TPACK Based Differentiated Problem Posing to Enhance Entrepreneurial Digital Problem Solving Derlina Derlina, Siti Zuhra, Satria Mihardi, Rajo Hasim Lubis, John Tampil Purba, Stephanie Stephanie Aptisi Transactions on Technopreneurship, 2025 This study aims to determine the effect of TPACK-based differentiated learning on high school students' problem-solving abilities and motivation. The study, conducted at Private Senior High School PAB 8 Saentis Sei Tuan, used a quasi-experiment method with two classes: the experimental class, which used the differentiated problem solving model based on TPACK, and the control class, which used the conventional school learning model without differentiation. The results of this study indicate that the average post-test score for student problem-solving abilities in the experimental class was higher than in the control class. Statistical testing using two-way ANOVA showed that the problem-solving skills of students taught with the TPACK-based differentiated learning model demonstrated a significant influence between the learning model and motivation on students' problem-solving skills, as well as an interaction between the TPACK based problem posing learning model and motivation in terms of problem-solving skills. These findings have practical implications for educators, providing evidence that the TPACK-based differentiated problem-posing learning model is more effective in improving students' problem solving abilities than the conventional learning model, with learning motivation also playing an essential role in enhancing student problem-solving skills.
Needs Analysis on Learning Devices to Support Blended Based High School Physics Teaching of North Sumatra Motlan, Jurubahasa Sinuraya, Satria Mihardi Aip Conference Proceedings, 2022 This research aims to describe: (1) high school physics teacher perception on blended learning, (2) physics teacher skill in using technologies in teaching, and (3) the availability of teaching devices that support blended learning. This research uses a survey method. The subject of this research consists of 72 high school physics teachers of 33 districts/municipalities which are at North Sumatera. The instruments used are questionnaires, interview forms, and documentation study. The data analysis technique uses descriptive by percentage. This research shows that: (1) high school physics teacher perception in using blended learning is positive consecutively: 9.0 % strongly agree, 50.0% agree, 30.0% quite agree, and 11.0% don’t agree; (2) high school physics teacher in using teaching technology tends to be good with the details are as follows: 74.0% capable of using online and blended learning, 79.0% can access teaching video, and 73.0% can conduct video editing; and (3) the availability of learning devices covers lesson plan, teaching materials, student worksheet, media, the strategy of developing teaching devices, and evaluation instruments, is 85.0%. However, the relevancy aspect in supporting blended learning of overall learning device is 60.5 %.
CHARACTERIZATION OF GLUTARALDEHYDE COMPOSITION ON PVA-ENZYME COATED PVC-KTPCLPB MEMBRANE WITH XRD, UV-VIS, SEM-EDS, AND FTIR S. Abd. Hakim, Satria Mihardi, Abdul Rais Rasayan Journal of Chemistry, 2022 An indicator electrode has been made in two ways using the urease enzyme immobilization technique with Glutaraldehyde (GA) crosslinking at various concentrations (2.6 - 3.0)%. The aim is to choose the best indicator electrode from both methods, this is through XRD, SEM-EDS, and FTIR analysis. The method used is a potentiometric biosensor method. The indicator electrode for the first method is denoted PVA-E-GA/PVC-KTpClPB, meaning that PVA-E is mixed with PVA-E solution coated with PVC-KTpClPB. The indicator electrode of the second method is denoted PVA-E/GA/PVC-KTpClPB, meaning that PVA-E coated with GA is coated with PVC-KTpClPB. Each in 1x, 2x, and 3x layer variations. The best results of GA crosslinking from the first and second methods were at a concentration of 2.9%. The best result of the first method of indicator electrode is PVA-E-GA3x/PVC-KTpClPB1x. the best result of the second method is the indicator electrode PVA-E 1x/GA 1x/PVC-KTpClPB 1x
