Live Problems - Stage 4 & 5

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.

Stage 4 & 5 Toughnutslive

Stage: 5 Challenge Level: Challenge Level:1

These Stage 4 and 5 problems haven't been solved yet. Can you be the first?

Who's Who?live

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

Can you solve the clues to find out who's who on the friendship graph?

Connecting the Utilitieslive

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

Can you find a way to connect each house to the utilities without any pipes crossing?

Can You Traverse It?live

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

How can you decide if a graph is traversable?

Can You Find... Cubic Curveslive

Stage: 5 Challenge Level: Challenge Level:1

Can you find equations for cubic curves that have specific features?

Curvy Cubicslive

Stage: 5 Challenge Level: Challenge Level:1

Use some calculus clues to pin down an equation of a cubic graph.