If you compare electricity to water flowing through a pipe then;
Amps: Would be the volume of water flowing through the pipe.
Voltage: Would be the water pressure in the pipe.
Watts: Would be the power (volts x amps) the water could provide.
If you compare the flow of electricity the powers an electric motor to the flow of water being used to power a flour mill then;
Amps: Is a measure of how fast the electrical current flows.
Volts: Is a measure of the how strong the electrical force is.
Watts: Is a measure equal to one volt-ampere or how much power is released every second.