Kajian analisis keperluan ini memberi fokus kepada kepentingan membina alat sokongan pengajaran dan pembelajaran makmal yang boleh diaplikasi secara berfokus terhadap objektif dan keperluan kumpulan sasaran. Dalam kajian analisis keperluan bagi pembangunan modul amali RASPHY, penentuan punca masalah dan topik yang paling sukar merupakan fokus utama bagi memastikan modul yang dihasilkan membantu pelajar dan pensyarah dalam pembelajaran subjek fizik di kolej matrikulasi. Seramai 203 orang responden yang terdiri daripada 173 pelajar dan 30 pensyarah fizik dari semua kolej matrikulasi Kementerian Pendidikan Malaysia terlibat dalam kajian analisis keperluan ini. Dapatan kajian ini mendapati majoriti responden setuju bahawa amali fizik yang dijalankan secara konvensional memerlukan pembaharuan untuk meningkatkan kefahaman dan minat mereka dalam menjalankan amali secara lebih optimum. Selain itu topik yang paling sukar yang menjadi pilihan utama responden adalah topik Elektrik iaitu topik ke tujuh belas dalam sukatan pelajaran fizik program matrikulasi. Dengan pembangunan modul amali RASPHY yang menggunakan teknologi Raspberry Pi adalah diharapkan dapat membantu pelajar dan pensyarah dalam meningkatkan pencapaian, sikap terhadap STEM dan minat pelajar matrikulasi dalam topik Elektrik.
This study aims were to develop a virtual reality learning kit for teaching and learning in Electromagnetic Induction and to determine the perception of the use of the VR video from the perspective of undergraduate Physics students. This research implements development research design by utilizing the ADDIE model which involves five phases which are analysis, design, development, implementation, and evaluation. Convenient sampling techniques were used in this study. A total of 35 undergraduate Physics students in their fifth and sixth semesters of study from one of the public universities in Malaysia were selected. Research instruments used are the expert validity forms and the usability questionnaires. Collected data were then analysed using Statistical Package for Social Science (SPSS) software for validity, reliability, and usability analysis. The findings of the study show that the usability instrument has high reliability with a Cronbach's Alpha value of 0.898. On the other hand, the developed virtual reality learning kits have high validity with 97.0% of the agreement for face validity and 95.1% for content validity respectively while the usability of this virtual reality learning kit is at a high level of agreement with a mean score of 3.37. This virtual reality learning kit helps students in reviewing their lessons on mobile with flexible time. Hence, this will indirectly increase students' motivation to learn the topic of electromagnetic induction in an interesting and fun environment.
This work describes computerized data acquisition system for current-voltage (I-V) characteristics of diodes. The proposed system consist of a personal computer pre-installed with LabVIEW, two units of power supply, an interface board, current and voltage sensors. Two devices under test (DUTs) are selected namely 1N4007 silicon and 1N34 germanium diodes. The current flow through the circuit and voltage across the diode is measured and I-V characteristic is successfully plotted. When data acquisition interrupted by the user, real time I-V curve with least-square fitting is plotted. The LabVIEW was employed primarily to display data from sensors and storing collected data for further postmeasurement processing. Estimated forward voltage drop from plotted I-V curve was then compared with the published value from manufacturer's datasheet. Comparison revealed that developed system has been successfully characterized both DUTs base on the forward voltage drop obtained from the plotted I-V curve. Furthermore, proposed system architecture offers extra flexibility where stored data can be manipulated with minimum programming efforts. The application of the proposed system can also be extended for insitu device characterization in various circuits.
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