Articles
<![CDATA[The Impact of 3D Geometry Assisted 6E Instructional Model to Improve 3D Geometry Thinking Skills of Junior High School Students ]]>
<![CDATA[Sudirman Sudirman]]>;
<![CDATA[Yaya Sukjaya Kusumah]]>;
<![CDATA[Bambang Avip Priatna Martadiputra]]>
<![CDATA[ Jurnal Pendidikan MIPA Vol 23, No 1 (2022): Jurnal Pendidikan MIPA ]]>
Publisher : <![CDATA[University of Lampung ]]>
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<![CDATA[Abstract: This study aims to reveal the impact of the 6E Instructional 3D geometry model (6E I3DGM) design in improving students' 3D geometric thinking skills. The approach in this study uses a mixed approach. The reason for choosing this approach is that researchers want to get a more comprehensive understanding of this research problem. In this study, the participants involved in this study were (1) junior high school mathematics teachers; (2) grade VIII junior high school students in one of the public junior high schools in Indramayu Regency. In addition, there are three methods of collecting data in this study, namely observation, documentation, tests, which were analyzed using qualitative and quantitative data analysis. Qualitative data analysis using Miles and Huberman (2014) modification consists of data collection, data reduction (data reduction), data display (data display), and conclusion drawing (verification). The statistical test used in this study used an independent t-test. The results of this study conclude that the 6E I3DGM design can improve students' 3D geometric thinking skills. This is because students (1) can activate students' prior knowledge; (2) can relate previous knowledge with prior knowledge; (3) can explore 3D geometry problems; (4) can facilitate the process of constructing new concepts of 3D geometry into students' memory; (5) able to elaborate 3D geometry knowledge acquired in other contexts; (6) can evaluate the acquired knowledge in order that the 3D geometry knowledge possessed by students is stored in cognitive structures for a long period of time.Keywords: 6E instructional 3D geometry model, 3D geometry thinking skills, junior high school students. DOI: http://dx.doi.org/10.23960/jpmipa/v23i1.pp45-56]]>
<![CDATA[THE TEACHERS’ EXPERIENCE BACKGROUND AND THEIR PROFESIONALISM ]]>
<![CDATA[Yulyanti Harisman]]>;
<![CDATA[Yaya Sukjaya Kusumah]]>;
<![CDATA[Kusnandi Kusnandi]]>;
<![CDATA[Muchamad Subali Noto]]>
<![CDATA[ Jurnal Infinity Vol 8, No 2 (2019): Volume 8 Number 2, Infinity ]]>
Publisher : <![CDATA[IKIP Siliwangi and I-MES ]]>
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DOI: 10.22460/infinity.v8i2.p129-142
<![CDATA[Based on literature review Three categories of teachers are: good, very good, and excellent which are viewed from aspects of beliefs, attitude, depth of pedagogical and didactic aspects, and teacher reflection in the learning process has been obtained in previous studies. Various external aspects are considered to affect teacher professionalism in learning about mathematical problem solving. These aspects need to be studied to maximize the teacher professionalism. This study will examine these external aspects, ranging from teaching experience, educational background, and experience in participating in training to improve teacher competencies. This type of qualitative research with survey methods was chosen as a research method. Three teachers from three junior high schools with different clusters were selected as research subjects. Each teacher is given short questions related to this. The results obtained are the experiences of the trainings that teachers follow in increasing their competence and teacher's educational background have more significant influence on teacher professionalism compared to the experience or length of teacher teaching.]]>
<![CDATA[The Achievement of Middle School Students’ Mathematical Problem Solving Abilities through Project-Based Learning Models ]]>
<![CDATA[Dahlia Fisher]]>;
<![CDATA[Yaya Sukjaya Kusumah]]>;
<![CDATA[Jarnawi Afgani Dahlan]]>
<![CDATA[ Al-Jabar: Jurnal Pendidikan Matematika Vol 12, No 1 (2021): Al-Jabar: Jurnal Pendidikan Matematika ]]>
