Andika Setyo Budi Lestari
Program Studi Pendidikan Matematika, Universitas PGRI Wiranegara, Pasuruan, Indonesia

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APLIKASI INTEGRAL UNTUK MEMBUKTIKAN RUMUS KELILING LINGKARAN Ayyidatul Imaniyah; Keto Susanto; Andika Setyo Budi Lestari
Euler : Jurnal Ilmiah Matematika, Sains dan Teknologi EULER: Volume 9 Issue 1 June 2021
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/euler.v9i1.10486

Abstract

Integral can be used to determine several quantities, one of them is to determine the length of a curve in the plane. It can be applied to prove the circumference formula of a circle. This research aims to explain how to prove the circumference formula of a circle using a single integral expressed in both cartesian and polar coordinates. The method used in this research is a study of literature. The result of this research shows that proving the circumference of a circle can be done by determining the implicit derivative of the circle equation. Then, the circle equation and its implicit derivative are substituted into the integral formula for determining the length of the curve in both cartesian and polar coordinates so that the circumference formula of a circle is obtained.
DEFRAGMENTİNG STUDENTS' THİNKİNG STRUCTURE İN SOLVİNG MATHEMATİCAL ARGUMENTS Nonik Indrawatiningsih; Andika Setyo Budi Lestari
AKSIOMA: Jurnal Program Studi Pendidikan Matematika Vol 11, No 3 (2022)
Publisher : UNIVERSITAS MUHAMMADIYAH METRO

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (798.459 KB) | DOI: 10.24127/ajpm.v11i3.5061

Abstract

The structure of thinking is a representation of the thought process in the form of a problem-solving flow that is carried out by a person when he resolves a problem. many students make mistakes in solving problems. One way that can be done to overcome these errors is to defragment the structure of thought. This study aims to describe the students’ erroneous thinking structure in solving mathematical argument and the defragmenting efforts. The students of 10th Grade of high school in Pasuruan, East Java, Indonesia, were involved as research subjects. They were selected based on three criteria, namely low, moderate and high level of procedural error. The activity of ‘think out loud’ was used to observe the errors made by students in solving mathematical argument. The data obtained from this activity were codified and later used as a basis to perform the defragmenting process. Based on the findings of this study, it can be concluded that procedural errors in solving mathematical argument are in the form of error in determining the value of x from an equation, modeling an argument, and proving a valid argument. Defragmenting was done using scaffolding approach to improve students' thinking structure in solving mathematical problems
Apakah Keaktifan Siswa Dapat Ditingkatkan Melalu Pembelajaran Kooperatif Dengan Metode Guided Discovery Learning ? Andika Setyo Budi Lestari; Siti Aisah
International Journal of Progressive Mathematics Education Vol. 2 No. 1 (2022)
Publisher : Universitas Muhammadiyah Prof. DR. HAMKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22236/ijopme.v2i1.8847

Abstract

Hasil observasi yang dilakukan peneliti pada hari Selasa, tanggal 17 Februari 2015 menunjukkan sebagian besar siswa kurang aktif ini terlihat dari hasil observasi penilaian keaktifan belajar siswa sebelum dilakukan penelitian mencapai 20% dari 25 siswa. Hal ini yang mendorong peneliti untuk melakukan penelitian dalam hal meningkatkan keaktifan belajar siswa khususnya pada materi dimensi dua. Penelitian ini bertujuan untuk mendeskripsikan langkah-langkah pembelajaran yang dapat meningkatkan keaktifan belajar siswa kelas XI SMK Al-Amien Wonorejo melalui pembelajaran kooperatif dengan metode guided discovery learning. Penelitian ini merupakan penelitian tindakan kelas yang terdiri dari dua siklus. Masing-masing siklus terdiri dari empat tahap, yaitu (1) tahap perencanaan; (2) tahap tindakan; (3) tahap pengamatan (observasi); dan (4) tahap refleksi. Hasil penelitian tindakan kelas ini menunjukkan bahwa keaktifan belajar siswa pada siklus 1 belum memenuhi kriteria yang ditentukan oleh peneliti, yaitu banyaknya siswa yang aktif adalah 75% dari seluruh siswa. Persentase keaktifan belajar siswa pada pertemuan ke-1 sebanyak 48% dan pada pertemuan 2 sebanyak 64%. Setelah dilakukan perbaikan pada siklus 2, persentase keaktifan belajar siswa meningkat menjadi 80% pada pertemuan ke-1 dan 88% pada pertemuan ke-2. Berdasarkan hasil penelitian ini, dapat disimpulkan bahwa penerapan pembelajaran kooperatif dengan metode guided discovery learning dapat meningkatkan keaktifan belajar siswa kelas XI SMK Al-Amien Wonorejo.
PELATIHAN PENULISAN KARYA ILMIAH UNTUK MAHASIWA CALON GURU MATEMATIKA DI UNIVERSITAS PGRI WIRANEGARA PASURUAN Andika Setyo Budi Lestari Lestari; Nonik Indrawatiningsih
Jurnal Pemantik Vol. 1 No. 2 (2022): Juli-Desember
Publisher : Rafandha Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (163.965 KB) | DOI: 10.56587/pemantik.v1i2.35

