We usually use squares to measure area, but what if we use triangles instead?
In the 2020 Olympic Games, sport climbing was introduced for the first time, and something very interesting happened with the scoring system. Can you find out what was interesting about it?
Investigate how you can work out what day of the week your birthday will be on next year, and the year after...
Can you explain the strategy for winning this game with any target?
Identical squares of side one unit contain some circles shaded blue. In which of the four examples is the shaded area greatest?
In how many ways can you arrange three dice side by side on a surface so that the sum of the numbers on each of the four faces (top, bottom, front and back) is equal?
How many moves does it take to swap over some red and blue frogs? Do you have a method?
Which set of numbers that add to 100 have the largest product?
What do you notice about the sum of two identical triangular numbers?
Square numbers can be represented as the sum of consecutive odd numbers. What is the sum of 1 + 3 + ..... + 149 + 151 + 153?