Publisher : <![CDATA[Universitas Islam Raden Intan Lampung, INDONESIA ]]>
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DOI: 10.24042/ajpm.v12i1.8858
<![CDATA[This research aims to determine the use of project-based learning (PjBL) in the achievement of students' mathematical problem-solving abilities. The variables in this research were PjBL and mathematical problem-solving abilities. The instrument in this research was a description test of mathematical problem-solving abilities, which was analyzed by testing the hypothesis using the Mann Whitney U test. The results showed that the average value of students learning using PjBL was higher than students learning using conventional models. The results of the Mann Whitney test show that learning using PjBL is effective in improving students' mathematical problem-solving abilities.]]>
<![CDATA[Critical Thinking: How is it Developed with the Experiential Learning Model in Junior High School Students? ]]>
<![CDATA[Anik Yuliani]]>;
<![CDATA[Yaya Sukjaya Kusumah]]>;
<![CDATA[Jarnawi Afghani Dahlan]]>
<![CDATA[ Al-Jabar: Jurnal Pendidikan Matematika Vol 12, No 1 (2021): Al-Jabar: Jurnal Pendidikan Matematika ]]>
Publisher : <![CDATA[Universitas Islam Raden Intan Lampung, INDONESIA ]]>
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DOI: 10.24042/ajpm.v12i1.8857
<![CDATA[This research aims to determine whether the achievement and improvement of mathematical critical thinking abilities of junior high school students who get the experiential learning model is better than those who get conventional learning and to find out which indicators of critical thinking abilities that junior high school students find difficult. This research is a quantitative research with a quasi-experimental research type. The design in this research was the randomized pretest-posttest control group design. The instrument used in this research is a set of tests to describe the mathematical critical thinking ability with a system of two-variable linear equations. The analysis used in this research using the t test, with a one-party hypothesis. Post-test data is used to see the achievement of mathematical critical thinking abilities and N-gain data to see the improvement. The conclusion in this research is the achievement and improvement of mathematical critical thinking abilities of students who receive experiential learning is better than the mathematical critical thinking abilities of students who receive conventional learning. There is aspect that students find difficult, namely the advanced clarification aspect. ]]>
<![CDATA[KEMAMPUAN PEMECAHAN MASALAH DAN KEMANDIRIAN BELAJAR MENGGUNAKAN PENDEKATAN STEM BERBASIS LESSON STUDY FOR LEARNING COMMUNITY ]]>
<![CDATA[Andini Dwi Rachmawati]]>;
<![CDATA[Yaya Sukjaya Kusumah]]>;
<![CDATA[Dadang Juandi]]>
<![CDATA[ AKSIOMA: Jurnal Program Studi Pendidikan Matematika Vol 10, No 4 (2021) ]]>
Publisher : <![CDATA[UNIVERSITAS MUHAMMADIYAH METRO ]]>
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DOI: 10.24127/ajpm.v10i4.4416
<![CDATA[Abstrak Penelitian ini bertujuan untuk mendeskripsikan kemampuan pemecahan masalah dan kemandriain belajar dengan pendekatan STEM berbasis LSLC (Lesson Study for Learning Community). Subyek penelitian adalah enam peserta didik kelas VII SMPN 1 Ngunut. Pemilihan subyek peserta didik berdasarkan angket kemandirain belajar. Penelitian ini tergolong penelitian kualitatif . Teknik pengumpulan data pada penelitian terdiri dari beberapa tahapan yaitu lembar observasi, angket kemandirian belajar, dan tes kemampuan pemecahan masalah matematika. Analisis data yang diigunakan pada penelitian ini yaitu dengan pengumpulan data, penyajian data, dan verifikasi data. Hasil penelitian ini menunjukkan bahwa aktivitas belajar peserta didik mengalami peningkatan. setiap pertemuan. Perkembangan tersebut dapat ditunjukkan dengan kemampuan pemecahan masalah dengan kemandirian belajar tinggi, mampu menyelesaikan masalah menggunakan empat tahap. Hanya tiga indikator yang dapat dicapai oleh peserta didik yang memiliki kemapuan pemecahan masalah matematika dengan kemandirian belajar sedang Sedangkan peserta didik dengan kemampuan pemecahan