18-May-15Created by Mr. Lafferty Maths Dept. Coordinates Plotting Coordinates Coordinates Different Grids Proper Names Extending

18 Apr 202318 Apr 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.

Coordinates

Plotting Coordinates

CoordinatesCoordinatesw

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Different Grids

Proper Names

Extending the Grid


Starter QuestionsStarter Questionsw

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1. A TV has be reduced in the sale

by 20%. I t was £ 250. How much is it now.

2. 3×5+36÷9

3. Find two number that multiply to give 10 and

subtract to give 2.

18 Apr 202318 Apr 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.ww

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1.1. To be able to read a To be able to read a coordinate grid. coordinate grid.

1. To explain how to read coordinate grids.

CoordinatesCoordinatesCoordinates

2.2. To solve problems using To solve problems using grid.grid.


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1 32 540

1

3

2

5

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1 32 540

1

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2

5

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Along

Up Along 1 Up 1 (1,1)

Along 3 Up 1 (3,1)

Along 2 Up 4 (2,4)

(0,2)

(2.5,2.5)

(4,0)

(4,2)

(1,4)

(5,4)


Now try Exercise 1Ch1 (page 2)

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1. Find the perimeter of the rectangle.

3. Find all the missing angles.

2. Calculate (a) 15 - 18 (b) - 7 + 20 (c) - 3 - 9

6

2

100o


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1.1. Draw a coordinate grid.Draw a coordinate grid.1. To explain how draw a coordinate grid and add some points to it. brackets.

CoordinatesCoordinates

2.2. Plot points on a grid Plot points on a grid using using along and up rules.along and up rules.

Plotting Points


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1 32 540

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Along

Up (1,2)

(3,1)

(2,5)

(5,2)

(0,3)

(4,2)

(3,0)

(0,0)

(1,4)

(2,3)


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Along

Up Plot the points

(1,1)

(3,1)

(1,3)

Join up the pointsWhy shape do you get

Square

(3,3)

Different Grids


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1 32 540

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Along

Up Plot the points

(0,1)(2,5)


Triangle

(4,3)

Different Grids


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1 32 540

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1 32 540

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Along

Up Plot the points

(1,0)

(3,4)

(1,4)


Rectangle

(3,0)

Different Grids


Now try Ex 2 & 3Ch1 (page 5)

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CoordinatesCoordinatesDifferent Grids



ww

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What is my shape?

2. Calculate 10% of £ 350

3. Calculate the perimeter of the rectangle.

2cm

5 cm


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1. To explain the proper mathematical names for various parts of the coordinate grid.

1. Know the terms ‘origin’ , x-axis and y-axis.


2. First number is always x-coordinate and second number is always the y-coordinate.

Proper Names


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1 32 540

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Along

Up Plot the point

(4,3)

(2,4)

X

Xx - axis

y - axis

Proper Names

x-coordinate is 4

y-coordinate is 3

x-coordinate is 2

y-coordinate is 4

origin



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CoordinatesCoordinatesProper Names



ww

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2. Find the length of the diameter

of a circle if the radius is 6.5 cm.

3. Calculate 6a+ 5b when a=2 b=3


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1. To show how we can extend the coordinate grid to include negative numbers.

1. Identify main parts of coordinate grid.


2. Understand the negative grid both in y-axis direction and x-axis direction.

Extending the Grid


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We can show we have gone below the axis by using a negative.

Extending the Grid

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-2

1

-1

32

Plot the point(4,3)

(2,-3)x - axis

y - axis

x-coordinate is 4

y-coordinate is 3

x-coordinate is 2

y-coordinate is -3

origin

-3

Write down coordinatesof the other points


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We can further extend the negative grid

Extending the Grid

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1 32 40

-2

1

-1

32

Plot the point(-2,2)

(-4,-2)x - axis

y - axis

x-coordinate is -2

y-coordinate is 2

x-coordinate is -4

y-coordinate is -2

origin

-3

-4 -2-3 -1

Write down coordinatesof the other points



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CoordinatesCoordinatesExtending the Grid

Documents

18-May-15Created by Mr. Lafferty Maths Dept. Coordinates Plotting Coordinates Coordinates Different Grids Proper Names Extending