Ms Janice Chuah, 43, teaching a class at Concept Math Education Centre, which she founded. Revenue has hit $1 million a year for the past few years.
Caption: 
Ms Janice Chuah, 43, teaching a class at Concept Math Education Centre, which she founded. Revenue has hit $1 million a year for the past few years.
Credits: 
ST PHOTO: LIM YAOHUI