masalah matematika dengan kemandirian belajar rendah hanya memenuhi satu indikator saja.Kata kunci: Kemampuan pemecahan masalah; kemandiran belajaran; LSLC pendekatan STEM; Abstract This study aims to describe problem solving skills and independent learning with a STEM approach based on LSLC (Lesson Study for Learning Community). The research subjects were six seventh grade students of SMPN 1 Ngunut. The selection of students' subjects was based on a self-learning questionnaire. This research is classified as qualitative research . The data collection technique in the study consisted of several stages, namely observation sheets, learning independence questionnaires, and mathematical problem solving ability tests. Data analysis used in this study is data collection, data presentation, and data verification. The results of this study indicate that the learning activities of students have increased. every meeting. This development can be shown by problem solving skills with high learning independence, able to solve problems using four stages. Only three indicators can be achieved by students who have mathematical problem solving abilities with moderate learning independence. Meanwhile, students with mathematical problem solving abilities with low learning independence only meet one indicator.Keywords: Problem solving ability, LSLC, learning independence, STEM approach ]]>
<![CDATA[Spatial Reasoning: A Survey on the 8th Grader Students' Gain in Online Learning ]]>
<![CDATA[Harina Fitriyani]]>;
<![CDATA[Yaya Sukjaya Kusumah]]>;
<![CDATA[Turmudi Turmudi]]>
<![CDATA[ International Journal on Emerging Mathematics Education IJEME, Vol. 5 No. 1, March 2021 ]]>
Publisher : <![CDATA[Universitas Ahmad Dahlan ]]>
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DOI: 10.12928/ijeme.v5i1.20140
<![CDATA[Coronaviruses disease (Covid-19) pandemic forces schools to implement schools from home through online learning. This study aims to describe online mathematics learning, examine differences in aspects of spatial reasoning, and spatial reasoning based on gender. We conducted a survey method on 140 participants in one private junior high school in Yogyakarta. Data collection using an spatial reasoning test via Google Form consist of nine questions and direct interview with a teacher through video conference. Data analysis uses descriptive and inferential statistics. The results showed that online mathematics learning using the Google Form platform can assist students with limited facilities in learning process. The research finding showed no difference in spatial reasoning ability between male and female students, including in each aspect of spatial reasoning. In addition, other findings indicate that the aspect of spatial reasoning that students master the most is spatial visualization, while the aspect of spatial reasoning that is the least mastered by students is spatial relations.]]>
<![CDATA[The Effect of Realistic Mathematics Approach on Mathematics Learning Outcomes of Junior High School 6 Pekanbaru ]]>
<![CDATA[Astri Wahyuni]]>;
<![CDATA[Yaya Sukjaya Kusumah]]>;
<![CDATA[Surgawi Pertiwi]]>
<![CDATA[ Jurnal Cendekia : Jurnal Pendidikan Matematika Vol 5 No 3 (2021): Volume 5 Nomor 3 Tahun 2021 ]]>
Publisher : <![CDATA[Mathematics Education Study Program ]]>
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DOI: 10.31004/cendekia.v5i3.1021
<![CDATA[The purpose of this study was to determine the effect of Realistic Mathematics Approach on the learning outcomes of seventh grade students of Junior High School 6 Pekanbaru with quasi-experimental. There are two classes that will be sampled, namely the experimental and control classes with purposive sampling as a data collection technique. The data collection method used is a test with descriptive and inferential statistical data analysis techniques. Descriptive statistical analysis technique was used to describe the power obtained from the measurement results of the dependent variable, namely learning outcomes, inferential statistical analysis techniques were used to analyze sample data (pre-test and post-test). The results of descriptive statistical analysis