Happened to think of 1 actual incident at school when I was teaching in d kitchen. It goes like this, " Cher! Why my porridge burnt? " I was teaching my pupils to cook chicken porridge. So his Homec partner says, "Eh, Miss Yip say to boil ur porridge, she didn't ask u to burn it?. How come u burn the porridge!!!!???" Hmmm..... I guess this is what I call PBL. Problem based learning. So d student replied, " oh ya, boil porridge must use low or medium heat fire , not high fire???"