February 18, 2020

[P6 Fractions/Constant Difference]: Zachary's present age is 1/5 of his uncle's. His uncle will be 52 years old in 7 years' time. In how many years' time will Zachary be 1/4 of his uncle's age?

January 29, 2020

In view of the current Wuhan coronavirus (2019-nCoV) outbreak, it is prudent to be familiar with the suggested precautionary measures from the health authorities. Below is a health advisory from the Ministry of Health (26/01/2020):

Travellers and members of the public...

January 28, 2020

[S3 A-Maths: Combinatorics] Kept you waiting, huh? Haha.

This puzzle, in itself, can be solved by taking advantage of combinatorics. By associating pattern cycles to these numbers, it's banking on the odds that the number chains are relatively small. If they are small e...

January 22, 2020

[P6 Whole Numbers]: William and Harry have some stamps in their albums. If William gives 12 stamps to Harry, both boys will have the same number of stamps. If Harry gives 6 stamps to William, Harry will have 1/3 as many stamps as William. How many stamps does each boy...

January 15, 2020

[P5/6 Science: Photosynthesis/Cells]: Photosynthesis is a process through which light energy is absorbed by plants and other organisms to convert carbon dioxide, water and minerals into oxygen and energy-rich organic compounds such as sugars. It occurs most widely in p...

December 31, 2019

Here's an interesting puzzle:

A cabinet with ten drawers, each numbered 1 to 10, stands in an otherwise empty room in a prison. The warden enters the room, writes the name of 10 different inmate numbers on separate cards & distributes the pieces randomly so that each dr...

December 17, 2019

[S1 Science / S3 Physics: Density and Buoyant Force]

Hey, happy holidays!

You might have seen a while ago that your friends were toying around with a stickman that comes to life. How is that possible? Well, only one way to find out, isn't there?

Steve Mould is here to giv...

December 3, 2019

[P6 - S2 Maths: Circles] Hey, hope you enjoyed the two-week suspense. Please don't agonise over it like my kids did.

Kept you waiting, huh? Haha. Here's the solution as promised:

Wow, that's a mouthful! Thankfully, Professor Ben Sparks has a much more geometr...

November 19, 2019

[Pri6 / Sec2 Maths: Circles] Hey, here's a brainteaser for you:

A prey is floating in the middle of a circular lake. A predator is prowling around the bank. The predator can run four times faster than the prey can swim, and the predator, hungry as it is, will always po...