Abstract

Karya ilmiah merupakan salah satu wujud nyata kemampuan literasi yang dimiliki oleh mahasiswa. Karya ilmiah mahasiswa secara umum berupa tugas akhir atau skripsi. Berdasarkan temuan ketika melakukan pembimbingan skripsi sebagian mahasiswa masih memiliki kualitas yang rendah dalam hal penulisan skripsi. Hal ini nampak dari sumber rujukan yang digunakan, beberapa mahasiswa masih copy paste dari penelitian yang sebelumnya. Cara penulisan rujukan mahasiswa sebagian besar masih secara manual. Judul-judul penelitian yang digunakan oleh mahasiswa cenderung sama dengan penelitian sebelumnya hanya mengubah subjek penelitiannya saja. Oleh karena itu diperlukan kegiatan pelatihan penulisan karya ilmiah untuk mahasiswa calon guru di Universitas PGRI Wiranegara Pasuruan. Hasil dari kegiatan pengabdian berupa pelatihan penulisan karya ilmiah untuk mahasiswa calon guru di Universitas PGRI Wiranegara Pasuruan adalah mahasiswa mampu menuliskan rujukan dan memunculkan ide judul penelitian. Kegiatan pelatihan penulisan Karya Ilmiah untuk calon guru Matematika di Universitas PGRI Wiranegara Pasuruan dapat disimpulkan berhasil. Hal ini ditunjukkan oleh antusiasnya peserta pelatihan yang diikuti oleh 95% persen mahasiswa calon guru matematika di Universitas PGRI Wiranegara. Selain itu beberpa mahasiswa yang bergabung dalam LRM (Lembaga Riset Mahasiswa) telah mengikuti lomba tingkat Nasional dan berhasil lolos.
Apakah Keaktifan Siswa Dapat Ditingkatkan Melalu Pembelajaran Kooperatif Dengan Metode Guided Discovery Learning ? Andika Setyo Budi Lestari; Siti Aisah; Supriyo; muhammad aufin
International Journal of Progressive Mathematics Education Vol. 2 No. 1 (2022)
Publisher : Universitas Muhammadiyah Prof. DR. HAMKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22236/ijopme.v2i1.8847

