Yes — "my" is one of the first Pre-K sight words. Its "y" makes a long "i" sound, a pattern beginning readers haven't usually learned yet, so it's taught by sight first.
This is my favorite toy.
"Y" acting as a vowel (making a long "i" sound at the end of a short word) is a phonics pattern most children don't learn formally until later — so "my" is introduced as a sight word well before the underlying rule is explicitly taught, simply because it's used so often in early sentences about ownership.
Practice "my" alongside "I" since they're often used together in a young child's earliest sentences — "I have my toy", "I see my mom".
Word Wizard teaches "my" with Flash Cards, Listen & Pick, Spell It, and Write It — four game modes that turn repetition into play.
See "my" with its picture, syllables, and example sentence — with native audio.
Hear "my" spoken aloud and pick it out from similar-looking words.
Build "my" 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.