Characterization of manufacturing indicator electrodes coated PVA-enzyme coated 1X GA and 3X GA 2.9 % coated PVC-KTpClPB coated using potentiometry method A Hakim S, S Mihardi, A Rais, Willy, Y T H Panjaitan Journal of Physics Conference Series, 2022 Research has been carried out on the manufacture of tungsten indicator electrodes with a diameter of 1 mm coated with PVA-Enzyme coated with PVC-KTpClPB using the biosensor potentiometer method. It has a sensitivity of 19,096 mV/decade, a detection range of 1.10-5 - 5.10-4 M, a detection limit of 1.10-5 M and a correlation coefficient of R2 = 0.9431. This detection range is very small, only a difference of one order to the negative power. On the basis of this small range, the PVA-Enzyme and PVA-Enzyme-GA solutions have been characterized by UV-vis showing a very clear difference in the width of the absorbance peak at wavelength. The indicator electrodes B1-4 and B3-4 have been analyzed using UV-vis, FTIR, SEM-eds and XRD. The method used is the biosensor poteniometric method, urease enzyme immobilization technique, which analytes urea in determining sensitivity, detection range and detection limit, as well as variable signal analysis of 60 signals/second. The results obtained from the indicator electrode B1-4 have a sensitivity of 46.67 mV/decade, a detection range of 10-4 - 10-2 M and a detection limit of 10-4 M, R2 = 99.62 %. The indicator electrode B3-4 has a sensitivity of 38.16 mV/decade, a detection range of 10-6 - 10-4 M and a detection limit of 10-6 M, R2 = 95.42 %. The best results on electrodes B1-4.
Characterization of urea analyte solution and electrolyte solution using non-immobilized electrode indicators and pva-enzyme coated pvc-ktpclpb immobilization A. Hakim S, M. Situmorang, K. Sebayang, T. Sembiring, K. Tarigan, S. Mihardi, N. M. Noor, J. Elnovreny Rasayan Journal of Chemistry, 2021 Electrolyte solutions used in potentiometric cells from ion-selective electrode (ISE) sensors urea contribute to a good enzymatic reaction. This study aims to obtain electrolyte solutions that have the best response to ISE on the electrode modification membrane electrode 35 mg PVA-enzyme coating 35 mg PVC-500 mg KTpClPB. Solution analysis begins with the characterization of ISE electrode membranes using UV-vis, SEM-EDX, and XRD, the best results on electrode membranes are used as ISE. Analyzing the solution sequentially is a phosphate buffer solution, KCl phosphate buffer solution and phosphate buffer KCl injection with urea using a potentiometer, power lab, and computer to see the solution response. Based on the results of the computer response obtained a phosphate buffer solution pH 5.5, 0.001 M, 0.001 M KCl, and 0.001 M urea.
Characterization of indicator electrodes using the potentiometric biosensor method as urea sensor with XRD, SEM-EDS, UV-Vis and FTIR S A Hakim, T Sembiring, K Sebayang, M Situmorang, K Tarigan, K Sembiring, S Mihardi, E N Waruwu Journal of Physics Conference Series, 2021 Abstract The purpose of this study is the characteristics of the indicator electrode which has been coated with a membrane with XRD, SEM-EDS, UV-Vis and FTIR. Research has been carried out using XRD, SEM-EDS, UV-Vis and FTIR tests on immobilized indicator electrodes 0.0350 g PVA-Enzyme coated with PVC-KTpClPB 0.0120 g and 0.0500 g. The method used was the biosensor potentiometric method with the urease enzyme immobilization technique in PVA coated with PVC-KTpClPB. To see the difference in the absorbance spectrum pattern of each PVA-Enzyme composition coated with PVC-KTpClPB against wavelength with UV-Vis, PVA-Enzim solution as a reference and PVC-KTpClPB solution as the first analysis 0.0120 g and as the second analysis 0,0500 g. To see the PVA-enzyme membrane coated with PVC-KTpClPB in the two compositions above was characterized by FTIR and SEM-EDS. To see the indicator electrode that had been immobilized by PVA-enzyme coated with PVC-KTpClPB in the two compositions above, it was characterized by XRD. It was concluded that the best results were found on the immobilization indicator electrode of 0.0350 g PVA-Enzyme coated with 0.0350 g PVC-0.0500 g KTpClPB.
