. 103 students as the members of 4 groups of eighth grade randomly selected to have equal opportunities to be the sample. Based on the results of data analysis with a significant level of α = 0.05 it can be concluded that there is a significant effect of SAVI learning model on the mathematic communication skills of eighth grade students of Karang Dapo State Junior High School in Academic Year in 2016/2017.The average score of students' mathematic communication skills in the experimental class was 25.64 and the control class was 17.02. Keywords: SAVI, communication, mathematics
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 1, pp 93-104; https://doi.org/10.31539/judika.v1i2.374

Abstract:
This study aimed to determine the difference in the improvement of students' mathematical representation ability in problem-based learning (PBL) and regular learning as well as to determine the difference in the improvement of students' self confidence in PBL and regular learning. In addition, to find out whether there was an interaction between learning and students' early mathematical ability toward the improvement of students' mathematical representation ability and whether there was an interaction between learning and students' early mathematical ability toward students' self confidence. The population was all students of SMP Negeri 1 Lhokseumawe. The sample was taken randomly as many as 2 classes which were consisted of 60 students. Data analysis was conducted by using Two way ANAVA. The conclusion were (1) the ability improvement of mathematical representation of students given a PBL model was higher than students given regular learning. (2) the improvement of students' self confidence given a PBL model was higher than students given regular learning. (3) There was no interaction between the learning model and students' early mathematical ability toward the improvement of students' mathematical representation skill. (4) There was no interaction between learning model and students' early methematical ability toward the improvement of students' self confidence. Keywords: Problem based learning model, regular learning, mathematical representation, and self confidence.
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 1, pp 105-116; https://doi.org/10.31539/judika.v1i2.381

Abstract:
This study aimed to (1) describe students' creative thinking skills during the learning process by using PBL model, (2) find out the improvement of students' creative thinking skills after using the PBL model, and (3) describe student learning independence during the learning process by using PBL model. This study uses mixed method research with concurrent embedded strategy. The sample was selected by random sampling, namely students of class VIII-3, which were consisted of 28 students from all eighth grade of SMP Negeri 16 Banda Aceh. The instruments in this study were daily description test, observation and questionnaire. These instruments were used to obtain data of the improvement of students' creative thinking abilities after using the PBL model were pre-test and post-test, and also the instruments which were used to describe student learning independence during the learning process by using PBL model. The result of data analysis in the daily description test and observation used the assessment rubric of creative thinking skills with qualitative descriptive method. Pre-test and post-test results were analyzed by statistical test using SPSS version 22 software for Windows, and the results of the learning independence questionnaires were analyzed by using a Likert scale and percentage. The result of the study showed that students are creative in solving problems related to the comparison during the PBL model in learning process. Thus, there was an improvement in students' creative thinking skills after using PBL learning model. The result of this study also showed that students have learning independence during the PBL model in learning process. Keywords: Problem Based Learning Model (PBL), Creative Thinking Ability, Learning Independence.
As Elly S, Novianti Mandasari
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 1, pp 61-70; https://doi.org/10.31539/judika.v1i2.312

Abstract:
This study aims (1) to analyze the process of abstraction of class XI IPA 2 of Lubuklinggau State 6 High School in understanding the concept of geometry overviewed from Van Hiele theory; (2) to analyze the process of abstraction of students of class XI IPA 2 in Lubuklinggau State Senior High School 6 in understanding the principles of geometry overviewed from Van Hiele theory. The method used in the study was a qualitative method. The results of data analysis obtained from five thinking stages based on Van Hiele's theory that theoretical of grade XI science 2 students of State Senior High School 6 Lubuklinggau only at stage 0 to stage 2, meanwhile at stage 3 and stage 4 the level of thinking of students of class XI 2 Science 2 State Senior High School 6 Lubuklinggau was still having difficulties in drawing conclusions from general matters towards specific matters and at this stage it is also a stage of thinking that is high, complicated and complex. Therefore, it can be concluded that the level of thinking of XI IPA 2 students at State Senior High School 6 Lubuklinggau is still low. Keywords: abstraction process, geometry concept, Van Hiele theory
, Rani Refianti
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 1, pp 135-143; https://doi.org/10.31539/judika.v1i2.403

