Yes — "through" is a Fourth Grade sight word. Its seven letters make just two sounds, with a completely silent "gh", making it impossible to sound out reliably.
The dog ran through the open door.
"Through" is often cited as one of the most irregular common words in English — its "ough" makes a long "oo" sound (as in "food"), unlike "though" (long o) or "tough" (short u) despite sharing the same four letters. This word is memorized as a whole shape rather than decoded piece by piece.
Point out how short the actual sound is ("throo") compared to how long the word looks on the page — that mismatch is often what surprises kids most.
Word Wizard teaches "through" with Flash Cards, Listen & Pick, Spell It, and Write It — four game modes that turn repetition into play.
See "through" with its picture, syllables, and example sentence — with native audio.
Hear "through" spoken aloud and pick it out from similar-looking words.
Build "through" 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.