Grammar Detective
Students read a short passage and find the error. Every answer returns an immediate right/wrong result and the corrected sentence.
Find the errorThis is the play-now page: open a game on the projector or on student Chromebooks and start in under ten seconds. No account, no setup, no download.
This page is for playing right now. If you are planning instead of playing, start here:
Each one runs in the browser, scores every answer instantly, and can be replayed as many times as you like.
Students read a short passage and find the error. Every answer returns an immediate right/wrong result and the corrected sentence.
Find the errorFast rounds of correct-versus-incorrect sentences. Students choose quickly, which forces recognition rather than rule recitation.
Speed recognitionA timed run through mixed grammar items. Good as a five-minute closer or a friendly whole-class competition on the projector.
Timed reviewNo accounts, no codes, no roster upload. Open the link and the game runs.
Every item is scored the moment a student answers, with the correct form shown.
Items reshuffle on each run, so the same game works as a warm-up on Monday and a closer on Friday.
Chromebooks, iPads, phones, or the classroom projector — it is a plain web page.
Put one game on the board and let the class call out answers for the first five minutes.
Send the link during independent work while you conference with individual students.
Keep the link posted so students who finish early have something worth doing.
These pages help you decide what to run and when.
Three free, no-login grammar games teachers can project or assign in class: Grammar Detective, Error Smash, and Speed Challenge. Play instantly in any browser.
This is the play-now page: open a game on the projector or on student Chromebooks and start in under ten seconds. No account, no setup, no download.
Use these Grammar Spy activities as bell ringers, station rotation tasks, independent practice, homework alternatives, or quick review before writing and assessment work.
The games are free forever. The lesson slides, worksheets, and answer keys live in the Teacher Vault.
Explore more grammar lessons, worksheets, and classroom activities from Grammar Spy.