FM radio is something like a magic box that lets you hear music and talk shows without needing to be in the same place where the music or talk is happening.
Imagine that you have a toy car with a little antenna sticking out of it. When you hold the toy car near a specific kind of box, called FM radio receiver, your toy car antenna can pick up signals that are sent out by a radio station.
These signals are like invisible waves that travel through the air, just like sound can travel through the air from one person's mouth to your ear. But your ear can't pick up the radio station signal waves by itself, so you need a special gadget, called an FM radio receiver, to help you listen to the signal.
The FM radio receiver has a special type of device, called tuning knob, to help you find and listen to a specific radio station. When you turn the knob, it helps your radio pick up just the right frequency of waves that the radio station is sending out.
Then, the radio takes those waves and turns them into sounds that you can hear, just like a magic box that can turn invisible waves into music and speech. Some FM radios even have buttons you can push to save your favorite stations, so you can easily find them again later without having to tune in every time.
That's how FM radio works, and it's a great way to listen to all kinds of music and learn about interesting things happening in your area or even in distant places.