scholarly journals Didactical Design Realistic Mathematics Education Based on Green Mathematics in Direct & Indirect Proportions Concept at Junior High School

Author(s):  
Idvan Aprizal Bintara ◽  
Tatang Herman ◽  
Aan Hasanah

This research is motivated by students’ learning obstacles in direct & indirect proportions concept through literature studies and preliminary studies conducted by a researcher. Furthermore, the environmental care attitude of students is low. The purpose of the research is to create the alternative didactical design; a didactical design Realistic Mathematics Education based on Green Mathematics consisting of four lesson designs arranged due to learning obstacle in direct & indirect proportions concept, as well as relevant learning theory.  Four lessons were implemented for 40 seventh grade students in Lembang who have not learned yet about the concept. The research method used in this study is qualitative research as Didactical Design Research. There are three stages in this study; the first stage is prospective analysis or didactic situation analysis producing hypothetical didactic design, the second stage is metapedadidactic analysis as implementation of hypothetical didactic design, and the third stage is retrospective analysis that produces empirical didactic design. The result shows that hypothetical didactic design can minimize the students’ learning obstacles in direct & indirect proportions concept; almost all student showed environmental care attitude is well; and almost all student showed positive attitude towards mathematics learning using hypothetical didactic design. Based on the results of the research, developed didactical design that can be applies as one of the alternative for teaching materials in direct & indirect proportions learning concept at schools that have the same characteristics.

2017 ◽  
Vol 5 (1) ◽  
Author(s):  
Mika Meitriana Manurung ◽  
Hening Windria ◽  
Lukman Fakhmi

Intersection and union concepts are crucial part of operation in sets, especially in solving word problems and creating the venn diagram. In fact, not a few students do fallacies in representing sets word problems into a sets operation, so they do mistakes in solving the problems. This study aims to investigate students’ thinking in learning intersection and union concept, specifically by using colored cards. The learning is designed under Realistic Mathematics Education (RME) approach and the principle used is emergent modeling. The method used in this study is design research. The subjects of this study is 25 students of the 7th grade junior high school, in which five of them were the focused group. The main findings in this study are description of students’ thinking while learning union and intersection using colored cards in the class, and any kinds of students’ ‘diagram venn’models. Keywords: design research, intersection, realistic mathematics education, union, venn diagram


2017 ◽  
Vol 2 (2) ◽  
pp. 173-184
Author(s):  
Tatang Supriatna ◽  
Darhim Darhim ◽  
Turmudi Turmudi

ABSTRAKSI: Tujuan penelitian ini untuk mengetahui kesulitan belajar Matematika dan perbedaan peningkatan kemampuan berpikir logis siswa, yang diberi perlakuan pembelajaran LIT (Local Instruction Theory) dengan pendekatan PMR (Pendidikan Matematika Realistik) dengan siswa yang hanya diberi pendekatan PMR saja. Metode penelitian berupa “design research”, dengan subjek penelitian berjumlah 184 siswa SMP (Sekolah Menengah Pertama), yang berasal dari peringkat sekolah yang berbeda. Hasil penelitian menunjukan bahwa kesulitan belajar yang dialami siswa SMP adalah karena sulit dalam memahami variabel, koefisien, dan konstanta; sulit membaca maksud soal, sulit menyusun strategi dalam menyelesaikan soal; sulit dalam proses perhitungan; dan masih salah dalam penulisan persamaan. Peningkatan kemampuan berpikir logis siswa yang pembelajarannya menggunakan LIT dalam PMR ternyata lebih tinggi daripada siswa yang pembelajarannya menggunakan PMR saja. Perlu kajian lanjutan untuk melihat pengaruh penggunaan LIT dalam PMR terhadap kemampuan Matematis lainnya dan pada berbagai level sekolah.KATA KUNCI: Local Instruction Theory; Kesulitan Belajar; Pendidikan Matematika Realistik; Siswa SMP; Berpikir Logis. ABSTRACT: “The Local Instruction Theory in Realistic Mathematics Education for Improving the Ability of Logical Thinking”. The objective of this study was to determine the Mathematical learning difficulties and differences increase students' ability to think logically whose treated by learning approach LIT (Local Instruction Theory) with RME (Realistic Mathematics Education) and students treated by PMR learning approach only. The research method in the form of design research, with research subjects totaling 184 of JHS (Junior High School) students, derived from different school rankings. The research findings show that the difficulties of learning experienced by JHS students were caused by difficult to understand the variables, coefficients, and constants; difficult to read, to interpret the intent problems, to strategize in solving problems; difficult in the process of calculation; and still wrong in writing the equation. The increasing of logical thinking ability of students in learning to use LIT with RME is higher than students whose learning by using RME only. A further study is required to see the effect of using LIT with RME towards other Mathematical skills and at various school levels.KEY WORD: Local Instruction Theory; Difficulty Learning; Realistic Mathematics Education; Junior High School Students; Logical Thinking.    About the Authors: Tatang Supriatna adalah Mahasiswa SPs UPI (Sekolah Pasca Sarjana, Universitas Pendidikan Indonesia), Jalan Dr. Setiabudhi No.229 Bandung 40154, Jawa Barat, Indonesia. Prof. Dr. Darhim dan Prof. Dr. Turmudi adalah Dosen SPs UPI di Bandung. Untuk kepentingan akademik, penulis bisa dihubungi dengan alamat emel: [email protected], [email protected], dan [email protected] to cite this article? Supriatna, Tatang, Darhim Turmudi. (2017). “Local Intruction Theory dalam Pendidikan Matematika Realistik untuk Menumbuhkan Kemampuan Berpikir Logis” in MIMBAR PENDIDIKAN: Jurnal Indonesia untuk Kajian Pendidikan, Vol.2(2), September, pp.173-184. Bandung, Indonesia: UPI [Indonesia University of Education] Press, ISSN 2527-3868 (print) and 2503-457X (online). Chronicle of the article: Accepted (April 26, 2017); Revised (June 30, 2017); and Published (September 30, 2017).


