David Ong

A teacher by profession teaching physics and previously mathematics at form 6 level here. A person with many interests ranging from photography, gardening, languages, ethnolgy, science and especially faith in God.


23,581 students helped

Level 2 in Algebra Level 2 in Calculus Level 1 in Prealgebra Level 1 in Precalculus
10 Answers 2 Edits