### A Cartesian Puzzle

Find the missing coordinates which will form these eight quadrilaterals. These coordinates themselves will then form a shape with rotational and line symmetry.

### Criss Cross Quiz

A game for 2 players. Practises subtraction or other maths operations knowledge.

### Coordinate Cunning

A game for 2 people that can be played on line or with pens and paper. Combine your knowledege of coordinates with your skills of strategic thinking.

# Coordinate Tan

##### Stage: 2 Challenge Level:

Martha from Tattingstone School sent us a lovely solution for this. She had obviously worked very hard and done some deep thinking.

 1) ( 2, -2) 2) (3.5 , -0.5) 3) (5 , 1) 4) (5 , -2) 5) (3.5 , -3.5) 6) (2 , -5) 7) (-1 , -5) 8) (-1 , 1) 9) (0.5 , 3.5) 10) (5 , -5)
 1) ( -2, 2) 2) (-0.5 , 3.5) 3) (1 ,5) 4) (1 ,2) 5) (-0.5 , 0.5) 6) (-2 ,-1) 7) (-5 ,-1) 8) (-5 ,5) 9) (-3.5 ,0.5) 10) (1 ,-1)

Can you see why the numbers 'swapped around' for the points that Martha has labelled 1, 2 and 3? Can you see why the others are all 'four away from the others'? What does Martha mean by 'swapped around' and 'four away from'? Can you think of a clearer way of saying it?