Author(s):  
Mika Meitriana Manurung ◽  
Hening Windria ◽  
Samsul Arifin

The topic of the set is a basic concept in mathematics and its relationship is close to our daily life. However, some studies in Indonesia have found that the students have difficulties in solving the set problem. This can be due to the pattern of mathematics teaching in schools. This study aims to provide a design of learning in the set topic with Realistic Mathematics Education (RME) approach. The research questions are: (1) How is the design of mathematics learning in the topic of the set using the RME approach? (2) How do students learn the topic of the set by using the RME approach? This research method is design research with one cycle in SMP Dasana Indah Tangerang. The subjects were 24 students with one focus group, 5 students who had no errors in the initial test. Data of research obtained from sound recording, video, photos, and Student Activity Sheet, then be analyzed by comparing the Hypothesis of Trajectory Learning and Trajectory of Actual Learning. This study produces the Theory of Local Instruction, with four lessons, namely: (1) Determining the set and not the set; (2) Finding the concept of set of universe, subsets, empty set, and describing the models; (3) Finding the concept of intersection, union, and illustrating the models; (4) Find the concept of complement, difference, and describe the models, and use the models to solve the story problem. In the learning process, through grouping games and describe the model, student learning the notion of set enthusiastically and actively. Keywords: design research, set, realistic mathematics education approach


MaPan ◽  
2020 ◽  
Vol 8 (2) ◽  
pp. 343-359
Author(s):  
Julia Noviani ◽  
◽  
Firmansyah Firmansyah

This study aims to produce learning tools using Realistic Mathematics Education approach to relations and functions material. This type of research used the Plomp development model, which consists of three phases, namely the initial investigation phase, the development or prototyping phase, and the assessment phase. The research subjects were grade VIII students of SMPN 2 Takengon. The instruments of research are expert validation sheets, practicality assessment sheets, and effectiveness assessment sheets. The resulting tools include lesson plan, student books, teacher books, and student worksheets. The average assessment of the four aspects of the lesson plan was 3.89 with valid criteria. The average assessment of the three aspects of the teacher's book was 3.98 with valid criteria. The average assessment of three aspects of the student book was 3.97 with valid criteria. The average assessment of two aspects on the student worksheets was 3.75 with valid criteria. Learning implementation 96.86% and carried out well. The teacher's response showed that, on average, 82% of the lesson plan assessment aspects are responded positively by the teacher. The response of student books was obtained by 83.2% of students who gave positive responses to student books and 82.6% of students who gave positive responses to student worksheets. The students’ learning outcomes obtained a classical average value of 74.2. The results of validation and testing of learning tools show that the tools meet the criteria of learning tools developed, referring to valid, practical, and effective.


