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Dwi Novita Sari
Universitas Muslim Nusantara Al-Washliyah
Arts Humanities Economics, Econometrics & Finance Education Health Professions Languange, Linguistic, Communication & Media Mathematics Physics Public Health Social Sciences Other

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Journal : Journal on Education

 1 
Implementasi Model Pembelajaran Kooperatif Tipe Student Teams Achievement Division (STAD) dalam Meningkatkan Kemampuan Problem Solving dan Kreativitas Peserta Didik Pada Pembelajaran Matematika di SMK Negeri 2 Medan Afifah Tamimi; Dwi Novita Sari; Haryati Ahda Nasution; Seprianti Harahap; Amalia Retno Wulandari
Journal on Education Vol 6 No 4 (2024): Journal on Education: Volume 6 Nomor 4 Mei-Agustus 2024
Publisher : Departement of Mathematics Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joe.v6i4.5992

Abstract

This research aimed to improve the problem-solving abilities and creativity of students in class XI TITL-5 at SMK Negeri 2 Medan in learning mathematics through the implementation of the Student Teams Achievement Division (STAD) cooperative learning model. The research design used was Classroom Action Research (CAR) with two cycles of action. The research subjects were 30 students of class XI TITL-5. The instruments used included problem-solving ability tests, creativity questionnaires, Lesson Plans (RPP), Student Worksheets (LKPD), and observation sheets. The results showed that the application of the STAD cooperative learning model could significantly improve students' problem-solving abilities and creativity. In cycle I, the average problem-solving ability of students was 58.78, and the average creativity was 51.33. After the actions in cycle II, the average problem-solving ability increased to 81.03, and the average creativity reached 75.16. Thus, the STAD cooperative learning model proved effective in improving the problem-solving abilities and creativity of students in class XI TITL-5 at SMK Negeri 2 Medan.
Meningkatkan Kemampuan Komunikasi Matematis Siswa Dan Self Confidence Melalui Penerapan Model Problem Based Learning Di SMA Negeri 1 Tanjung Morawa Grace Stela Lely Hasugian; Dwi Novita Sari; Ramadhani Ramadhani; Burlianda Burlianda; Masniawita Gloria Sinaga
Journal on Education Vol 6 No 4 (2024): Journal on Education: Volume 6 Nomor 4 Mei-Agustus 2024
Publisher : Departement of Mathematics Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joe.v6i4.5993

Abstract

The objective of this classroom action research is to determine the improvement in students' mathematics communication abilities and self-confidence resulting from the implementation of the Problem Based Learning learning model. The research subjects consisted of 26 students from Class XI-Creative at SMA Negeri 1 Tanjung Morawa. The analysis of data on students' mathematical communication abilities in cycle I revealed that only 11 students, representing 42.30% of the total, met the criteria by scoring at least 70. The results indicated that the level of classical completeness fell short of the minimum threshold of 85%. In the second cycle, it was observed that 23 students, equivalent to 88.46% of the total student population, successfully met the desired communication level by attaining a minimum score of 70. The number of pupils who have achieved learning mastery has grown by 12. In Cycle I, there was a 14.49 rise in mathematical communication abilities, with an average score of 64.95 on the communication skills test. In Cycle II, the skills climbed to 79.44. Regarding students' self-confidence in the pre-cycle, the study revealed that 49.45% of students had trust in their own talents. This percentage grew to 59.89% in cycle I and further improved to 77.74% in cycle II. Regarding students' self-confidence in the pre-cycle, the study revealed that 51.8% of students demonstrated independent decision-making. This percentage grew to 65.62% in the first cycle and further rose to 78.6% in the second cycle. Regarding students' self-confidence in the pre-cycle, the study revealed that students had a favourable self-perception of 49.4%. In cycle I, this percentage rose to 62.3%, and in cycle II, it further grew to 78.75%. Regarding students' self-confidence in the pre-cycle, it was observed that 50% of students had the bravery to voice their ideas. In the first cycle, this percentage increased to 67.4, and in the second cycle, it further rose to 75.59. The use of the problem-based learning paradigm in the subject of systems of linear equations in two variables at SMA N 1 Tanjung Morawa has resulted in an improvement in students' mathematical communication.
Upaya Meningkatkan Pemecahan Masalah Matematis Siswa melalui Penerapan Model Problem Based Learning Sartika Juwita Br Sinaga; Dwi Novita Sari; Desniarti Desniarti; Burlianda Burlianda
Journal on Education Vol 6 No 4 (2024): Journal on Education: Volume 6 Nomor 4 Mei-Agustus 2024
Publisher : Departement of Mathematics Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joe.v6i4.6004

