I'm thinking of a number. My number is both a multiple of 5 and a multiple of 6. What could my number be?
On the graph there are 28 marked points. These points all mark the vertices (corners) of eight hidden squares. Can you find the eight hidden squares?
These points all mark the vertices (corners) of ten hidden squares. Can you find the 10 hidden squares?
This cube has ink on each face which leaves marks on paper as it is rolled. Can you work out what is on each face and the route it has taken?
How will you decide which way of flipping over and/or turning the grid will give you the highest total?
A game in which players take it in turns to choose a number. Can you block your opponent?
How many solutions can you find to this sum? Each of the different letters stands for a different number.
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?
Can you explain the strategy for winning this game with any target?
Play the divisibility game to create numbers in which the first two digits make a number divisible by 2, the first three digits make a number divisible by 3...
