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I notice many students forget how discriminant works! I think I should inform A-level students that they need to know how it works and that is one thing they should not return to their O-level [...]

This is a video of an arithmetic challenge that took place in China in 2015. It is China against Japan, and the title is called the best brain of China. I shared a video on arithmetic previously, [...]

I received this from a student of mine who was really confused with the transition from line 2 to line 3. Students should give it a thought before reading my explanation below. Firstly, my [...]

A few weeks back, I conducted a weekend of lessons on the modulus sign (or absolute value sign) with all my JC2. Its to prepare them for the upcoming prelims and A-levels. Many students till [...]

Many of my students seem to be impressed with my method of doing partial fractions, and after I explain to them, I think they all can conclude that it is nothing more than kindergarten math [...]

This is a classical mathematical fallacies. At hindsight, everything looks perfectly fine. The mistake is in line 5. This is quite similar to the one we discussed previously. We took the [...]

The sign definitely can cause a lot of confusion for students. For starters, and the list goes on. So my focus today is to explain when to put while dealing with . First, lets recognise a few [...]

Writing a GP essay is always a daunting task if you are not prepared or worse, do not know how to start. Here is a step-by-step guide on how to tackle a GP essay question. 1. Understand the [...]

This is a classical mathematical fallacies. At hindsight, everything looks perfectly fine. This is a rather difficult one as the error is actually hidden in the second last line! The mistake here [...]

This is a classical mathematical fallacies. At hindsight, everything looks perfectly fine. So did you manage to spot the error? It is at line 5, where we divide both sides of the equation by . [...]