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All Journal MaPan : Jurnal Matematika dan Pembelajaran Indonesian Journal of Science and Mathematics Education JURNAL PENDIDIKAN TAMBUSAI Al-Khwarizmi: Jurnal Pendidikan Matematika dan Ilmu Pengetahuan Alam Jurnal EDUCATIO: Jurnal Pendidikan Indonesia M A T H L I N E : Jurnal Matematika dan Pendidikan Matematika Math Educa Journal JPMI (Jurnal Pembelajaran Matematika Inovatif) FARABI: Jurnal Matematika dan Pendidikan Matematika Journal Of Human And Education (JAHE) Journal of General Education and Humanities JME (Journal of Mathematics Education) Jurnal Pengembangan Pembelajaran Matematika Unnes Journal of Mathematics Education Relevan : Jurnal Pendidikan Matematika Media Pendidikan Matematika
Mara Samin Lubis, Mara Samin
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Humanities Computer Science & IT Decision Sciences, Operations Research & Management Education Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Social Sciences Other

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Journal : M A T H L I N E : Jurnal Matematika dan Pendidikan Matematika

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Pocket Book Design Based On Mathematical Puzzles To Improve The Mathematical Logical Intelligence Of Grade XI Students Sirait, Abadihon Fazli; Lubis, Mara Samin
Mathline : Jurnal Matematika dan Pendidikan Matematika Vol. 8 No. 1 (2023): Mathline
Publisher : Universitas Wiralodra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31943/mathline.v8i1.378

Abstract

Teachers have a big role in developing and improving students' mathematical logical intelligence skills. However, teachers only focus on using package books in teaching in the classroom. As a result, students do not show a great attitude of enthusiasm, students struggle and are unable to think logically, creatively and innovatively in developing skills when doing math problems. Therefore, researchers are interested in creating a pocket book based on Mathematical Puzzles (TTM) class XI. This study aims to determine the feasibility, practicality and effectiveness of the pocketbook. This research is a research and development or R&D with a 4-D to 3-D model. The results of this study are the calculation value of V Aiken on the validation data of material experts of 0.903 and media experts of 0.8 are classified as feasible to use. Then the results of the calculation of V Aiken student response data of 0.932 and teacher response data of 0.894 are classified as very practical to use during learning. While the calculation of the t-Paired test in the pretest and posttest results obtained the value ,t-count.=6.1807, there is an increase in the mathematical logical intelligence of students so that the book is categorized as very effective. It can be concluded that the pocketbook based on class XI mathematical puzzles can improve the mathematical logical intelligence ability of class XI students.
Development of Student Worksheets (LKPD) on Integer Topics to Improve Seventh-Grade Students’ Mathematical Problem Solving Abilities at SMP Negeri 3 Halongonan Harahap, Nia Helmita; Lubis, Mara Samin
Mathline : Jurnal Matematika dan Pendidikan Matematika Vol. 11 No. 1 (2026): Mathline : Jurnal Matematika dan Pendidikan Matematika
Publisher : Universitas Wiralodra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31943/mathline.v11i1.1105

Abstract

The development of appropriate learning materials is essential to support active learning and to enhance students’ understanding of mathematical concepts, particularly in problem-solving activities that require logical and systematic thinking. This study aimed to develop Student Worksheets (LKPD) on integer topics that meet the criteria of validity, practicality, and effectivity in improving seventh-grade Students’ Mathematical Problem-Solving Abilities at SMP Negeri 3 Halongonan. This research applied a Research and Development (R&D) method based on the 4D development model, which includes the stages of define, design, develop, and disseminate. The participants of this study were seventh-grade students at SMP Negeri 3 Halongonan. The instruments used in this study consisted of validation sheets assessed by media and subject-matter experts, student response questionnaires, and a test measuring mathematical problem-solving skills. The results indicated that the developed worksheets achieved a validity score of 87.27% from media experts, categorized as highly valid, and 75% from subject-matter experts, categorized as valid. The practicality test showed a percentage of 67.26%, indicating that the worksheets were practical and easy to implement in classroom learning activities. The effectiveness of the worksheets was indicated by an increase in students’ mathematical problem-solving skills, as reflected by an N-gain value of 0.55, classified as category. These findings suggest that the developed worksheets help students better understand integer concepts, increase learning engagement, and support the development of mathematical reasoning skills. Therefore, the developed LKPD is considered appropriate and practical to implement as a mathematics teaching medium for integer topics for seventh-grade students at SMP Negeri 3 Halongonan.
Co-Authors Adolina, Adolina Amalia, Ariza Amiruddin Siahaan Ananda, Rusydi Andhany, Ella Anggraini, Azra Aritonang, Tsania Khairani Barokah, Pinta Riski Fadhilah, Adinda Ayu Harahap, Nia Helmita Hasibuan, Nabila Sari Indriani, Ririn Inom Nasution Kamalia, Lailatun Nur Lubis, Nur Ainun Mayona Mn, Ayuly Mesiono, Mesiono Nasution, Habib Al Ghifari Nasution, Sarmila Fitri Yanti Ningsih, Euis Indah Padang, Devi Syafitri Pradana, Chandra Anggi Raihana Ritonga, Abdul Rahman Salsabila, Shakila Sembiring, Rinawati Sepriani, Elmi Sirait, Abadihon Fazli Siregar, Tanti Jumaisyaroh Siti Salamah Br Ginting Sitorus, Khairun Niswah Suci Dahlya Narpila, Suci Dahlya Taufik Hidayat Wahyudin Nur Nasution, Wahyudin Nur Wulandari, Rismawati Zohra, Milda