The validity of conceptual knowledge test on mechanics topic Y I Tanjung, A M Siregar, A Bakar, S Mihardi Journal of Physics Conference Series, 2020 Abstract This study aims to analyze the validity of conceptual knowledge test on mechanics topic. The research method used four stages that was Preliminary Research, Prototyping Stage, Summative Evaluation, Systematic Reflection and Documentation. This article report is focused on preliminary research and prototyping stage that is to arrange conceptual knowledge test and analyze validity of test by Content Validity Ratio (CVR) method. Based on the data analysis, it was concluded that the test was valid and feasible to use on students.
RECENT SCHOLAR PUBLICATIONS
Tpack based differentiated problem posing to enhance entrepreneurial digital problem solving D Derlina, S Zuhra, S Mihardi, RH Lubis, JT Purba, S Stephanie Aptisi Transactions on Technopreneurship (ATT) 7 (3), 914-926 , 2025 2025 Citations: 4
INSTRUMEN EVALUASI KUALITAS PENDIDIKAN SEKOLAH MENENGAH (PERANGKAT, PROSES, DAN EVALUASI) DI MEDAN KU Wawan Bunawan, Satria Mihardi, Trisnawati Hutagalung, Choms Gary Ganda ... JURNAL PENELITIAN BIDANG PENDIDIKAN 31 (1), 40-51 , 2025 2025
Validation of the Case Method Performance Assessment Evaluation System in Presenting Learning Outcome Products S Mihardi, Derlina, W Bunawan, AM Siregar, T Hardianti, MK Dahlan, ... Proceedings of the 6th International Conference on Innovation in Education … , 2025 2025
Minimizing Physics Students Misconceptions Through Using Investigation-Based Group Inquiry Model Worksheets J Sinuraya, Motlan, S Mihardi, DD Panggabean, JS Karo-Karo, ... Proceedings of the 6th International Conference on Innovation in Education … , 2025 2025
The Effect of TPACK-Based Differentiated Inquiry Learning Model on Motivation and Physics Problem Solving Ability D Derlina, P Amalia, RH Lubis, S Mihardi Proceedings of the 9th Annual International Seminar on Transformative … , 2024 2024
PENINGKATAN PEMAHAMAN DAN PRODUK OLAHAN SAMPAH MENGGUNAKAN CRUSHER MACHINE DI KOTA MEDAN AM Siregar, E Eddiyanto, T Hidayat, H Abdullah, I Irfandi, M Nainggolan, ... Martabe: Jurnal Pengabdian Kepada Masyarakat 7 (11), 4460-4472 , 2024 2024
EVALUATING THE IMPACT OF CASE-BASED TEACHING MATERIALS IN PHYSICS TOWARDS OBE CURRICULUM S Mihardi, D Derlina, W Bunawan, AM Siregar, T Hardianti, ... Jurnal Curere 8 (2), 216-222 , 2024 2024
Implementation of Inquiry Learning Based on Creativity and Science Process Skills J Sinuraya, S Mihardi, S Abd Hakim Jurnal Penelitian Pendidikan IPA 10 (7), 3650-3655 , 2024 2024 Citations: 2
Development of Physics Test Instruments to Measure Problem Solving Skills on Dynamic Fluid Materials YUI TANJUNG, AP SANJAYA, S Mihardi JOURNAL OF INNOVATIVE PHYSICS TEACHING Учредители: Universitas Negeri Padang … , 2024 2024 Citations: 2
RESPON MAHASISWA TERHADAP LEMBAR KERJA MAHASISWA MODEL INKUIRI GRUP BERBASIS INVESTIGASI (LKM-IGBI) MATERI POKOK HUKUM-HUKUM NEWTON TENTANG GERAK J Sinuraya, Motlan, S Mihardi JURNAL CURERE 7 (2), 20-24 , 2023 2023
THE RELATIONSHIP BETWEEN ANALYTICAL SKILLS AND THE STAGES OF THE CASE METHOD IN DETERMINING THE BEST SOLUTION YLPS Satria Mihardi, Derlina, Alkhafi Maas Siregar JURNAL CURERE 7 (2), 25-29 , 2023 2023
