Probability and Data

http://https://nrich.maths.org/1783 I’m thinking of a number. My number is both a multiple of 5 and a multiple of 6. What could my number{...}

Students are asked to use the set of numbers on the sheet to make 1000 in 4 steps. The sheet{...}

https://nrich.maths.org/636/note   The 24 Game Why do this problem? Many people are familiar with the ‘four fours’ problem, in which{...}