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Efektivitas Tipe Student Teams Achievement Devisions Terhadap Pemahaman Konsep dan Kemampuan Berpikir Tingkat Tinggi Dalam Pembelajaran Sistem Persamaan Linier Tiga Variabel Kelas X SMK Swasta Parulian 1 Medan T. A. 2025/2026 sihotang, maria; Tambunan, Hardi; Hutauruk, Agusmanto J.B
Imajiner: Jurnal Matematika dan Pendidikan Matematika Vol 8, No 3 (2026): Imajiner: Jurnal Matematika dan Pendidikan Matematika
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/imajiner.v8i3.27472

Abstract

This study aims to determine the effectiveness of the Student Teams Achievement Divisions (STAD) method on conceptual understanding and higher-order thinking skills in the teaching of systems of linear equations with three variables for 10th-grade students at Parulian 1 Private Vocational High School, Medan, Academic Year 2025/2026. The study population consists of all 10th-grade students, and the sample comprises 60 10th-grade students. The sampling technique used was Purposive Random Sampling. The instruments used were tests, questionnaires, and observations. The research results, as seen from the indicators of learning effectiveness, were met: the learning structure was in the “good” category, teacher communication was in the “good” category, student response was in the “good” category, student activity was in the “good” category, and learning achievement was in the “achieved” category. The research results indicate that the Student Teams Achievement Divisions (STAD) learning method is effective in enhancing conceptual understanding and higher-order thinking skills.
Efektivitas Pembelajaran Berbasis Masalah Terhadap Pemahaman Konsep dan Kemampuan Berpikir Tingkat Tinggi Siswa Pada Materi Fungsi Kuadrat di Kelas X SMK Swasta Parulian 1 Medan T.A 2025/2026 simarmata, eunike claudia; Tambunan, Hardi; Simanjuntak, Ruth Mayasari
Imajiner: Jurnal Matematika dan Pendidikan Matematika Vol 8, No 3 (2026): Imajiner: Jurnal Matematika dan Pendidikan Matematika
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/imajiner.v8i3.27465

Abstract

This study aims to determine the effectiveness of problem-based learning on students’ conceptual understanding and higher-order thinking skills regarding quadratic functions among 10th-grade students at Parulian 1 Private Vocational High School in Medan during the 2025/2026 academic year. This is a quantitative study using a descriptive approach. The population in this study consists of all 10th-grade students, while the sample comprises Class X-TKJ and X-AP, selected through purposive random sampling. The instruments used include essay tests, questionnaires, and observation sheets, all of which have been validated for validity and reliability. The results of the study indicate that problem-based learning is effective in improving students’ conceptual understanding of mathematics and higher-order thinking skills, with a level of effectiveness falling into the moderate category.
Co-Authors Adi Suarman Situmorang, Adi Suarman Aruan, Anggie Desi K. Bancin, Resy Karina Christine Christina Sitepu Dakhi, Noferia Damanik, Friska Dewi Trymidawati Ellis Mardiana Panggabean Farasi, Dosni Roham Damai Setia Firman Pangaribuan Giawa*, Yulina Giawa, Sentosa Giawa, Yulina gultom, eva meliana Gultom, Kristina Gultom, Limasso Gultom, Sanggam P Hia, Lutemaria Hutapea, Jernyta Futri Agustina Br. Hutauruk, Agusmanto J.B Juraganda S, Chandra Saptanto Laia, Yunus Lena Rosdiana Pangaribuan Lubis, Mindo Juliani Kelly Lumban Toruan, Nia Natasha Luna Theresia Tamhunan M Simanjuntak, Ruth Manalu, Ayunasari Manik, Efron Manik, Jois Febri Marpaung, Melda Melina Siska Marpaung, Riko Kurniawan Naibaho, Tutiarny Napitupulu, Eastman Ndruru, Marinus Pakpahan, Yurni Kristina Pangaribua, Firman Panggabean, Ellis M Panggabean, Ellis M. Pardosi, Monalisa Parsaulian, Benni Polin Pasaribu, Anita Sabrina Pasaribu, Mei Sartika purba, rIcky rikardo Purba, Tuty Novelinda Rani Farida Sinaga Ritonga, Roy Ricardo Roulina, Roulina Rumapea, Lenni Santana Ruth Mayasari Simanjuntak Sembiring, Thresia Yohana Siagian, Rebeka br Sianturi, Esra Chatarina Sianturi, Krismawati Sihite, Epiphanias Br Sihite, Epiphanias Br. Sihombing, Artha Hadia sihombing, dame ifa Sihombing, Heldon Sihombing, Susi Sihotang, Friska Ladista Sihotang, Maria Silaban, Naomi Silalahi, Lulu Brygita Silangit, Menna Sri Ulina Simamora, Dinarti Simamora, Rona Marisa Simanjuntak, Ruth Simanjuntak, Ruth M Simanjuntak, Ruth M. Simanujuntak, Ruth M Simarmata, Eunike Claudia Simbolon, Lolyta Damora Sinaga, Agustina Mayen Rilen Sinaga, Amrinaldo Sinaga, Lorinta Rupmahita Sinaga, Rianda sinaga, samuel juliardi Sinaga, Wita Sitepu, Edi Petra Situmeang, Santi Yohana Situmorang, Mahanda Dinaria Tampubolon, Samto Rediwan Togatorop, Fresty Handayani Yunita Sinaga, Yunita Zagoto, Lidwina Shinta Zebua, Berliance Zamira