Recently, Grade 9 physics classes have been focusing on electromagnetism. Through experiments, students analysed the characteristics of magnetic forces and explored the distribution patterns of magnetic fields. This week, the curriculum adopted an "analogical reasoning" approach, integrating magnetic and electric field knowledge. Using online simulations, students precisely recreated interactions between charges, visually observing the direction and intensity of electric forces. Abstract concepts became tangible as invisible electric fields were visualized through electric field lines. Classroom discussions buzzed with excitement as students debated the scientific principles behind these phenomena.