Improving Graphical and Numerical Representational Competence Coherence with Laboratory Investigation and Computer to Solve Problem-Solving of Geometry Optical Materials W Bunawan, S Mihardi, P Sitompul, I Ramadhani Jurnal Penelitian Pendidikan IPA 9 (7), 5055-5061 , 2023 2023 Citations: 4
DAMPAK PENGEMBANGAN INSTRUMEN TES GERAK SATU DIMENSI UNTUK MAHASISWA SARJANA TINGKAT LANJUT TERHADAP TINGKAT KEMAMPUAN KONSEPTUAL FISIKA W Bunawan, S Mihardi, Sabani Jurnal Penelitian Bidang Pendidikan 29 (1), 14-23 , 2023 2023 Citations: 1
LEARNING MANAGEMENT SYSTEMS ADVANTAGES FOR BLENDED LEARNING IN THE NEW NORMAL POST-PANDEMIC AT THE SCHOOL LEVEL IN MEDAN-INDONESIA. Motlan, J Sinuraya, S Mihardi International Journal of Early Childhood Special Education 14 (3), 21-24 , 2023 2023 Citations: 2
The Effectiveness of Using Alternative E-Learning Using Case Method in Physics Learning in Dealing with Changes in Learning Modes During a Pandemic Derlina, S Mihardi, AM Siregar, A Hakim S Advances in Social Sciences Research Journal 10 (1), 1-7 , 2023 2023
Advantages of Various Technologies in the Application of ICARE to Train Undergraduated Students' HOTS Capability J Sinuraya, Motlan, S Mihardi International Journal of Early Childhood Special Education 15 (4), 43-52 , 2023 2023
The Effectiveness of Inquiry-Group Based Blended Learning Management System on High School Physics of High School Students of North Sumatera-Indonesia Motlan, S Mihardi, J Sinuraya Advances in Social Sciences Research Journal 9 (12), 88-95 , 2022 2022
Needs analysis on learning devices to support blended based high school physics teaching of North Sumatra Motlan, J Sinuraya, S Mihardi AIP Conference Proceedings 2659 (1), 120010 , 2022 2022
Fisika SMA Kelas XI M Motlan, J Sinuraya, S Mihardi Yayasan Kita Menulis , 2022 2022
Scientific Attitudes in Scientific Online Learning Management for Student Successful Characters S Mihardi, Derlina, HS Shiddiq, J Sinuraya Advances in Social Sciences Research Journal 9 (7), 691–697 , 2022 2022 Citations: 3
MOST CITED SCHOLAR PUBLICATIONS
The Effect of Project Based Learning Model with KWL Worksheet on Student Creative Thinking Process in Physics Problems S Mihardi, MB Harahap, RA Sani. Journal of Education and Practice 4 (25), 188-200 , 2013 2013 Citations: 202
Improved Characters and Student Learning Outcomes Through Development of Character Education Based General Physics Learning Model S Derlina, S Mihardi Journal of Education and Practice 6 (21), 162-170 , 2015 2015 Citations: 38
Effect Model Inquiry Training on Student’s Science Process Skill MB Harahap, SR Manurung, MA Marbun, S Mihardi Advances in Social Sciences Research Journal 3 (11), 38-42 , 2016 2016 Citations: 16
IMPROVEMENT OF GRAPH INTERPRETATION ABILITY USING HYPERTEXT-ASSISTED KINEMATIC LEARNING AND FORMAL THINKING ABILITY SR Manurung, S Mihardi, NY Rustaman, N Siregar Jurnal Pendidikan Fisika Indonesia 14 (1), 1-6 , 2018 2018 Citations: 11
Improving the Conceptual Understanding in Kinematics Subject Matter with Hypertext Media Learning and Formal Thinking. SR Manurung, S Mihardi Journal of Education and Practice 7 (9), 91-98 , 2016 2016 Citations: 11
