11+ Maths: Using Coordinates: Including Coordinate Graphs (GL & CEM style)
26 October 2026
Understanding coordinate grids
Coordinate grids are used in 11+ maths to help children locate points and shapes. Each point is written as (x, y), where x is how far across and y is how far up. This skill is tested in both GL and CEM style questions.
Reading and plotting points
To read a coordinate, always start with the x-value (across), then the y-value (up). For example, (3, 5) means 3 units across and 5 units up. Encourage your child to sketch a grid and label the axes clearly before plotting points.
GL and CEM style questions
Typical questions include finding missing corners of shapes, plotting points, or interpreting simple graphs. Children may also be asked to reflect or translate points on the grid. Visualising the grid and using shape properties are key skills for success.
Worked example
Three corners of a rectangle are at (2, 1), (5, 1), and (5, 4). What are the coordinates of the fourth corner?
Step 1: List the x and y values of the given points.
Step 2: Notice that two points share the same y-value (1) and two share the same x-value (5).
Step 3: The missing corner will have the x-value from the point that is not matched (2) and the y-value from the point that is not matched (4).
So, the fourth corner is at (2, 4).
Key insight: Encourage your child to sketch the points and look for patterns. In rectangles with sides parallel to the axes, the missing corner always takes its x-value from one point and its y-value from another.
Tips for parents
Remind children to double-check the order of coordinates, and to label axes. Practise with a mix of shapes and simple graphs to build confidence before the exam.