Abstract

This Classroom Action Research aims to determine the improvement of students' mathematical problem-solving skills through the application of the Problem-Based Learning model. The subjects in this class action research are all students of class XI Merdeka Jaya SMA Negeri 1 Tanjung Morawa even the semester of the 2023/2024 academic year consisting of 35 students (13 male students and 22 female students). This research data is in the form of quantitative data obtained from mathematical problem-solving ability tests with statistics material and qualitative data in the form of student activity data. The data analysis technique used in this research is simple statistical analysis. The results of data analysis showed that there was an increase in students' mathematical problem-solving ability through the application of the Problem-Based Learning model. The results showed an increase in students' mathematical problem-solving ability in each cycle where cycle I amounted to 57.14%, and cycle II amounted to 88.57%. Then the results showed that student activity in the learning process in each cycle where cycle I amounted to 70.83%, and cycle II amounted to 91.67%. So it can be concluded that this class action research, namely through the application of Problem-Based Learning, can improve students' mathematical problem-solving skills on matrix material in class XI Merdeka Jaya SMA Negeri 1 Tanjung Morawa.
Upaya Peningkatan Kemampuan Komunikasi Matematis dan Kecerdasan InterpesonalDengan Penggunaan Pembelajaran Tutor Sebaya di SMK N 2 Medan Rennika I.S. Simorangkir; Dwi Novita Sari; Desniarti Desniarti; Seprianti Harahap; Risna Ula Siregar
Journal on Education Vol 6 No 4 (2024): Journal on Education: Volume 6 Nomor 4 Mei-Agustus 2024
Publisher : Departement of Mathematics Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joe.v6i4.6021

Abstract

This study is a form of classroom action research (CAR) consisting of two cycles. The process comprises four stages: planning, implementation, observation, and reflection. The objective of this classroom action research is to assess the enhancement of students' mathematical communication abilities and interpersonal intelligence through the implementation of the peer tutoring cooperative learning paradigm. The study included a sample of 30 students from Class XI in the Machining Engineering Department at SMK Negeri 2 Medan. The data collection methods employed encompassed observation, questionnaires, and tests. The study's findings demonstrated enhanced mathematical communication abilities and interpersonal intelligence among the pupils. Evidence of this can be observed in the notable improvement of students' mathematical communication skills and interpersonal intelligence. Specifically, there was a significant rise in written mathematical communication skills from 20% to 66.6%, and a substantial increase in students' interpersonal intelligence from 43.3% to 86.6%. The findings suggest that the adoption of the peer tutoring cooperative learning model is successful in improving students' proficiency in mathematical communication and interpersonal intelligence at SMK Negeri 2 Medan. Enhancing mathematical communication skills and interpersonal intelligence within an educational environment can contribute to the overall objective of training students to be proficient and capable professionals in real-world situations.
Co-Authors ,Asmaul Husna Afifah Tamimi Ahmat Shobirin Aldi Aldi Alfira Alfira Amalia Retno Wulandari Atika Maulida Aulia Aprilia Burlianda Burlianda Burlianda Burlianda Desniarti Desniarti Desyana Desyana Endang Sulastri FadryanRaynal Zikri Farida Yani Firmansyah Firmansyah Grace Stela Lely Hasugian Habibie, Dian Haryati Ahda Nasution Ilfan Syafawi Irham Habibi Harahap Irham Habibi Harahap Juni Sahfitri Khairina Ulfa Syaimi Khairunnisa Fitri Leni Handayani Lia Syafitri M. Agus Syahputra M.Rizki Ridwan Rambe Masniawita Gloria Sinaga Mei Elisa Zahra Siregar Nana Yuniar Nikmah Abdillah Nila Lestari Nomi Noviani Nomi Novianti Nurul Azmi Nurul Azmi Saragih Putri Juwita Putri Maharani Rangkuti Rafiki Ikhsan Ramadhani Ratna Dewi Rennika I.S. Simorangkir Ridani Amalia Risna Ula Siregar Sarah Nabilah Sartika Juwita Br Sinaga Seprianti Harahap Seprianti Harahap Sri Wahyuni Sutriono Sutriono Toni Hidayat Winda Sari Br Panjaitan