grid

Everyday

1. A grid is a pattern of straight lines crossing each other to make squares. tree →
2. (maths) A grid is used for maps, graphs and coordinates to find a place by numbers or letters. tree →
3. The grid (or national grid) is the network of wires that brings electricity to homes. tree →
4. A grid is a metal frame of bars, such as over a drain. tree →

In the lessons

In maths lessons grids help with multiplication (grid method), coordinates, area by counting squares and arrays. In geography map grids locate places. Phrases: «grid reference», «on the grid», «off the grid», «the grid method».

Examples

• Plot the point (3, 4) on the grid. tree →
• Count the squares on the grid to find the area. tree →
• The map grid helps us find the castle. tree →
• Use the grid method to multiply 23 × 4. tree →
• The cabin is off the grid with no electricity. tree →
• A 5 by 6 grid has how many squares? tree →

Note

Countable. Coordinates on a grid: go across first, then up («along the corridor, up the stairs»). A grid of r rows and c columns has r × c squares. «Off the grid» means not connected to public power.