2020 ◽  
Vol 2 (2) ◽  
pp. 145-165
Author(s):  
Erna Sari Agusta

In general, junior high school students learn mathematics with an inductive pattern. However, the statements in mathematics are obtained through a deductive mindset. Therefore we need a learning approach that can accommodate students' thinking patterns. Mathematics adheres to the law of consistency which causes the structure of material in mathematics to be hierarchically arranged, interrelated, and has characteristics that have implications for determining strategies, approaches and the use of learning media. This article aims to review the theory of the Realistic Mathematics Education Approach (PMR). An approach that can make students involved in building their own concepts and models used through problem solving. The PMR discussion begins with the definition of PMR, the principles and characteristics of PMR, and the contribution of PMR in learning mathematics. Writing this article uses the literature review method which consists of books, journal articles, and other documents related to the topic of discussion. The results of the study found that Realistic Mathematics Education (PMR) is a mathematics learning innovation that is in accordance with the 2013 curriculum.The use of contexts and models, as well as the use of student contributions through discussions to discuss various linkages between mathematics material, makes this approach able to contribute to improving five general mathematical abilities. which includes: the ability to understand mathematics, problem solving, mathematical connections, mathematical communication, and mathematical reasoning.


2020 ◽  
Vol 3 (1) ◽  
pp. 30-34
Author(s):  
Suci Nooryanti ◽  
Sri Utaminingsih ◽  
Henry Suryo Bintoro

The purposive of this study are (1) the average mathematical communication abilities of students who have learned by applying the ethnomatemics-based Realistic Mathematics Education approach, (2) the mastery of learning mathematical communication abilities of students who are taught with the Mathematics-Based Realistic Mathematics approach. This type of research is quantitative with true experimental design research design using the form of Posttest Only Control. The sample uses a simple random sampling technique and is carried out in class V SD 5 Jepang as an experimental class and class V SD 1 Gulang as a control class. Data collection techniques are tests of students' mathematical communication abilities. Data analysis techniques in this study include normality test, homogeneity test, average difference test and learning completeness test. The results showed that (1) the average mathematical communication ability of the experimental class students was higher than the average mathematical communication ability of control class students with expository learning; (2) students' mathematical communication abilities with ethnomatemicsbased Realistic Mathematics Education approach achieve mastery learning.


2019 ◽  
Vol 3 (1) ◽  
pp. 27
Author(s):  
Dodi Ardiansah ◽  
Mia Yusmianti ◽  
Anugrah Ramadhan Firdaus

This study aims to explain the application of realistic mathematics education in addition and subtraction mathematics learning in class III of SDN 1 Sudimampir, one of the low motivation of students to learn mathematics addition and subtraction is caused by learning activities that are more teacher-centered, so students are less actively involved in the learning process and result in monotonous learning activities in the classroom. Based on the above problems, improvements can be made to increase motivation to learn mathematics using realistic mathematics education. population and sample in the study focused on class III students, the method used in this study was the experimental method. The data collection technique is to provide learning and working on the problem, then grouping values based on the results of student performance in working on mathematical questions, arranged based on group distribution data for more specific value distribution into the mean median mode and graphs in order to find out the results of applying realistic mathematical methods education is expected to increase students 'motivation to learn mathematics, from the study there was a significant increase in the mean score of students' scores in mathematics learning addition and subtraction, namely ± 67,57.


Author(s):  
Hendra Erik Rudyanto ◽  
Anik Ghufron ◽  
Hartono Hartono

One of the abilities students must possess is Creative Thinking Ability (CTA) in order to succeed in their lives. Learning must facilitate students to develop CTA; one of them is by developing a mobile application based on Realistic Mathematics Education (RME). The purpose of this study is to determine the level of validity/feasibility, practicality, and effectiveness of mobile application based RME. This mobile application development used the ADDIE model development procedure. The subjects in this study were grade 4 elementary school students. The validation data collection techniques through validation sheets, practicality data through CTA tests. The results of the study show that the developed of mobile application integrated with realistic mathematics meets valid/proper requirements based on expert and practitioner assessments that are practical and easy if applied in mathematics learning and that is effective in improving students’ creative thinking ability.


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