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All Journal Jurnal Penelitian dan Pengkajian Ilmu Pendidikan: e-Saintika Lumbung Inovasi: Journal of Community Service Journal of Science and Education (JSE) Griya Journal of Mathematics Education and Application Rengganis Jurnal Pengabdian Masyarakat JES-MAT (Jurnal Edukasi dan Sains Matematika) Prisma Sains: Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram

Deni Hamdani

Mathematics Education Department, Faculty Of Teacher Training And Education, Universitas Mataram. Jl. Majapahit No. 62, Mataram, West Nusa Tenggara, 83115

Author-ID : 3314227

Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Mathematics Physics Social Sciences Other

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PENGEMBANGAN LKPD BERBASIS GEOGEBRA UNTUK MENINGKATKAN PEMAHAMAN KONSEP MATEMATIKA Dwi Novitasari; Andi Trisnowali MS; Deni Hamdani; Junaidi Junaidi; Sartika Arifin
Jurnal Edukasi dan Sains Matematika (JES-MAT) Vol 7, No 1 (2021): Jurnal Edukasi dan Sains Matematika (JES-MAT)
Publisher : Department of Mathematics Education, Universitas Kuningan

Students usually have difficulties in visualizing images that are caused by the lack of students’ conceptual understanding. We need learning which is able to help the students’ conceptual construction. One of them is by using technology in learning. This study aimed to develop students’ worksheets using a scientific approach based on GeoGebra for the eleven-grade of senior high school in Mataram-Indonesia. This study type was Research and Development (RD) using Plom model. The developed product was validated by experts and tested for its practicality by mathematics teachers and students. The quality of the product refers to the validity and effectiveness of the product. The results of expert validation and field try out indicated that the developed worksheet is valid and practical. The result of the research showed that students’ worksheet is valid and effective with validation average score is 4.44 and effective. The students’ average score is 86.84% (above the minimum standard) and the average of students' responses is 87.72% (positive category). It can be concluded that the developed worksheet can be used in the classroom

Bukti yang Membuktikan dan Bukti yang Menjelaskan dalam Kelas Matematika Deni Hamdani; J. Junaidi; Dwi Novitasari; Nilza Humaira Salsabila; Ratna Yulis Tyaningsih
Jurnal Penelitian dan Pengkajian Ilmu Pendidikan: e-Saintika Vol. 4 No. 2: July 2020
Publisher : Lembaga Penelitian dan Pemberdayaan Masyarakat (LITPAM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/e-saintika.v4i2.253

Tujuan penelitian ini adalah mendeskripsikan secara komprehensif perbedaan bukti yang membuktikan dan bukti yang menjelaskan berdasarkan pertimbangan implikasi kedua bukti tersebut sebagai dasar konstruksi penalaran dan bukti dalam matematika. Kajian dijalani dengan kegiatan menguraikan perbedaan spesifik antara keduanya serta memberikan contoh kasus kedua bukti, dan memberikan justifikasi atas pentingnya pengenalan kedua bukti dalam kelas matematika. Kedua bukti digambarkan dengan permasalahan konsep barisan bilangan ganjil. Bukti yang membuktikan hanya menunjukkan dengan menggunakan induksi matematis, sementara bukti yang menjelaskan menunjukkan dengan bukti Gauss, representasi geometrik bangun titik, dan garis zig-zag. Perbedaan antara keduanya tampak pada pemberian alasan yang berasal dari bukti itu sendiri. Hasil kajian mengindikasikan bahwa peran bukti dalam kelas matematika pada tingkat perguruan tinggi adalah membuktikan/meyakinkan, pada tingkat menengah atas adalah membuktikan dan menjelaskan, dan pada tingkat sekolah menengah pertama dan dasar peran utamanya adalah menjelaskan. Akibatnya bukti matematis tidak hanya membuktikan/menyakinkan, melainkan juga menjelaskan. Karenanya penting mempertimbangkan implikasi bukti dalam kurikulum matematika di sekolah, serta perlunya menyajikan bab materi kepada mahasiswa pendidikan matematika tidak hanya bukti yang membuktikan, melainkan juga bukti yang menjelaskan.Proofs that Prove and Proofs that Explain in Mathematics ClassroomAbstractThe purpose of this study was to comprehensively describe the differences of the proofs that prove and proofs that explain based on the consideration of the implications of the two proofs as the basis for the construction reasoning and proofs in mathematics. The study was undertaken with the activity of describing the specific differences between the two and providing examples of cases of both proofs; and provide justification for the importance of introducing both proofs in mathematics classrooms. Both proofs are illustrated by the problem of the odd number sequence concept. Proofs that prove is only shown using mathematical induction, while proofs that explain shows with Gaussian proof, a geometric representation of point shape, and zigzag line. The difference between the two appears to be the reasoning that comes from the proof itself. The results of the study indicate that the role of proof in mathematics classes at the tertiary level is proving/convincing, at the senior secondary level it is proving and explaining, and at the junior and elementary school level its main role is explaining. As a result, mathematical proof does not only prove/convince, but also explain. It is therefore important to consider the implications of proof in the mathematics curriculum in schools, as well as the need to present chapter materials to mathematics education students not only proofs that prove but also proof that explain.

