A game for two people, or play online. Given a target number, say 23, and a range of numbers to choose from, say 1-4, players take it in turns to add to the running total to hit their target....

This activity focuses on doubling multiples of five....

How many solutions can you find to this sum? Each of the different letters stands for a different number....

How many ways can you find to do up all four buttons on my coat? How about if I had five buttons? Six ...?...

Can you do a little mathematical detective work to figure out which number has been wiped out?...

Can you explain the strategy for winning this game with any target?...

This interactivity invites you to make conjectures and explore probabilities of outcomes related to two independent events....

If you split the square into these two pieces, it is possible to fit the pieces together again to make a new shape. How many new shapes can you make?...

Nearly all of us have made table patterns on hundred squares, that is 10 by 10 grids. This problem looks at the patterns on differently sized square grids....

By rapidly analyzing large amounts of data and making accurate predictions, artificial intelligence (AI) tools could help to answer many long-standing research questions. For instance, they could help to identify new materials to fabricate electronics or the patterns in brain activity associated...