Like all good English teaching activities, the 21 game has its origins in a drinking game. The idea is very simple to explain and is a good activity to review numbers. It's suitable for any level: you can spend 20 minutes playing it in an Elementary class, or just use it as a warm up for Junior or Senior High.
- Get the class into small groups - lunch groups are perfect.
- The students in each group janken to establish who goes first.
- The first student says from one to three numbers in succession, but must say at least one. The second student does likewise, as does each student in turn, so for example:
- Student A: "1, 2, 3."
- Student B: "4."
- Student C: "5, 6."
- Student D: "7, 8, 9."
- Student A: "10." ...and so on...
- The student who says 21 has to drink two fingers, or if no alcohol is around is just the loser.
- Repeat as desired.