2019 PSLE Maths Semicircle Question That Triggered An Open Letter to the Minister for Education

Updated: Dec 31, 2020

Below is the famous semicircle question that got many P6 students scratching their heads and several parents fuming.

2019 Challenging PSLE Semicircle Question
The (In)Famous Semicircle Question

At first look, this question looks bewildering. After some cogitation, however, you'll find that its complex configuration belies a simple solution.

Challenge your children and let them have a stab at it!

It doesn't require any advanced formulae and manipulations, just basic addition-subtraction and...perhaps a little imagination.

Moral of the story: Keep calm and keep an open mind when tackling non-routine questions.

In the video solution below, we explore 3 ways in which you can go about dissecting the question. Don't be lazy now, watch it only after you've tried the question yourself!

Here's Ahsan (P6 student at the time of recording) demonstrating his thought process.

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