About this tool

Preposition Challenge Generator throws out a place, a date or a time and asks students to fill in the preposition — in, on or at — before revealing whether they got it right. It targets one of the most persistently confusing corners of English grammar, the kind of small mistake that survives years of otherwise fluent speech. Read the prompt aloud, take a quick answer from the class, then reveal and move straight to the next one. You can work through a dozen prompts in the time it would take to write out a single worksheet.