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Published bySofia Maher Modified over 3 years ago

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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.

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

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**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...

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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

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**X vertical Now look at this grid What is different? horizontal**

8 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

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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

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**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?

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**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)

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**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.

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**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

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