Abstract:
The objective of the study was to know the influence of missouri mathematic project model based open-ended questions toward students' mathematics communication ability. The population of the study was all seventh graders of SMP Negeri 8 Lubuklinggau in academic year of 2018/2019 meanwhile the sample of this study was selected randomly. The data collection used two essay tests namely pre-test to know students' mathematic ability before following learning process and post-test after following learning process. The data analysis used normality test, homogeneity test, and t-test. Based on t-test analysis result with α = 0.05, found that t-value>t-tabel (6,92> 1,67), so it can be concluded that there is influence of learning model of missouri mathematic project based on open-ended questions toward students' mathematic communication ability of seventh graders of SMPN 8 lubuklinggau. Keywords: Missouri mathematic project, open-ended, communication ability
Drajat Friansyah, Maria Luthfiana
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 1, pp 83-92; https://doi.org/10.31539/judika.v1i2.322

Abstract:
This study aims to explain the steps in designing teaching materials in the form of LKS oriented Etnomatematics on SPLDV material using the first two stages of the ADDIE development model. The method used by the writer in designing teaching materials is a part or the first two stages of the ADDIE development model which consists of the stages of analysis, design, development, implementation, and evaluation. The analysis stage aims to identify the curriculum, student characteristics, the need for instructional materials, while the design stage is to design the LKS framework and research instruments. The results of the study are ethnomatematics concepts that can be integrated into learning by presenting in LKS, namely, the unit of calculation in buying and selling transactions in traditional markets in the form of "secanting and setembuk ", besides that Lubuklinggau's typical batik motif is durian motif. The ethnomatematics context becomes the starting point in the learning process presented in the LKS on SPLDV material, so that mathematics learning can be more meaningful. In Conclusion, a good quality of Mathematics learning must be supported by various aspects, one of the main aspects is professional teacher who is able to utilize various learning resources and develop teaching materials (LKS) by utilizing the daily cultural context (ethnomatematics) experienced by students, thus the process of meaningful mathematics learning occurs and grows awareness of students to appreciate local wisdom and culture in this case the culture of Lubuklinggau. Keyword: etnomatematika, SPLDV
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 1, pp 117-125; https://doi.org/10.31539/judika.v1i2.373

Abstract:
This study aimed to improve the activity and learning outcome of the eighth grade students of Al-Ulum Islamic school Medan through the TAPPS learning strategy based on STEM education. The research method was a classroom action research as much as two cycles. Each cycle consisted of 4 stages: planning, action, observation, and reflection. The data analysis technique was a descriptive analysis model. Data collection methods were observation and tests. The results showed that the implementation of using the STEM-based TAPPS learning strategy could improve learning activity of the eighth grade student of Al-Ulum Islamic school Medan on the subject of geometry flat side (Bangun Ruang Sisi Datar). This was shown by the percentage of group activity of students in the cycle I was 50.71% or in a good category, the percentage of student group activity in the cycle II was 85.04% or in an excellent category. Thus, the enhancement of students' learning activity using the TAPPS learning strategy based on STEM education could also improve students' learning outcome. This was shown by the percentage of learning mastery in the cycle I was 65,6255% or in the criteria of learning mastery was achieved but it was still classified as low and the percentage of learning mastery, in the cycle II was 90,625% or in the criteria of leaening mastery was achieved. The conclusion of this study is the use of TAPPS-based STEM education learning strategy can improve the activity and learning outcome of students. Keyword: TAPPS strategy,STEM education, activities, students' learningout come
, Novianti Mandasari
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 1, pp 144-151; https://doi.org/10.31539/judika.v1i2.412

