Explain why an ebony stick can be frictionally charged while holding it in your hand, but a metal one cannot be loaded without a rubber glove. As you explain, remember that the human body is a vehicle.
The ebony stick is a dielectric, so the charges do not move along the stick, the metal is a conductor, it will be grounded through the human body.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.