al.pha.nu.mer.ic

origin: alphabetic + numeric

first used: 1950

5Sk are exploring alphanumeric grids today. Each square on a grid is called a cell. A cell can be named using a grid reference. When a letter is combined with a number to name a cell it is known as an alphanumeric code.

We label the horizontal locations along the bottom of the grid with letters from left to right. The vertical locations are named with numbers from the bottom to the top.

When we read a alphanumeric code we start with the letter and then the number. We can remember this by saying ‘we crawl before we walk.’

Larry the bull is at C3

Rodney the rooster is at B2

Where are the eggs?