Abstract:
The objectives of the study were to develop valid and practical problem based learning of students' worksheet for junior high school in Lubuklinggau. This is developmental study which formative research type applied. The subject of the research was 75 junior high school students of Lubuklinggau city consists of 27 students of SMPN 9 Lubuklinggau, 27 students of SMPN 11 Lubuklinggau, 21 students of SMP PGRI Lubuklinggau. Walk through was used in data collection to know the construct, content and language validities of students' worksheet; document to know the practicality of students' worksheet. This research produced problem based learning students' worksheet which measure the students' mathematic reasoning ability. The result of mathematic reasoning ability test was 70.15. In summary, developing students' worksheet has potential effect toward students' mathematic reasoning ability. Keywords: Worksheet (LKS), problem based learning, reasoning ability
Drajat Friansah, Idul Adha, Rani Refianti
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 1, pp 1-11; https://doi.org/10.31539/judika.v1i1.243

Abstract:
The objectives of this research are: 1) produce a valid and practical pocket book of building material based on realistic mathematical education approach (RME), 2) know the potential effect that arises from developing pocket book of building material of flat side space, 3) knowing the student's response to pocket book material of building flat side space. Development of pocket book is done through two stages of priliminary stage (preparation) and formative evaluation stage. The results of this study show that pocket book wake up flat side space using RME approach that produced valid and practical. Valid is reflected from the revision after being validated by an expert based on content, constructs, and language. Based on the document analysis of the work result of the students during field test, showed the final test of learning using Pocket book with RME approach get very good category 43,75%, good 28,12%, enough 15,62%, and less 12,5%, data result the test is that the learning done shows a good potential effect. Based on analysis of student response result to pocket book developed for indicator of interest in pocket book obtained 86,09% student express strongly agree, material indicator 79,97% student agree and indicator from linguistic side 89,32% student strongly agree Keywords: Pocketbook, PMRI
Bambang Winarto
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 1, pp 12-20; https://doi.org/10.31539/judika.v1i1.280

Abstract:
The aim of this research is to improve students' learning mastery. This research uses qualitative and quantitative descriptive approach and this type of research is classroom action research. Methods of data collection using observation, test and documentation. The results obtained in this study is the result of student learning. This shows that in teaching and learning activities with contextual learning the students become very active. While student's learning completeness classically in cycle I reach 77,5% increase in cycle II to 90% so that only some student who have not finished their study. This suggests that STAD type cooperative learning can be considered as a learning model used by teachers. The conclusion that can be drawn from the data analysis and discussion is by applying STAD type cooperative learning can improve student learning outcomes. Based on the results of data analysis and discussion of the results of research on the application of STAD learning on student learning outcomes, it can be concluded the application of these methods can attract students to follow the teaching and learning activities to the end of the lesson with a pleasant learning environment that can lead to increased student learning outcomes. Keywords: Cooperative Learning, TYPE STAD, Learning Outcomes.
Nur Fitriyana, Rani Asnurida
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 1, pp 42-52; https://doi.org/10.31539/judika.v1i1.244

Abstract:
This research aims to determine the influence of Think Talk Write (TTW) strategy to understand of mathematical concept students class VIII SMP Negeri 2 Lubuklinggau. The method used in this research is pure experiment. The population is the entire class VIII SMP Negeri 2 Lubuklinggau academic year 2016/2017 which amounts to 444 students, as the sample is class VIII.9 as experimental class and class VIII.7 as a control class taken at random. Data collection is done by test technique. Collected data was analyzed using t-test at significant level α = 0,05, obtained tcount > ttable that is 3,48 > 1.67, so it can be concluded that there is significant influence of Think Talk Write (TTW) strategy to understanding of mathematical concepts student class VIII SMP Negeri 2 Lubuklinggau. The average score of students' understanding of mathematical concepts in the final test of the experimental class is 25.23 and the control class is 17.44. Keywords: Think Talk Write strategy (TTW), Understanding of Mathematical Concepts.
Yufitri Yanto, Ratna Juwita
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 1, pp 53-60; https://doi.org/10.31539/judika.v1i1.247

