In the chemistry experiment class, the teacher guided students in conducting the "Elephant Toothpaste" experiment. First, hydrogen peroxide solution was slowly poured into a conical flask, followed by an appropriate amount of dish soap, gently shaken, and then purple dye was added and stirred evenly. When the potassium iodide catalyst was added to the flask, yellow-purple gradient foam instantly erupted from the mouth of the bottle, forming a continuously expanding column. Through this hands-on practice, everyone enhanced their abilities in observation, recording, teamwork, and scientific inquiry, sparked an interest in exploring the mysteries of chemistry, and realized the close connection between scientific knowledge and real life.