Improved problem-solving ability after using interactive multimedia in teaching of ideal gas SR Manurung, S Mihardi Indian Journal of Science and Technology 11 (36), 1-7 , 2018 2018 Citations: 8
Tpack based differentiated problem posing to enhance entrepreneurial digital problem solving D Derlina, S Zuhra, S Mihardi, RH Lubis, JT Purba, S Stephanie Aptisi Transactions on Technopreneurship (ATT) 7 (3), 914-926 , 2025 2025 Citations: 4
Improving Graphical and Numerical Representational Competence Coherence with Laboratory Investigation and Computer to Solve Problem-Solving of Geometry Optical Materials W Bunawan, S Mihardi, P Sitompul, I Ramadhani Jurnal Penelitian Pendidikan IPA 9 (7), 5055-5061 , 2023 2023 Citations: 4
Meningkatkan Hasil Belajar Mahasiswa Melalui Penerapan Model Pembelajaran Inkuiri Terbimbing Pada Matakuliah Fisika Umum J Sinuraya, S Mihardi Jurnal Penelitian bidang pendidikan 25 (2), 62-67 , 2019 2019 Citations: 4
Analyze Instrument for Improved Visualization Creativity In Learning Physics With Matlab Software Using PjBL and KWL S Satria Mihardi, Wawan Bunawan Advances in Social Sciences Research Journal 4 (17), 143-149 , 2017 2017 Citations: 4
Implementasi Model Pembelajaran Inquiry Training Dalam Pembelajaran Fisika Untuk Meningkatkan Kemampuan Berpikir Formal Siswa S Mihardi Jurnal Pendidikan Fisika Indonesia 11 (02), 162-176 , 2015 2015 Citations: 4
Implementation of inquiry training model in physics learning to improve students formal thinking ability S Derlina & Mihardi Jurnal Pendidikan Fisika Indonesia 11 (2), 162-169 , 2015 2015 Citations: 4
Implementasi Model Pembelajaran Inquiry Training Dalam Pembelajaran Fisika Untuk Meningkatkan Kemampuan Berpikir Formal Siswa D Nasution, S Mihardi Jurnal Pendidikan Fisika Indonesia 11 (2), 162-169 , 2015 2015 Citations: 4
Effect of project based learning model with KWL (Know-Want-Learn) worksheet on creative thinking in solved physics problems S Mihardi UNIMED , 2013 2013 Citations: 4
Scientific Attitudes in Scientific Online Learning Management for Student Successful Characters S Mihardi, Derlina, HS Shiddiq, J Sinuraya Advances in Social Sciences Research Journal 9 (7), 691–697 , 2022 2022 Citations: 3
CHARACTERIZATION OF GLUTARALDEHYDE COMPOSITION ON PVA ENZYME COATED PVC-KTPCLPB MEMBRANE WITH XRD, UV-VIS, SEM-EDS, AND FTIR A Hakim S, S Mihardi, A Rais Rasayan J. Chem 15 (04), 2714-2723 , 2022 2022 Citations: 3
OPTIMIZATION OF LEARNING WITH SCHOOLOGY FOR BEST PRACTICES IN QUALITY OF LEARNING OUTCOMES S Mihardi, AM Siregar, S Abd Hakim Jurnal Pendidikan Fisika 11 (1), 56-60 , 2022 2022 Citations: 3
Implementation of Inquiry Learning Based on Creativity and Science Process Skills J Sinuraya, S Mihardi, S Abd Hakim Jurnal Penelitian Pendidikan IPA 10 (7), 3650-3655 , 2024 2024 Citations: 2
Development of Physics Test Instruments to Measure Problem Solving Skills on Dynamic Fluid Materials YUI TANJUNG, AP SANJAYA, S Mihardi JOURNAL OF INNOVATIVE PHYSICS TEACHING Учредители: Universitas Negeri Padang … , 2024 2024 Citations: 2
LEARNING MANAGEMENT SYSTEMS ADVANTAGES FOR BLENDED LEARNING IN THE NEW NORMAL POST-PANDEMIC AT THE SCHOOL LEVEL IN MEDAN-INDONESIA. Motlan, J Sinuraya, S Mihardi International Journal of Early Childhood Special Education 14 (3), 21-24 , 2023 2023 Citations: 2