showed that the average pre-test for the experimental and control classes were 50.10 and 54.31, while the post-test averages for the experimental and control classes were 76.79 and 68.13. In this study, the data were normally distributed, with a homogeneity value of 0.752 and when tested t the result was 0.002 < 0.05, so it can be concluded that there is an effect of realistic mathematics approach on student learning outcomes.The purpose of this study was to determine the effect of Realistic Mathematics Approach on the learning outcomes of seventh grade students of Junior High School 6 Pekanbaru with quasi-experimental. There are two classes that will be sampled, namely the experimental and control classes with purposive sampling as a data collection technique. The data collection method used is a test with descriptive and inferential statistical data analysis techniques. Descriptive statistical analysis technique was used to describe the power obtained from the measurement results of the dependent variable, namely learning outcomes, inferential statistical analysis techniques were used to analyze sample data (pre-test and post-test). The results of descriptive statistical analysis showed that the average pre-test for the experimental and control classes were 50.10 and 54.31, while the post-test averages for the experimental and control classes were 76.79 and 68.13. In this study, the data were normally distributed, with a homogeneity value of 0.752 and when tested t the result was 0.002 < 0.05, so it can be concluded that there is an effect of realistic mathematics approach on student learning outcomes.]]>
<![CDATA[Peningkatan Kemampuan Pemecahan Masalah Matematis Siswa SMP Melalui Pembelajaran Group Investigation Berbantuan Proyek ]]>
<![CDATA[Wiwit Damayanti Lestari]]>;
<![CDATA[Yaya Sukjaya Kusumah]]>;
<![CDATA[Stanley Dewanto]]>
<![CDATA[ IndoMath: Indonesia Mathematics Education Vol 2 No 1 (2019) ]]>
Publisher : <![CDATA[Universitas Sarjanawiyata Tamansiswa ]]>
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DOI: 10.30738/indomath.v2i1.2616
<![CDATA[The purpose of this study is to examine the differences in the improvement of students' mathematical problem-solving abilities in the classroom with investigation group learning assisted by projects and conventional learning classes. This study included quasi-experimental research with a non-equivalent control group research design. All mathematical problem-solving abilities of class VII students in one of the junior high Schools were the population in this study. Two classes were taken as samples, namely the experimental class applying the project-assisted investigation group and the control class that applied conventional learning. The question of mathematical problem-solving ability was used as an instrument in this study. Data on mathematical problem-solving ability from pretest and posttest then determined normalized gain average between two classes and analyzed using t-test. The results showed that the improvement of students' mathematical problem-solving abilities in the class applying project-assisted group learning was better than students in the class applying conventional learning, but the average increase in the two classes was in the moderate classification. So that project-assisted investigation group learning can be used as an alternative to improve the students' mathematical problem-solving skills in junior high school.]]>
<![CDATA[ENHANCING MATEMATICAL COMMUNICATION AND DISPOSITION ABILITIES THROUGH MODEL-ELICITING ACTIVITIES (MEAs) LEARNING ]]>
<![CDATA[Yani Siti Tuadah Afriani]]>;
<![CDATA[Siti Fatimah]]>;
<![CDATA[Yaya Sukjaya Kusumah]]>
<![CDATA[ Jurnal Pengajaran MIPA Vol 22, No 1 (2017): JPMIPA: Volume 22, Issue 1, 2017 ]]>
Publisher : <![CDATA[Faculty of Mathematics and Science Education, Universitas Pendidikan Indonesia ]]>
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DOI: 10.18269/jpmipa.v22i1.8375
