Working systematically

This task develops spatial reasoning skills. By framing and asking questions a member of the team has to find out what mathematical object they have chosen.

What is the smallest number of answers you need to reveal in order to work out the missing headers?

Here's a strategy game with lots to explore. Can you find out enough to guarantee a win, no matter what the settings?

The Number Jumbler can always work out your chosen symbol. Can you work out how?

Can you use the clues to complete these 4 by 4 Mathematical Sudokus?

There are three tables in a room with blocks of chocolate on each. Where would be the best place for each child in the class to sit if they came in one at a time?

Arrange the four number cards on the grid, according to the rules, to make a diagonal, vertical or horizontal line.

The sum of the numbers inside an envelope is written on the outside. What could the numbers be?

On the graph there are 28 marked points. These points all mark the vertices (corners) of eight hidden squares. Can you find the eight hidden squares?

Can you make doughnuts by matching these fractions, decimals and percentages?