Student responses to the functions associated with the watermill and the light bulb.
| Watermill | Function |
| Type 1 | Resistance The water in the watermill becomes weaker, and the electric current in the light bulb becomes weaker Degree of obstruction to flow |
| Type 2 | When a light bulb receives electric current, the entire body is affected It shines Turns on when current flows Make something work Current (water) turns on (circulation) Where electric current affects Purpose Where to use Result Final destination Indicates |
| Type 3 | Allows you to know whether electricity is flowing in an electric circuit and at what intensity Check if water is flowing Ground for electricity to flow You can know the strength of water pressure |
| Type 4 | Role in using energy(current) Receive(use) energy |
| Type 5 | Allows water to flow well |