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 your school's name. If you'd like to know more about what we're looking for, read this short article.

The last day for sending in solutions to these live problems is Monday 6 December.

Minimal Connectorlive

Age 14 to 18
Challenge Level

Can you find the most efficient way to connect four towns?

Waste and Recyclinglive

Age 14 to 18
Challenge Level

Can you use the given information to work out how much plastic a family recycles?

Frosty Is Melting!live

Age 14 to 16
Challenge Level

Frosty the Snowman is melting. Can you work out how much less snow he contains when he is at half his starting height?

A Frosty Puddlelive

Age 16 to 18
Challenge Level

Can you draw a sketch of how Frosty's volume changes as his height decreases?

Frosty the Snowmanlive

Age 16 to 18
Challenge Level

Frosty the Snowman is melting. Can you use your knowledge of differential equations to find out how his volume changes as he shrinks?