Phonics is the science of sound. It’s also a way of teaching reading by focusing on how letters and groups of letters of the alphabet look and sound.
Phonics comes from the Greek word phone for "sound." Phone is a familiar word as the thing you talk to people on, but it also shows up in other sound-related words like phonology (the scientific study of sounds in languages) and phonograph (an old device for playing music). Phonics is a way of teaching beginning readers to match letters and sounds. By associating letters with sounds, phonics helps people hear and say the words they’re seeing on the page.