Secondary Live Problems

Each time you visit the NRICH site there will be some activities which are 'live'. That means we are inviting you to send us your solutions and we will publish a selection of them, along with your name and school. If you'd like to read more about what we're looking for, read this short article.

This set of tasks will stop being live on Friday 13 July. 

Gibraltar Geometrylive

Stage: 3 Challenge Level: Challenge Level:1

Take a look at the photos of tiles at a school in Gibraltar. What questions can you ask about them?

Pocket Moneylive

Stage: 3 Challenge Level: Challenge Level:1

Which of these pocket money systems would you rather have?

Same Answerlive

Stage: 3 Challenge Level: Challenge Level:2 Challenge Level:2

Aisha's division and subtraction calculations both gave the same answer! Can you find some more examples?

Farey Sequenceslive

Stage: 3 Challenge Level: Challenge Level:2 Challenge Level:2

There are lots of ideas to explore in these sequences of ordered fractions.

Mediant Madnesslive

Stage: 4 Challenge Level: Challenge Level:2 Challenge Level:2

Kyle and his teacher disagree about his test score - who is right?

Farey Neighbourslive

Stage: 5 Challenge Level: Challenge Level:2 Challenge Level:2

Farey sequences are lists of fractions in ascending order of magnitude. Can you prove that in every Farey sequence there is a special relationship between Farey neighbours?

Ford Circleslive

Stage: 5 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3

Can you find the link between these beautiful circle patterns and Farey Sequences?

Secondary Toughnutslive

Stage: 3, 4 and 5 Challenge Level: Challenge Level:1

These secondary problems have not yet been solved. Can you be the first?