One method, used in a number of schools, involves the use of special tokens. Teachers hand out "smiley tokens" to reward good performance, and "sad tokens" to those who are doing poorly.
以當時已經有很多學校實施的「代幣法」來說，老師可以用「笑臉代幣」鼓勵表現好的學生，學生若表現不佳時就發給他一枚「哭臉代幣」。