Penggunaan Metode Statistika untuk Menganalisis Data Evaluasi Hasil Belajar di SMP Negeri 1 Gerung Kabupaten Lombok Barat Deni Hamdani; Nyoman Sridana; Amrullah Amrullah; Hapipi Hapipi; Nourma Pramestie Wulandari
Lumbung Inovasi: Jurnal Pengabdian kepada Masyarakat Vol. 6 No. 2: November 2021
Publisher : Lembaga Penelitian dan Pemberdayaan Masyarakat (LITPAM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/linov.v6i2.548

Metode statistik membantu mengorganisasi data hasil belajar, baik itu dalam penyajian, pemusatan, dan penyebaran data. Selain membantu membuat keputusan yang tepat, pemahaman statistik merupakan dasar untuk membangun keahlian berpikir. Tujuan dalam pengabdian ini adalah sosialisasi penggunaan metode statistika untuk menganalisis data evaluasi hasil belajar siswa, Metode pelaksanaan yang digunakan adalah Focus Group Discussion (FGD) dan dilanjutkan dengan pelatihan penggunaan metode statistik secara daring melalui platform google meeting, dan diakhiri dengan evaluasi hasil kegiatan. Hasil pengabdian ini menunjukkan bahwa pelatihan secara daring dan evaluasi hasil kegiatan guru yang didasarkan pada focus group discussion (FGD) mengungkapkan bahwa kinerja guru dalam menggunakan metode statistika untuk analisis data evaluasi hasil belajar siswa terkategori mampu memahami dan mampu membuat alat evaluasi sederhana baik itu berbasis excel dan google form. Sehingga dari kegiatan ini, telah memberikan kesempatan unik para guru dalam memahami statistik pada tingkat konseptual tanpa terlalu terjebak dalam persamaan dan rumus. Use of Statistical Methods to Analyze Learning Outcome Evaluation Data at SMPN 1 Gerung, West Lombok Regency Statistical methods help organize data on learning outcomes, both in presenting, centralizing, and disseminating data. In addition to helping make the right decisions, understanding statistics is the basis for building thinking skills. The purpose of this service is to socialize the use of statistical methods to analyze student learning outcomes evaluation data. The implementation method used is focus group discussion (FGD) and is followed by training on the use of statistical methods online through the google meeting platform, and ends with an evaluation of the results of activities. The results of this service show that online training and evaluation of the results of teacher activities based on focus group discussions (FGD) reveal that teacher performance in using statistical methods for data analysis of student learning outcomes evaluation is categorized as being able to understand and be able to make simple evaluation tools both excel-based and google forms. Thus, this activity has provided teachers with a unique opportunity to understand statistics at a conceptual level without getting too caught up in equations and formulas.

Pemberian scaffolding terhadap berpikir pseudo penalaran siswa dalam mengkonstruksi grafik fungsi Ratna Yulis Tyaningsih; Dwi Novitasari; Deni Hamdani; Aprilia Dwi Handayani; Samijo Samijo
Journal of Science and Education (JSE) Vol. 1 No. 1 (2020): Journal of Science and Education (JSE)
Publisher : CV Rezki Media

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56003/jse.v1i1.9

Struktur berpikir pseudo merupakan struktur berpikir semu yang dialami siswa ketika memecahkan suatu masalah, dimana siswa tidak mengetahui letak kesalahan yang dilakukan. Siswa diberikan masalah berupa soal mengkonstruksi grafik fungsi eksponensial dan logaritma. Beberapa penyebab terjadinya proses berpikir pseudo siswa ketika mengkonstruksi grafik fungsi eksponensial dan logaritma adalah adalah (1) salah satu langkah proses penyelesaian diabaikan siswa, (2) tergesa-gesa ketika menghitung atau menggambar, (3) tidak bisa mengaitkan konsep satu dengan yang lain, (4) kurang memahami materi prasyarat, dan (5) tidak melakukan aktivitas refleksi. Penelitian ini bertujuan untuk mendeskripsikan bentuk pemberian scaffolding terhadap struktur berpikir pseudo siswa dalam mengkonstruksi grafik fungsi eksponensial dan logaritma. Subjek penelitian ini terdiri dari 2 siswa dengan kemampuan matematika sedang dan rendah. Pengumpulan data dilakukan dengan memberikan tes dan wawancara untuk mengetahui proses berpikir pseudo siswa ketika mengkonstruksi grafik fungsi eksponensial dan logaritma. Dalam penerapan scaffolding, alat bantu yang digunakan adalah Geogebra. Hasil penelitian ini menunjukkan bahwa proses scaffolding akan berhasil jika siswa memiliki kemauan untuk memperbaiki kesalahan sampai diperoleh jawaban yang benar. Pemberian scaffolding dimulai dari level 1 environmental provisions yaitu pemberian stimulus berupa masalah dengan alat bantu visualisasi, level 2 explaining, reviewing, and restructuring yaitu penjelasan rumusan masalah dan proses review. Pada level 3 developing conceptual thinking, yaitu tanya jawab hal-hal yang bersifat konseptual.

