Yes — "their" is a Second Grade sight word meaning "belonging to them". It's part of a famous homophone trio with "there" and "they're", all pronounced the same way but spelled and used differently.
The kids left their backpacks by the door.
"Their", "there", and "they're" sound identical but serve entirely different grammatical roles — possession, location, and a contraction of "they are". Because phonics can't distinguish them, children need explicit practice connecting each spelling to its distinct meaning, usually through repeated exposure in varied example sentences.
Teach the trio together with one memory anchor each: "their" has "heir" inside it (something you inherit or own); "there" has "here" inside it (both are places); "they're" has an apostrophe (a contraction clue).
Word Wizard teaches "their" with Flash Cards, Listen & Pick, Spell It, and Write It — four game modes that turn repetition into play.
See "their" with its picture, syllables, and example sentence — with native audio.
Hear "their" spoken aloud and pick it out from similar-looking words.
Build "their" letter by letter from shuffled tiles.
Word Wizard turns sight word practice into a game — Flash Cards, Listen & Pick, Spell It and Write It, from Pre-K through Grade 5.