1, 2, 3, and imagine highlighting the whole row marked three. Where the letter column and number row meet, is square C3, which is where you’re standing. That’s called a grid reference.

Use this rainforest game to get some practise using grid references on a map. Follow the instructions to find four locations on the map. As you go, check the meaning and pronunciation of tricky ...

Many books and articles I’ve seen on drawing effective graphs say not to use grid lines ... I show the following example where grid lines are used for visual reference. The grids help to ...