1. Our Objectives
Describe and find the position of a square on a grid of squares.
Recognise simple examples of horizontal and vertical lines.
Recognise positions and directions, e.g. describe and find the position of a point on a grid of squares where the lines are numbered.

2. 8 7 6 5 4 3 2 1 A B C D E F G H
ROWS
numbers
letters
COLUMNS

3. go along the hall before...8 7 6 5 4 3 2 1 A B C D E F G H D6
you go up the stairs! G3
go along the hall before...

4. Now it's your turn 8 7 6 5 4 3 2 1 A B C D E F G H C8 G7 H4 B3 E1

5. X vertical Now look at this grid What is different? horizontal8
coordinates are always written in brackets, with a comma between each number 7 6 5
What is
different?
vertical 4
the number on the horizontal axis is always written first, then the number on the vertical axis 3 X
Now look at this grid
(3,2) 2 1 1 2 3 4 5 6 7 8
horizontal
What is the position of this cross?
(0,0) is called the origin

6. Who can point to…… 8 7 X
(7,3) 6
(3,7) 5
(2,1) 4 X
(1,2) 3 X X
(4,3) 2 X 1 X
(3,4) 1 2 3 4 5 6 7 8

7. Draw an 8 x 8 grid on squared paper.
Group1
Draw an 8 x 8 grid on squared paper.
Plot the following coordinates on the board: (0,5), (2,3), (4,1), (5,0).
Join the points with a ruler.
What word do we use to describe the line you’ve drawn?
Groups 2 and 3
Use the 8 x 8 grid.
Plot the following coordinates on the board: (0,5), (2,3), (4,1), (5,0).
Join the points with a ruler.
What word do we use to describe the line you’ve drawn?

8. What other points lie on this diagonal line?
(0,5)
(2,3)
(4,1)
(5,0) 8 7 6 5 X 4 X
This is a diagonal line. 3 X 2 X
What other points lie on this diagonal line? 1 X
(3,2) X 1 2 3 4 5 6 7 8
(1,4)

9. Over to you... Group1 Groups 2 and 3
Draw an 8 x 8 grid on squared paper.
Plot 3 corners of a square.
Give your grid to a friend.
Can they tell you the coordinate for the last corner of the square?
Do more squares.
Groups 2 and 3
Use the 8 x 8 grid.
Plot 3 corners of a square.
Give your grid to a friend.
Can they tell you the coordinate for the last corner of the square?
Do more squares.

10. What are these coordinates?8 7 X
(5,7) 6
What shape would be drawn if these coordinates were joined together? 5 4 X
(2,4) 3 X
(7,3) 2 1
A triangle! 1 2 3 4 5 6 7 8

11. WINK