The grid below has letters along the top and numbers down the side, and a little ship is hiding in one of the squares. How could you tell a friend exactly which square the ship is in, so they look in the very same place and not somewhere close by?

Watch how a grid reference is read: the letter across the top first, then the number down the side. Notice that the letter always comes before the number.

Today we work through these squares together on the board. We have a tree at one square, an anchor at another and a star at a third. We will name each one in turn: the tree, then the anchor, then the star. For each one, say the column letter across before the row number.

This board grid is bigger than the one you drew in your copy. It reaches across to column F and down to row 6, so there are squares like B6 that your smaller grid did not have. We work through these together on the board: first find C4, then find A1, then find the hidden ship, then find B6. Each one is a step trickier than the last, so read the letter across before the number every time.