Abstract:
This research aims to determine the completeness of the results of learning mathematics students VIII SMP Negeri B.Srikaton academic year 2017/2018 after applied model of cooperative learning type Student Facilitator and Explaining (SFaE). This type of research is experimental, with the design used is pre-test and post-test group design. The population in this study is all students of class VIII SMP Negeri B.Srikaton which amounted to 258 students. One class was taken randomly, that is class VIII.6 was 37 students as experiment class. The result of the research is the final score of the analysis using the t-test. The average score on mathematics learning outcomes is 81.57. Based on the results of data analysis with significant level α = 0.05 obtained tcount = 6.41 and ttable = 1.69 because tcount > ttable, then obtained the conclusion that the Application of Cooperative Learning Model Type Student Facilitator and Explaining (SFaE) on Student Learning Outcomes Mathematics Class VIII SMP Negeri B.Srikaton Lesson Year 2017/2018 completed significantly. Keywords: Cooperative Learning Model Type Student Facilitator and Explaining (SFaE), Learning Outcomes.
Novianti Mandasari
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 1, pp 21-32; https://doi.org/10.31539/judika.v1i1.235

Abstract:
This study aimed to describe the Cognitive Elaboration Model Students In The Process Of Abstraction Concepts And Principles Of Mathematics Two-Dimensional Space In Class Xi Technique Las SMKN1 Curup. This study used a qualitative approach. The subjects were students of class XI Technique Las SMK 1 Curup. The main instrument is the researcher guided the students' abilities test sheets and sheets interview guide. Data were analyzed through three stages of data reduction, data presentation and conclusion. Decryption of students in the process of elaboration of the model abstraction mathematical concept of two-dimensional space:Model Recognizing; Students clearly recognize the shapes of two-dimensional space, students can understand the definition of a two-dimensional geometrical objects of a given two-dimensional space, and based on the information that the student has previously obtained. students can determine the objects that constitute the two-dimensional geometry and not the two-dimensional geometry. Students can find the principle of the wake - wake up a two-dimensional space and linking these results with the information stored in the memory of the student. Model Building With; Students can find the relationships of concepts and principles of two-dimensional geometry by analyzing the images of objects are two-dimensional geometry. Model Contracting; Concepts students know what to use, and to know the students visualize concepts, and sketched a two-dimensional object space of the existing problems, in solving the problems associated with the incorporation of mathematical principles contained in the concept, and the students' knowledge according to students' ability to recall concepts that have been held so mengasilkan an idea to solve the existing problems. Students are able to use the concepts and principles of mathematics in solving the problems that students are able to make conclusions from the results of the settlement. Students are able to explain or memperesentasikan his work. Keywords: Cognitive elaboration Model, Process Abstraction, Mathematics Concepts, Principles of Mathematics,.
Maria Luthfiana, Yuliansyah Yuliansyah, Anna Fauziah
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 1, pp 33-41; https://doi.org/10.31539/judika.v1i1.184

Abstract:
This research issue is whether there is influence of problem-based learning model for mathematical problem solving ability of students grade XI IPA MA Negeri 1 Lubuklinggau ?. The method used is a true experimental design were carried out with the comparison group. The study population was all students in grade XI IPA MA Negeri 1 Lubuklinggau, which consists of 113 students. As an experimental class is a class XI IPA 3 as many as 36 students and a control class is the class XI IPA 2 were 38 students randomly selected. Data collected by the testing techniques in narrative form. Data were analyzed using t-test. Based on the results of t-test analysis on the level of significance α = 0.05, obtained t_hitung (6.80) > t_tabel (1.671), so that it can be concluded there is the influence of problem-based learning model for mathematical problem solving ability of students grade XI IPA MA Negeri 1 Lubuklinggau. Keywords: Problem Based Learning, Problem Solving Ability Mathematics
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