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All Journal JURNAL PENDIDIKAN TAMBUSAI Kognitif: Jurnal Riset HOTS Pendidikan Matematika Indo-MathEdu Intellectuals Journal
Lubis, Mindo Juliani Kelly
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Computer Science & IT Education Library & Information Science Mathematics Social Sciences Other

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Upaya Meningkatkan Kemampuan Koneksi Matematis Siswa Melalui Model Pembelajaran Problem Based Learning (PBL) Hasibuan, Khoirunnisa; Dachi, Surya Wisada; Lubis, Mindo Juliani Kelly
Kognitif: Jurnal Riset HOTS Pendidikan Matematika Vol. 4 No. 3 (2024): Juli - September 2024 (In Progress)
Publisher : Education and Talent Development Center Indonesia (ETDC Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51574/kognitif.v4i3.2005

Abstract

Rendahnya kemampuan Koneksi matematis siswa perlu diatasi dengan menerapkan pembelajaran yang tepat karena berkaitan dengan kemampuan siswa mengaitkan konsep matematika dengan konsep lain atau dengan kehidupan sehari-hari. Jenis penelitian yang dilakukan adalah jenis penelitian tindakan kelas yang dilaksanakan dalam 2 siklus dengan menggunakan model pembelajaran Problem Based Learning (PBL). Dalam setiap siklus terdiri dari 4 tahap yaitu penyusunan perencanaan, pelaksanaan tindakan, pengamatan (observasi), dan refleksi. Penelitian ini bertujuan untuk meningkatkan kemampuan koneksi matematis siswa melalui model pembelajaran Problem Based Learning (PBL). Penelitian dilakukan di SMK N 6 Medan dengan subjek penelitian siswa kelas XI OTKP 2 dengan jumlah siswa sebanyak 35 siswa. Dari hasil penelitian menunjukkan bahwa kemampuan koneksi matematis siswa dengan model PBL dapat meningkat. Dimana pada tes kemampuan awal siswa kemampuan koneksi matematis yang dimiliki siswa masih tergolong rendah yaitu 42,28%. Dan pada siklus I setelah dilakukan penerapan model PBL kemampuan siswa jadi meningkat ke dalam kategori sedang yaitu 72,26%, karna siklus I belum mencapai target keberhasilan dengan demikian dilanjutkan pada siklus II. Hasil tes pada siklus II didapatkan 88,25% yang masuk dalam kategori tinggi, dengan demikian pada siklus II sudah mencapai target keberhasilan maka penelitian dilakukan sampai siklus II saja. Sehingga dapat disimpulkan bahwa penerapan model Problem Based Learning (PBL) dapat meningkatkan kemampuan koneksi matematis siswa pada materi fungsi komposisi dan invers di SMK N 6 Medan.
Penerapan Pendekatan Matematika Realistik (PMR) pada Materi Trigonometri untuk Meningkatkan Pemahaman Konsep Lubis, Mindo Juliani Kelly; Panggabean, Ellis Mardiana; Tambunan, Hardi
Indo-MathEdu Intellectuals Journal Vol. 6 No. 1 (2025): Indo-MathEdu Intellectuals Journal
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/imeij.v6i1.2743

Abstract

This study aims to determine the improvement of students' ability to understand mathematical concepts by using the Realistic Mathematics Approach (PMR). This study is a pseudo-experimental research with posttest only control group design. The population of this study is all students of grade XI SMK Negeri 6 Medan even semester of the 2025 school year with a total of 280 students and distributed into 8 classes. The sample of this study is class X Accounting 1 with a total of 36 students as an experimental class and class X Accounting 2 with a total of 35 students as a control class. Data were collected using tests and statistically analyzed to find out the differences between the two classes. The results of the hypothesis test with the Mann Whitney U test, it is known that the value of Z-count = 1.879 is more than Z-critical = 1.645. This shows that the median concept understanding of students who follow learning with the PMR Approach is higher than the median concept understanding that follows regular learning. The average value of students' concept understanding in the class applying the PMR approach x ̅=62 was higher than the class that followed the usual learning where x ̅=53. Thus, it can be concluded that the understanding of mathematical concepts of students who participate in learning with the PMR approach is higher than the understanding of mathematical concepts of students who follow ordinary learning
Eksplorasi Tepak Sirih Melayu Deli terhadap Konsep Geometri Sinaga, Agustina Mayen Rilen; Marpaung, Melda Melina Siska; Lubis, Mindo Juliani Kelly; Tambunan, Hardi; Simanjuntak, Ruth M.
Jurnal Pendidikan Tambusai Vol. 8 No. 2 (2024)
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Budaya sangat lekat di masyarakat Indonesia, Matematika dan budaya juga merupakan dua aspek yang saling berkaitan. Konsep matematika dapat digunakan untuk mengeksplorasi Matematika dalam budaya. Istilah yang digunakan untuk mengasosiasikan matematika dan budaya adalah etnomatematika. Unsur budaya seperti tarian daerah, lagu daerah, adat istiadat, bahasa daerah, permainan tradisional, makanan tradisional perlu dilestarikan dan dilestarikan. Salah satunya adalah benda budaya yang terdapat pada Suku Melayu Deli yakni tepak Sirih. Tepak sirih adalah salah satu benda yang selalu digunakan dalam setiap acara Melayu sebagai tempat sirih pertanda pembukaan dan penyanghormatan pada tamu yang datang. Hasil peneltian ini menunjukkan adanya konsep geometri dalam tepak sirih melayu yang dapat digunakan dalam pembelajaran matematika.
Penerapan Pendekatan Matematika Realistik (PMR) pada Materi Trigonometri untuk Meningkatkan Pemahaman Konsep Lubis, Mindo Juliani Kelly; Panggabean, Ellis Mardiana; Tambunan, Hardi
Indo-MathEdu Intellectuals Journal Vol. 6 No. 1 (2025): Indo-MathEdu Intellectuals Journal
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/imeij.v6i1.2743

Abstract

This study aims to determine the improvement of students' ability to understand mathematical concepts by using the Realistic Mathematics Approach (PMR). This study is a pseudo-experimental research with posttest only control group design. The population of this study is all students of grade XI SMK Negeri 6 Medan even semester of the 2025 school year with a total of 280 students and distributed into 8 classes. The sample of this study is class X Accounting 1 with a total of 36 students as an experimental class and class X Accounting 2 with a total of 35 students as a control class. Data were collected using tests and statistically analyzed to find out the differences between the two classes. The results of the hypothesis test with the Mann Whitney U test, it is known that the value of Z-count = 1.879 is more than Z-critical = 1.645. This shows that the median concept understanding of students who follow learning with the PMR Approach is higher than the median concept understanding that follows regular learning. The average value of students' concept understanding in the class applying the PMR approach x ̅=62 was higher than the class that followed the usual learning where x ̅=53. Thus, it can be concluded that the understanding of mathematical concepts of students who participate in learning with the PMR approach is higher than the understanding of mathematical concepts of students who follow ordinary learning
Co-Authors Ellis Mardiana Panggabean Hasibuan, Khoirunnisa Marpaung, Melda Melina Siska Simanjuntak, Ruth M. Sinaga, Agustina Mayen Rilen Surya Wisada Dachi Tambunan, Hardi