This product includes 2 versions, each with their own answer key, as well as instructions on how to play.
Version 1: Includes only regular verbs
Version 2: Includes only irregular verbs
Answer keys are provided, and work best to display digitally, so students can check their answers quickly, tally up their errors, and determine their total time.
Version 1 takes my 3/4 students about 5 minutes, and Version 2 took about 10 minutes.
Or, you can set a max time for them to finish, and whatever they don't finish in time, could be considered an error. Up to you!