<![CDATA[The purpose of this study is to analyze the enhancement mathematical communication ability and the achievement mathematical disposition of junior high school students under Model-Eliciting Activities (MEAs) learning. This study was a quasi-eperimental in one of the junior high schools in Bandung, with the design of non-equivalent control group involving 80 students of grade VII. The instrument used for measuring students ability was a test on mathematical communication, whereas for measuring their mathematical disposition, a questionaire was used . The statistical analysis performed were Mann-Whitney test, and one way ANOVA test. The research results obtained are: (1) the enhancement the students mathematical communication abilities who work under Model-Eliting Activities (MEAs) learning is better than the students who work under conventional learning, (2) there are differences in the improvement in mathematical communication ability between students who have mathematical prior knowledge (KAM) high, midlle, low, (3) the students achievement in mathematical disposition who work under Model-Eliciting Activities (MEAs) learning is better than those who work under conventional learning.]]>
<![CDATA[PENGEMBANGAN LEMBAR KERJA PESERTA DIDIK MATERI PECAHAN BERBASIS ANDROID ]]>
<![CDATA[Ratni Purwasih]]>;
<![CDATA[Yaya Sukjaya Kusumah]]>
<![CDATA[ AKSIOMA: Jurnal Program Studi Pendidikan Matematika Vol 11, No 2 (2022) ]]>
Publisher : <![CDATA[UNIVERSITAS MUHAMMADIYAH METRO ]]>
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DOI: 10.24127/ajpm.v11i2.4713
<![CDATA[Tujuan penelitian adalah pengembangan lembar kerja peserta didik (LKPD) pada materi pecahan berbantuan powerpoint I-spring berbasis android yang valid dan praktis. Metode yang digunakan untuk mengembangkan bahan ajar tersebut adalah penelitian research and development (R&D) dengan model plomp yang meliputi langkah-langkah yaitu 1) fase investigasi awal (preliminary research), 2) fase design/perancangan; 3) fase realisasi/konstruksi; 4) fase tes, evaluasi dan revisi; dan 5) fase implementasi. Penelitian ini tidak sampai pada tahap implementasi karena waktu yang tidak memungkinkan. Instrumen dalam penelitian ini adalah lembar angket validasi, angket respon guru dan angket respon peserta didik. Data penelitian meliputi hasil angket validasi media pembelajaran berbantuan powerpoint I-spring berbasis android oleh para ahli (materi dan media) dan hasil angket praktikalitas oleh peserta didik dan guru kelas. Angket respon guru dan siswa untuk mengukur bagaimana respon guru dan siswa terhadap media yang dikembangkan. Kelayakan media ini dilihat berdasarkan analisis dari lembar validasi dan angket. Hasil penelitian dapat disimpulkan bahwa media ini dinyatakan valid dan sangat praktis dengan perolehan nilai sebesar 96,03%. Artinya LKPD berbantuan powerpoint I-spring berbasis android dapat diimplementasikan pada pengguna sebagai alternatif pembelajaran pada konsep pecahanThe research objective is the development of student worksheets (LKPD) on valid and practical I-spring-assisted powerpoint-assisted fractions material on Android. The method used to develop the teaching materials is research and development (R&D) with a plomp model which includes steps, namely 1) preliminary research phase, 2) design phase; 3) realization/construction phase; 4) test, evaluation and revision phases; and 5) implementation phase. This research did not reach the implementation stage due to time constraints. The instruments in this study were a validation questionnaire sheet, a teacher response questionnaire and a student response questionnaire. The research data are the results of a questionnaire validation of learning media assisted by powerpoint I-spring based on Android by experts (materials and media) and the results of practicality questionnaires by students and classroom teachers. Teacher and student response questionnaire to measure how teachers and students respond to the developed media. The feasibility of this media is seen based on the analysis of the validation sheet and questionnaire. The results of the study can be concluded that this media is declared valid and very practical with a score of 96.03%. This means that the LKPD assisted by powerpoint I-spring based on Android can be implemented by users as an alternative to learning the concept of fractions]]>
