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Journal Jurnal Pendidikan Matematika (JUDIKA EDUCATION)

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Eric Dwi Putra, Indah Rahayu Panglipur
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 2, pp 25-35; doi: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
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 2, pp 36-49; doi: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
Sciprofile linkMaria Luthfiana, Reny Wahyuni
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 2, pp 50-57; doi: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
Sciprofile linkSri Handayani, Novianti Mandasari
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 1, pp 144-151; doi: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
Sciprofile linkIdul Adha, Rani Refianti
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 1, pp 135-143; doi: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
Sciprofile linkMaria Luthfiana, Lucy Asri Purwasi
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 1, pp 126-134; doi: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
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 1, pp 105-116; doi: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.
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 1, pp 117-125; doi: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
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 1, pp 93-104; doi: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.
Sciprofile linkDrajat Friansyah, Maria Luthfiana
Jurnal Pendidikan Matematika (JUDIKA EDUCATION), Volume 1, pp 83-92; doi: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
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