Abstract

The results of observations made by researchers on Tuesday, February 17 2015 showed that most of the students were less active. This can be seen from the results of observations on the assessment of student learning activeness prior to the research reaching 20% of the 25 students. This is what encourages researchers to conduct research in terms of increasing the activeness of student learning, especially in the two-dimensional material. This study aims to describe learning steps that can increase the learning activity of class XI students at SMK Al-Amien Wonorejo through cooperative learning using the guided discovery learning method. This research is a classroom action research which consists of two cycles. Each cycle consists of four stages, namely (1) the planning stage; (2) action stage; (3) the observation stage (observation); and (4) the reflection stage. The results of this class action research showed that the activeness of student learning in cycle 1 did not meet the criteria determined by the researcher, namely the number of students who were active was 75% of all students. The percentage of student learning activeness at the 1st meeting was 48% and 64% at the 2nd meeting. After the improvement in cycle 2, the percentage of student learning activity increased to 80% at the 1st meeting and 88% at the 2nd meeting. Based on the results of this study, it can be concluded that the application of cooperative learning with the guided discovery learning method can increase the learning activity of class XI students at SMK Al-Amien Wonorejo.   Hasil observasi yang dilakukan peneliti pada hari Selasa, tanggal 17 Februari 2015 menunjukkan sebagian besar siswa kurang aktif ini terlihat dari hasil observasi penilaian keaktifan belajar siswa sebelum dilakukan penelitian mencapai 20% dari 25 siswa. Hal ini yang mendorong peneliti untuk melakukan penelitian dalam hal meningkatkan keaktifan belajar siswa khususnya pada materi dimensi dua. Penelitian ini bertujuan untuk mendeskripsikan langkah-langkah pembelajaran yang dapat meningkatkan keaktifan belajar siswa kelas XI SMK Al-Amien Wonorejo melalui pembelajaran kooperatif dengan metode guided discovery learning. Penelitian ini merupakan penelitian tindakan kelas yang terdiri dari dua siklus. Masing-masing siklus terdiri dari empat tahap, yaitu (1) tahap perencanaan; (2) tahap tindakan; (3) tahap pengamatan (observasi); dan (4) tahap refleksi. Hasil penelitian tindakan kelas ini menunjukkan bahwa keaktifan belajar siswa pada siklus 1 belum memenuhi kriteria yang ditentukan oleh peneliti, yaitu banyaknya siswa yang aktif adalah 75% dari seluruh siswa. Persentase keaktifan belajar siswa pada pertemuan ke-1 sebanyak 48% dan pada pertemuan 2 sebanyak 64%. Setelah dilakukan perbaikan pada siklus 2, persentase keaktifan belajar siswa meningkat menjadi 80% pada pertemuan ke-1 dan 88% pada pertemuan ke-2. Berdasarkan hasil penelitian ini, dapat disimpulkan bahwa penerapan pembelajaran kooperatif dengan metode guided discovery learning dapat meningkatkan keaktifan belajar siswa kelas XI SMK Al-Amien Wonorejo.
Lesson Study: Pembelajaran Berdiferensiasi Pasca Pandemi Covid-19 Andika Setyo Budi Lestari Lestari
Global Education Journal Vol. 1 No. 3 (2023): Global Education Journal (GEJ)
Publisher : Civiliza Publishing, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (431.449 KB)

Abstract

The Covid-19 pandemic hit almost all parts of the world, including Indonesia. It has been nearly two years since the pandemic hit, impacting various sectors, including education. During the pandemic, learning was carried out online and felt less effective. Various government efforts have been made for faster recovery, especially in education. One of the government's efforts is through the KDS program (Lecturer-Teacher Partnership in Schools) through Lesson Study activities. This study aims to see the implementation of a Lesson Study carried out together with junior high school teachers in partner schools. Through KDS (Lecturer-Teacher Partnership in School) activities by implementing Lesson study, compiling, and implementing differentiated learning. The research method used is the descriptive qualitative method. The subjects of this research were students of SMP Yadika Bangil. Lesson Study stages, namely planning (Plan), implementation (Do), and reflection (See), carried out with lecturers as facilitators and teachers in partner schools as model teachers and observers, have been carried out properly by Lesson Study guidelines and the learning objectives can be archieved planned. The results of research conducted through Lesson Studies led by teachers at school by implementing differentiated learning of student learning outcomes are mostly complete.
Analisis Commognitive Matematis Siswa dalam Menyelesaikan Soal Cerita Secara Berpasangan Andika Setyo Budi Lestari Lestari; Ani Afifah; Supriyo
Jurnal Pendidikan Matematika (JPM) Vol 9 No 2 (2023): Jurnal Pendidikan Matematika (JPM)
Publisher : Pendidikan Matematika, FKIP, Universitas Islam Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33474/jpm.v9i2.20105

Abstract

Matematika merupakan salah satu pelajaran wajib yang ada di sekolah. Matematika di sekolah tidak hanya dilihat dari segi kognitif namun juga dari komunikasi matematis yang perlu adda pada siswa. Istilah yang digunakan untuk melihat kemampuan kognitif dan komunikasi matematis dikenal dengan istilah commognitif. Kemampuan matematis siswa diharapkan dapat merata sehingga salah satu cara yang bisa dilakukan adalah dengan cara dilakukan kegiatan pembelajaran secara diskusi berpasangan. Untuk melihat perubahan yang terjadi sehingga digunakan instrumen berupa soal cerita. Tujuan dari penelitian yang dilakukan adalah untuk melihat commognitive matematis siswa ketika menyelesaikan soal cerita ketika diselesaikan dengan berpasangan. Metode penelitian yang digunakan penelitian kualitatif yang mendiskripsikan hasil penelitian. Hasil penelitian ini adalah adanya perubahan commognitive matematis siswa dalam menyelesaikan soal cerita secara berpasangan. Perubahan yang terjadi adalah perubahan yang positif terhadap kemampuan matematis yang dimiliki oleh siswa
PLAN–DO–SEE: Lesson Study-Based Differentiated Learning in Middle Schools Andika Setyo Budi Lestari Lestari; Anton Wahyono; Yavuz Erdem Akkuşci; Purwanto Purwanto; Khoirul Anas; Yessi Nurmalasari; Rachma Bibi; Mohamad Yunus
Delta-Phi: Jurnal Pendidikan Matematika Vol. 1 No. 1 (2023): Delta-Phi: Jurnal Pendidikan Matematika
Publisher : CV. Bimbimbingan Belajar Assyfa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61650/dpjpm.v1i1.76

