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.

A Little Light Thinkinglive

Stage: 4 Challenge Level: Challenge Level:1

Here is a machine with four coloured lights. Can you make two lights switch on at once? Three lights? All four lights?

Which Spinners?live

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

Can you work out which spinners were used to generate the frequency charts?

Data Matchinglive

Stage: 5 Challenge Level: Challenge Level:1

Use your skill and judgement to match the sets of random data.

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?