Mr Ng Wei Lien was a former Math teacher at a local junior college which was recognized for value-adding to students’ education.
Graphical Transformations: Geometric Description When doing graphical transformations, pay special attention to all the asymptotes and intercepts. The asymptotes and intercepts must be transformed accordingly. Example
Trigonometric Ratios: ASTC To remember the different signs in each quadrant, use ASTC. All Science Teachers are Crazy. Printer Friendly  Trigo Ratios ASTC