You may also like

problem icon

Count the Digits

In this investigation we are going to count the number of 1s, 2s, 3s etc in numbers. Can you predict what will happen?

problem icon

National Flags

This problem explores the shapes and symmetries in some national flags.

problem icon

The Olympic Flame: Are You in the 95%?

95% of people in Britain should live within 10 miles of the route of the Olympic Torch tour. Is this true?

Spot Thirteen

Stage: 2 Challenge Level: Challenge Level:1

On the grid below, choose $13$ spots by clicking on them.

You will see that as you click more spots, your score changes.

Can you work out how the scoring system works?  We would love to hear what you did in order to test out your ideas.

Which spots should you choose to produce the maximum possible score?  How do you know that this is the maximum?

 

This text is usually replaced by the Flash movie.