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All Journal Jurnal Ikatan Alumni Fisika Universitas Negeri Medan Fisitek : Jurnal Ilmu Fisika dan Teknologi Journal on Education AMALIAH: JURNAL PENGABDIAN KEPADA MASYARAKAT MES: Journal of Mathematics Education and Science Jurnal Eduscience (JES) Jurnal Pengabdian Mandiri Education & Learning Jurnal Penelitian Pendidikan MIPA
Jafri Haryadi
Kopertis Wilayah I DPK- UMN Al-Washliyah Medan
Humanities Chemistry Computer Science & IT Education Languange, Linguistic, Communication & Media Mathematics Physics Social Sciences Other

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Journal : MES: Journal of Mathematics Education and Science

 1 
IMPLEMENTASI MODEL DISCOVERY LEARNING DALAM UPAYA MENINGKATKAN AKTIVITAS DAN HASIL BELAJAR SISWA Jafri Haryadi; Santi Pratiwi
MES: Journal of Mathematics Education and Science Vol 6, No 2 (2021): Edisi Mei
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/mes.v6i2.3730

Abstract

This study aims to determine the increase in active activity and student learning outcomes through discovery learning models in the physics learning process. This study applies a classroom action research model that is implemented to correct some weak aspects of previous learning through a process of reflection. The object of this research is the students of SMA Negeri 2 Perbaungan class X, amounting to 30 people. The results indicated that there had been a significant increase in student activity and learning completeness. In the first cycle, the percentage of student activity was 46.30% and the percentage of student learning completeness was 40%. As for the second cycle, it was found that the average student activity was 77.67% and the percentage of student learning completeness was 86.67%. This shows that the activities that have been carried out in each cycle II do not need to be corrected and declared successful.
PENGARUH PENGUASAAN PENYUSUNAN DAN PENGURAIAN VEKTOR TERHADAP HASIL BELAJAR PADA MATERI HUKUM NEWTON Jafri Haryadi
MES: Journal of Mathematics Education and Science Vol 7, No 2 (2022): Edisi April
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/mes.v7i2.5675

Abstract

This study aims to determine the mastery of vector arrangement and decomposition on students' abilities in the matter of Newton's laws. In collecting data for this research, tests were given on the material of vector arrangement and decomposition and the material of Newton's laws. This test is to see the ability in mastery of the learning materials above. Data analysis shows that there is an influence of mastery of vector arrangement and decomposition on students' abilities in Newton's laws of matter. The results of the calculation of the correlation coefficient obtained an r value of 0.86 and continued with the significance test of the correlation coefficient, the t value was 9.70 which was greater than the t table value, which was 1.694. In the calculation of the coefficient of termination obtained a value of 0.7427. This result shows 74.27% which shows that there is a contribution of mastery of vector arrangement and decomposition to students' abilities in Newton's laws of matter.
Co-Authors Asidah Hasibuan Dara Fitrah Dwi Dara Fitrah Dwi Elia Putri Emelia Rahmadany Putri Gami Farida Yani Hajar Mawaddah Hajar Mawaddah Joko Suharianto Khairiah Khairiah Khairiah, Khairiah Khusairi, Muhammad Samsir Lia Afriyanti Nasution Lia Afriyanti Nst Muhammad Sabdana Nasution, Nopitrah Rasmi Nurhayati Nengsi Putri Pratiwi Lestari Putut Marwoto Rita Destini Rofiqoh Hasan Harahap Santi Pratiwi SIREGAR, ULFAH HASANAH Siti Aisyah Sri Wahyuni Sutri Novika Tusakdiah, Halimah Uswatun Hasanah