Physics Education Research (PER) is a field that focuses on understanding how students learn physics and how to improve teaching methods. Researchers in this area study various aspects of education, including curriculum design, instructional strategies, and assessment techniques. The goal is to enhance student engagement and comprehension in physics. PER often involves the use of experimental and observational studies to gather data on student learning. This research can lead to the development of innovative teaching tools, such as interactive simulations and conceptual assessments, which help educators create more effective learning environments for their students.