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Pemahaman konsep peserta didik pada pembelajaran fisika materi Suhu dan Kalor masih rendah, karena hal tersebut dibutuhkan perangkat pembelajaran dan model pembelajaran yang tepat agar dapat meningkatkan pemahaman konsep tersebut. Penggunaan perangkat pembelajaran RPP, LKPD, dan instrumen penilaian menggunakan model Problem Based Learning (PBL) dinilai mampu meningkatkan pemahaman konsep peserta didik. Berdasarkan hal tersebut tujuan dari penelitian ini yaitu mengetahui kelayakan dari perangkat pembelajaran fisika pada materi Suhu dan Kalor menggunakan model Problem Based Learning untuk meningkatkan pemahaman konsep peserta didik. Jenis peneilitian ini adalah penelitian dan pengembangan (Research and Development) menggunakan model 4D yang terdiri dari tahapan define (pendefinisian), design (perancangan), develop (pengembangan), dan disseminate (penyebaran). Instrumen yang digunakan dalam penelitian ini yaitu lembar validasi yang diberikan kepada validator untuk menilai perangkat pembelajaran yang telah dikembangkan. Hasil dari penelitian ini diperoleh bahwa perangkat pembelajaran fisika pada materi Suhu dan Kalor menggunakan model Problem Based Learning untuk meningkatkan pemahaman konsep peserta didik yang telah dikembangkan dinyatakan sangat layak digunakan.

This study discusses the challenges of virtual learning experienced by students during the Covid-19 pandemic in Malaysia and Indonesia. The objective of this study is to examine the problems and challenges faced by students during the teaching and learning process online. This qualitative study involved document analysis and interviews of 20 students through the WhatsApp video application. Findings of the study show that digital teaching during the outbreak of the Covid-19 pandemics is a significant challenge borne by students. This learning need is in line with the seriousness of the Malaysian and Indonesian Governments in producing an educated generation among students regardless of time and place. Implications, teachers play an important role in determining 21st-century learning outcomes. In addition to challenges such as providing understanding to teachers and students to practice standard operating procedures (SOPs), the assessment process of students and teachers also faces external challenges from parents and society. If in the past 21st-century learning emphasized student-centered learning but now changed to teacher-centered teaching. In addition to challenges such as providing understanding to teachers and students to practice standard operating procedures (SOP), the assessment process of students also faces external challenges from parents and the community. If in the past 21st-century learning emphasized student-centered learning but now changed to teacher-centered teaching.

There are many difficult topics to teach directly in physics learning. Some concepts are abstract or difficult to show one by one. Not a few studies that use applications or media that serves to help the learning process. However, most of the media is offered use some of the most complex and complicated new apps. Even sometimes it’s make difficult for teachers. To overcome this, this study offers learning media using spreadsheets that simple and easy. Topics in this study is simple harmonic motion in physics lessons. The method is used VBA in Microsoft Excel. Sample of this research were 86 student on pre service students from Tanjungpura University. They were given a task to make this simulation and interviewed as randomly to know their motivation on physics learning. As the result, we created a studying media to simulate harmonic wave motion that can be varied according to the needs of teachers during the learning process. Their motivation also increase to learn more about physics simulation. The practical application of this paper is helping teacher to teach physics more effective especially in visualizing of simple harmonic motion. This article also adds intellectual property to easy and effective simulation-based learning. &nbsp