NUM 18-Feb-16Created by Mr. Lafferty Maths Dept. Perimeter Area & Perimeter Area Counting squares...
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Transcript of NUM 18-Feb-16Created by Mr. Lafferty Maths Dept. Perimeter Area & Perimeter Area Counting squares...
NUM
4 May 20234 May 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.
Perimeter
Area & PerimeterArea & Perimeterww
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sion.
com Area Counting squares
Area Rectangle
Measuring Lengths / Drawing lines
Measuring Angles
4 May 20234 May 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.
Starter Starter QuestionsQuestions
21 32x
Q1. Solve the equation below
Q2. Find the missing angles
Q3. Find the average of the numbers below
Q4. Which is the better deal
ao
bo
2,5,6,7
75% of £ 240
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50% of £ 362or
MNU 2-11b MNU2-11c MTH 3-11b
NUM
4 May 20234 May 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.
Area Counting Area Counting SquaresSquares
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m Learning IntentionLearning Intention Success CriteriaSuccess Criteria
1.1. To understand the term To understand the term area.area.
1 We are learning the term area.
2.2. Find the area by Find the area by counting squares.counting squares.
NUM
4 May 20234 May 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.
Area Counting Area Counting SquaresSquares
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m The area of a shape is simply defined by :
“the amount of space a shape takes up.”
Think of a square measuring 1 cm by 1cm we say it is :
1cm
1cm
1cm2( 1 square centimetre )
NUM
Area by Counting Area by Counting SquaresSquares
4 May 20234 May 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.www.
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m The desks below have been arranged in a certain way. Find the area each design.
NUM
4 May 20234 May 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.
Now try Lifeskills
Ex1 Ch6 (page 50)
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SquaresSquares
NUM
4 May 20234 May 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.
Starter QuestionsStarter Questionsww
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Q2. Convert 23metres to (a) cm (b) mm
Q1. What is the time difference 09:28 and 11:55
Q3. The answer to the question is 180. What is the question.
NUM
4 May 20234 May 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.
Area of a Area of a RectangleRectangle
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m Learning IntentionLearning Intention Success CriteriaSuccess Criteria
1.1. Remember area formula Remember area formula for a rectangle.for a rectangle.
1. Develop a formula for the area of a rectangle.
2.2. Apply formula correctly. Apply formula correctly. (showing working)(showing working)
3.3. Answer containing Answer containing appropriate unitsappropriate units
NUM
4 May 20234 May 2023
Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.
Area of a Area of a RectangleRectangle
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3 1
34 3
2
3
612
X =X =X =
L AB
L
L
LB
B
B
L = lengthB = Breadth
Must learn formula !
1 cm
Area = length x breadthA = L x B
NUM
4 May 20234 May 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.
Area of a Area of a RectangleRectangle
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m ExampleFind the area of the rectangle opposite
L = 9cm
B = 2cm
Area = Length x BreadthA = L x BA = 9 x 2A = 18 cm2
Demo
NUM
4 May 20234 May 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.
Area of a Area of a RectangleRectangle
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m Find the area of the rectangle. 3.5cm
10cmArea = Length x BreadthA = L x BA = 10 x 3.5A = 35 cm2
Demo
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4 May 20234 May 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.www.
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mArea of a RectangleArea of a Rectangle
Now try Lifeskills
Ex2 Ch6 (page 53)
NUM
4 May 20234 May 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.
Starter Starter QuestionsQuestions
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(a) 200 cm (b) 550 cm (c) 50 cm
1. True or f alse 2.3 8 = 184
2. Convert metres (m)
3. Show that
4. Find 2 numbers that add to give 7 and multiply to give 10.
3 of 320 = 2404
NUM
4 May 20234 May 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.www.
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m Learning IntentionLearning Intention Success CriteriaSuccess Criteria
1. Understand the term perimeter of a shape.
1. We are learning the term perimeter of a
shape.
2. Calculate the perimeter of a shape.
PerimeterPerimeter
4 May 20234 May 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.
PerimeterPerimeterww
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What is perimeter ?
Hint answer is on the screen !
MNU 2-11b MNU2-11c MTH 3-11b
NUM
4 May 20234 May 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.PerimeterPerimeter
PerimeterPerimeterww
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4 May 20234 May 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.
Perimeter
PerimeterPerimeterww
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MNU 2-11b MNU2-11c MTH 3-11b
4 May 20234 May 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.
PerimeterPerimeteris the distance round the is the distance round the
outside of aoutside of a 2D shape2D shape
PerimeterPerimeterww
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MNU 2-11b MNU2-11c MTH 3-11b
4 May 20234 May 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.
6cm Calculate the Calculate the perimeter of the perimeter of the rectangle below.rectangle below.3cm
Perimeter = 6 +3 +6 +
3 =18cm
PerimeterPerimeterww
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MNU 2-11b MNU2-11c MTH 3-11b
Demo
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4 May 20234 May 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.
Now try Lifeskills
Ex3 Ch6 (page 55)
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Starter Starter QuestionsQuestions
4 May 20234 May 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.
2 16 28 x
60% of £ 240 = £ 144
Q1. Solve the equation below
Q2. Find two numbers that multiply to give 18and subtract to give 3.
Q3. Explain why the average of the numbers below is 7
Q4. True or false
2,8,8,10
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4 May 20234 May 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.www.
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m Learning IntentionLearning Intention Success CriteriaSuccess Criteria
1.1. Remember the 4 units Remember the 4 units of length.of length.
1 We are learning the 4 metric units of length.
2. Be able to convert between them.
Measuring Lengths Measuring Lengths Drawing LinesDrawing Lines
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m Measuring LinesMeasuring Lines
1 cm
1cm = 10mm1m = 100cm
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m Measuring LinesMeasuring Lines
9cm (90mm)
6.8cm(68mm)
7.2cm(72mm)
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PerimeterPerimeter
4 May 20234 May 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.www.
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m Each square has length 5cm.Calculate perimeter of each design.
5cm5cm
5cm
5cm
NUM
4 May 20234 May 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.
Now try Lifeskills
Ex4 Ch6 (page 56)
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m Measuring Lengths Measuring Lengths
Drawing LinesDrawing Lines
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4 May 20234 May 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.
Starter QuestionsStarter Questionsww
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sion.
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Q4. Convert 45.1 metres to (a) cm (b) mm
Q3.
Q2. What is the time difference 07:54 and 13:36
Solve 5 37 8 x
Q5. The answer to the question is 90. What is the question.
NUM
4 May 20234 May 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.
Measuring AnglesMeasuring Anglesww
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1.1. Be able to use a protractor Be able to use a protractor to measure various angles.to measure various angles.
1. We are learning how to use a protractor to measure angles.
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A 180o Protractor
Outside scale from 0o to 180o going in a clockwise direction.
Inside scale from 0o to 180o going in an
anti-clockwise direction.
4 May 2023 30
You need to be able to measure an angle to the nearest degree. To help you do this you should always:1. Look directly down onto the cross point.
2. Always use the protractor in a horizontal manner as shown below.
4 May 2023 31
1
2
Measuring Angles with a
180o Protractor
0 on the outside so use outside
scale
0 on the inside so use inside scale
67o
50o
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3
4
Measuring Angles with a
180o Protractor
0 on the outside so use outside
scale
0 on the inside so use inside scale
135o
120o
NUM
4 May 20234 May 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.
Now try Lifeskills
Ex5 Ch6 (page 57)
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m Measuring Measuring
AnglesAnglesHave you updated your Learning Log ?
Are you on Target ?I can ?