A nice game to play with tag questions. After going through the explanation with students this game works perfectly to help reinforce it. The cards are cut up and placed up side down on the table. Players take turns turning over the cards, the first player who correctly makes a sentence that can link with the tag questions wins the card. Player with the most cards at the end is the winner. This can also easily be turned into a conversation class, with students first making sentence + tag question and then actually discussing the questions.
