☆2. Learn to think in class: Why? Suppose ... what?

★3. Ask the teacher questions after class

★4. Do more reference books after class and concentrate on reading one of them, which will be significantly improved (even if there is no obstacle in electricity, the proficiency should be improved accordingly to save the examination time. (Recommended Bibliography: Challenge the High Score of Physics Classics in Junior High School)

☆5. Try to connect electricity with "water": for example, current-water flow; Among the resistances, the resistance increases with the decrease of conductor section-the resistance of water flow increases with the narrowing of river channel; Simplified circuit (equivalent method and mobile node method)

★-Must be completed

Do your best.

To sum up, xxxxxxxxxx,

If you have any questions, please ask.