Practical demonstrations are hands-on presentations that show how something works or how to perform a specific task. They are often used in educational settings, such as classrooms or workshops, to help learners understand concepts through real-life examples. For instance, a science teacher might conduct a chemical reaction experiment to illustrate principles of chemistry. These demonstrations can also occur in various fields, including cooking, engineering, and medicine. In a cooking class, an instructor might demonstrate how to prepare a dish, allowing students to see techniques in action. This approach enhances learning by engaging participants and providing visual and tactile experiences.