I started to teach Crystal in 2010. The parents knew me from Tan ZiLiang's mother. Like most of my students, she get good result in Primary, but the result drops in Sec1 and Sec2. Now her result is better in Sec 3.
Crystal's Math Test Result
http://blog.singaporestudent.com/2011/05/crystals-maths-test-she-gets-1620.html
