GCSE graph paper (2 mm)

Why the grid has three line weights

Each small square is 2 mm. Every fifth line is bolder, marking whole centimetres, and every tenth line is heavier again, marking 2 cm blocks. The bolder lines let you count quickly in fives and tens instead of counting tiny squares one by one, which is where most plotting slips happen. This sheet uses the same arrangement as the graph grids printed in UK maths and science exam papers, so practising on it feels like the real thing.

Choosing a scale

Look at the smallest and largest values you need on each axis, then pick a scale that uses at least half of the grid in each direction. A graph squeezed into one corner is hard to read and harder to mark. Good scales go up in steps that are easy to split into small squares: 1, 2, 5 or 10 units per 2 cm block. Awkward steps such as 3 or 7 units per block make every point a mental division.

The two axes do not need the same scale. A distance–time graph might use 1 cm for 1 minute across and 1 cm for 100 metres up. If both axes need negative values, put the origin where the bolder lines give you room on both sides.

Plotting points accurately

1. Work out what one small square is worth on each axis before you start (for example 0.2 units).
2. Count along the x-axis using the bold centimetre lines, then the small squares.
3. Count up the y-axis the same way and mark the point with a small, neat cross (×), not a large dot.
4. Check two or three points again before drawing any line through them.

Lines and curves of best fit

For a straight-line graph from an equation, plot at least three points: two fix the line and the third checks it. Use a ruler and draw one continuous line through the full range asked for.

For scatter graphs, a line of best fit follows the trend with roughly as many points above as below. It does not have to go through the origin or through any particular point. For curves such as quadratics, draw one smooth freehand curve through the points; do not join them with straight segments, and turn the paper so your hand moves naturally around the bend.

Labelling the axes

• Label each axis with the quantity and its unit, such as ‘Time (s)’ or ‘Temperature (°C)’.
• Number the bold lines at equal steps, not the plotted values themselves.
• Give the graph a title if the question asks for one.
• Write numbers on the lines, not in the spaces between them.

Printing at actual size

Download the PDF and print with the scale set to 100% or Actual size; switch off Fit to page. Then check with a ruler: ten small squares should measure exactly 2 cm, and the full grid is 18 cm wide and 26 cm tall. If it measures less, the printer has shrunk the page and your scale readings will be slightly off. Plain 80 gsm A4 is fine; avoid draft mode, which can make the fine lines too faint.