Author Archives: Ai Ling Ong

E-Maths: Mensuration Formula Sheet

I have compiled a 'cheat sheet' to find volume and surface area of

  • cube
  • cuboid
  • prism
  • cylinder
  • pyramid
  • cone
  • sphere

This will be a quick summary for all students taking their O-Level examinations and school examinations. This will be useful for E-Maths students as the new syllabus includes a real life application question which can be testing on concepts involving these figures. It will be helpful for A-Maths students as well especially in their Differentiation proving questions. On top of that, A-Level H1/H2 students will benefit from it as well since it could required in their calculus proving questions too.

mensuration-formula-sheet

A-Maths: Forming a Polynomial Equation, Given its Roots

It is simple to follow the steps of solving a cubic equation which includes finding the linear factor by using calculator and the quadratic factor by long division or comparing coefficient.

However, when the question is asked in another manner in which the solutions are given and the polynomial equation is to be formed. Some students might be at a lost of how to start the question.

I share with you on how we approach this style of question below:

Forming Polynomial Equation

 

The 2 Methods to Solve Exponential Equations

There are two methods to solve exponential equations:

  1. Take ln on both sides 
  2. Substitution 

Students must know which method to use when solving an equation. Generally, we take ln on both sides when there is just a single exponential function and we use substitution when there is a common term.

Let's take a look at the examples:

Methods to Solve Exponential Equations

 

A-Maths: Differentiation Application - Stationary Value [Video]

Differentiation - Find Minimum Gradient of Curve Question

I received this question on finding minimum gradient of a curve and it is confusing for many students as they probably lack the flexibility in seeing gradient beyond dy/dx.

I have presented this question in a slightly different manner by reducing the usage of  first derivative (dy/dx) and second derivative (d^2y/dx^2).

Check the 3 minutes video by clicking on the video to find out the step-by-step solutions and the explanations.

Video URL: https://youtu.be/K5-LaQUXo94

2015 O-Level Results Release on 11 January 2016

  • The results of the 2015 Singapore-Cambridge General Certificate of Education Ordinary Level (GCE O-Level) examination will be released on Monday, 11 January 2016.

 

  • School candidates may collect their results from their schools at 2.00 pm on 11 January 2016.

 

  • Private candidates will be notified of their individual results by post. The result slips will be mailed on 11 January 2016 to the address provided by the candidates during the registration period. Private candidates who are eligible for SingPass can also use their SingPass account to obtain their results online via the internet Examination Results Release System (iERRS) on Singapore Examinations and Assessment Board’s website at www.seab.gov.sg from 2.00 pm on 11 January 2016.

Source: http://www.moe.gov.sg/media/press/2016/01/release-of-2015-singapore-cambridge-gce-o-level-examination-results-and-2016-joint-admissions-exercise.php