A game in which players take it in turns to choose a number. Can you block your opponent?
Choose some fractions and add them together. Can you get close to 1?
Draw some angles inside a rectangle. What do you notice? Can you prove it?
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?
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?