Abstract

The Covid-19 pandemic hit almost all parts of the world, including Indonesia. It has been almost two years since the pandemic hit and has had an impact on various sectors including education. During the pandemic, learning was carried out online and felt less effective. Various government efforts have been made for faster recovery, especially in education. One of the government's efforts is through the KDS program (Lecturer-Teacher Partnership in Schools) through Lesson Study activities. This study aims to see the implementation of Lesson Study carried out together with junior high school teachers in partner schools. Through KDS (Lecturer-Teacher Partnership in School) activities by implementing Lesson study, compiling and implementing differentiated learning. The research method used is descriptive qualitative method. The subjects of this research were students of SMP. Lesson Study stages, namely planning (Plan), implementation (Do), reflection (See) which are carried out with lecturers as facilitators and teachers in partner schools as model teachers and observers have been carried out properly in accordance with Lesson Study guidelines and the learning objectives can be achieved planned. The results of research conducted through Lesson Study conducted with teachers in schools by implementing differentiated learning of student learning outcomes are mostly complete
Efektivitas Model Pembelajaran Kooperatif Dengan Pendekatan Contextual Teaching and Learning (CTL) Terhadap Hasil Belajar Matematika Wiji Putri Lestari; Eka Fitria Ningsih; Choirudin C; Rahmad Sugianto; Andika Setyo Budi Lestari
Jurnal Penelitian Tindakan Kelas Vol. 1 No. 1 (2023): Jurnal Penelitian Tindakan Kelas
Publisher : CV Bimbingan Belajar Assyfa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61650/jptk.v1i1.155

Abstract

Penelitian ini bertujuan untuk melihat apakah penerapan model pembelajaran kooperatif dengan pendekatan Contextual Teaching and Learning (CTL) dapat meningkatkan hasil belajar peserta didik pada materi Aritmatika Sosial. Metode eksperimen desain One Group Pretest-Posttest Design digunakan dalam penelitian kuantitatif ini. Populasi penelitian ini adalah 55 peserta didik kelas tujuh MTs Roudhotul Ulum Seputih Mataram. Sampling probabilitas dari jenis Cluster Random Sampling adalah metode sampel yang digunakan. Kelas VII A yang berjumlah 27 peserta didik dijadikan sebagai sampel. Penelitian ini menggunakan tes dengan instrumen berupa soal uraian untuk mengumpulkan data. Uji T Sampel Berpasangan adalah metode analisis yang digunakan. Hasil uji t menunjukkan bahwa 20,53 = 1,7056, sehingga H0 ditolak. Hal ini menunjukkan bahwa model pembelajaran kooperatif dengan pendekatan Contextual Teaching and Learning (CTL) dapat meningkatkan hasil belajar matematika.
Comedian Mathematical Thinking: An Islamic Examination of Inductive, Deductive, and Analogy Approaches in the Creation of Stand-Up Comedy Material Fauzan Bayu Aji; Dewi Nurmalitasari; Andika Setyo Budi Lestari; Ilham Muhammad
Assyfa Journal of Islamic Studies Vol. 1 No. 1 (2023): Assyfa Journal of Islamic Studies
Publisher : CV. BImbingan Belajar Assyfa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61650/ajis.v1i1.149

Abstract

This study examines the thinking process of comedians in creating Stand-Up Comedy material and highlights the similarities between comedy structures and mathematical thinking. Incorporating comedy structures into classroom learning can create a fun and engaging atmosphere while effectively conveying concepts and achieving learning objectives. Stand-Up Comedy, as a solo performance, allows comedians to present their material independently (Utami, 2018). In line with an Islamic perspective, this study aims to explore how the comedian's mathematical thinking process aligns with the inductive, deductive, and analogical methods, while considering the values and principles of Islam. By analyzing the intersection of humor, mathematics, and Islamic teachings, this research seeks to provide insights into utilizing comedy techniques to enhance teaching and learning experiences, promoting an inclusive and enjoyable educational environment that respects Islamic values and objectives.