Subahnale dan Rang-rang Pembelajaran Matematika SMP Junaidi Junaidi; Nourma Pramestie Wulandari; Deni Hamdani
Griya Journal of Mathematics Education and Application Vol. 1 No. 4 (2021): Desember 2021
Publisher : Pendidikan Matematika FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/griya.v1i4.102

The purpose of this research is to find mathematical concepts in the cultural heritage of songket cloth and how to apply them as a medium for learning mathematics in junior high schools. The results of this study can be used as a reference for junior high school teachers to choose culture-based learning media related to student life, especially in Lombok. This research is an ethnomathematical research with the research method used is a qualitative research method with an ethnographic approach. The research was conducted in September, October, and November 2021 in Sukarara village, Lombok, West Nusa Tenggara. The subjects in this study were craft works in the form of songket cloth and songket weavers who were active in the village of Sukarara which consisted of three weavers. Data were collected by documentation, document observation, and interviews. The documents obtained were then analyzed related to the content of the mathematical concepts contained therein. The conclusion of this study is that the quality of mathematics learning can be improved by using the traditional songket subahnale cloth as a medium or learning aid. Some mathematical concepts that can be learned with songket subahnale as the medium are congruence, similarity, perimeter of flat shapes, area of flat shapes, folding symmetry, comparisons, pattern tracing. Songket fabrics that can be used as media are songket subahnale woven fabrics with geometric motifs such as diamond motifs, rang-rang motifs, and hexagons

Sosialisasi Aplikasi Statistika Pada Evaluasi Hasil Belajar Siswa Berbantuan Microsoft Excel Pada Guru SMPN 1 Gerung Nyoman Sridana; Amrullah Amrullah; Hapipi Hapipi; Deni Hamdani; Nourma Pramestie Wulandari
Rengganis Jurnal Pengabdian Masyarakat Vol. 1 No. 2 (2021): November 2021
Publisher : Pendidikan Matematika, FKIP Universitas Mataram

This service is based on the competency standard of statistical knowledge and the evaluation of teachers is still low, so socialization is needed to teachers regarding the application of statistics to analyze data on evaluating students’ learning outcomes. Professional teachers should always try to improve their knowledge in the field of teaching matherials and pedagogics. The method used in this service activity is mentoring offline and online (including lectures, question-and-answer, assigntments, and presentations method). This service activity is arranged in four stages, where one stage is carried out online and three stages are carried out online. Offline activities are carried out using lecture and question-and-answer methods, while onine activities are carried out with FGD, question-and-answer, and presentations method. The expected output of this service activity is that the teachers are proficient in using statistical application programs in analyzing valid and significant evaluation data of students’ learning outcomes.

Exploration of Student Thinking Process in Proving Mathematical Statements Deni Hamdani; Ketut Sarjana; Ratna Yulis Tyaningsih; Ulfa Lu’luilmaknun; J. Junaidi
Prisma Sains : Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram Vol 8, No 2: December 2020
Publisher : IKIP Mataram

A mathematical statement is not a theorem until it has been carefully derived from previously proven axioms, definitions and theorems. The proof of a theorem is a logical argument that is given deductively and is often interpreted as a justification for statements as well as a fundamental part of the mathematical thinking process. Studying the proof can help decide if and why our answers are logical, develop the habit of arguing, and make investigating an integral part of any problem solving. However, not a few students have difficulty learning it. So it is necessary to explore the student's thought process in proving a statement through questions, answer sheets, and interviews. The ability to prove is explored through 4 (four) proof schemes, namely Scheme of Complete Proof, Scheme of Incomplete Proof, Scheme of unrelated proof, and Scheme of Proof is immature. The results obtained indicate that the ability to prove is influenced by understanding and the ability to see that new theorems are built on previous definitions, properties and theorems; and how to present proof and how students engage with proof. Suggestions in this research are to change the way proof is presented, and to change the way students are involved in proof; improve understanding through routine proving new mathematical statements; and developing course designs that can turn proving activities into routine activities.

Co-Authors Amrullah Amrullah Aprilia Dwi Handayani Dwi Novitasari Hapipi Hapipi J. Junaidi Junaidi Junaidi Ketut Sarjana Nyoman Sridana Salsabila, Nilza Humaira Samijo, Samijo Trisnowali MS, Andi Ulfa Lu’luilmaknun Wulandari, Nourma Pramestie Yulis Tyaningsih, Ratna

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