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Lesson 1
Lesson 1 - Perimeter of a Shape
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Slide 1:
Slide
Mathematics
Lower Secondary (Key Stage 3)
This lesson contains
49 slides
, with
interactive quizzes
and
text slides
.
Lesson duration is:
50 min
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Items in this lesson
Lesson 1 - Perimeter of a Shape
Slide 1 - Slide
Slide 2 - Slide
Slide 3 - Slide
Slide 4 - Slide
Slide 5 - Slide
Starter
Calculate the following expressions:
3 + 4 x 5
3 x 4 + 5
3 x (4 + 5)
3 x 4 + 4 x 5
18 ÷ 2 + 6
18 ÷ 6 - 2
18 ÷ (3 + 6)
18 ÷ 3 + 13
Slide 6 - Slide
Starter
Calculate the following expressions:
3 + 4 x 5
3 x 4 + 5
3 x (4 + 5)
3 x 4 + 4 x 5
23
17
27
32
18 ÷ 2 + 6
18 ÷ 6 - 2
18 ÷ (3 + 6)
18 ÷ 3 + 13
Slide 7 - Slide
Starter
Calculate the following expressions:
3 + 4 x 5
3 x 4 + 5
3 x (4 + 5)
3 x 4 + 4 x 5
23
17
27
32
18 ÷ 2 + 6
18 ÷ 6 - 2
18 ÷ (3 + 6)
18 ÷ 3 + 13
15
1
2
19
Slide 8 - Slide
Explain what we mean by the perimeter of a shape.
Slide 9 - Open question
Slide 10 - Slide
Slide 11 - Slide
The points are selected so that the line segment is approximately straight.
Slide 12 - Slide
Slide 13 - Slide
New Learning
With the person next to you, look at this shape and make a list of things that you can see.
Slide 14 - Slide
New Learning
With the person next to you, look at this shape and make a list of things that you can see.
1. We assume that the shape is made up of 4
_ _ _ _ _ _ _ _ _ _ _ _ _ _.
2. Each square has a side length of _ _ _ _ _ _ _ _ _ _.
3. On the end of each square, we assume it is an
_ _ _ _ _ _ _ _ _ _ _ _ triangle.
4. The two equal sides each have a length of _ _ _ _ _ _ _
Slide 15 - Slide
New Learning
With the person next to you, look at this shape and make a list of things that you can see.
1. We assume that the shape is made up of 4
SQUARES
.
2. Each square has a side length of _ _ _ _ _ _ _ _ _ _.
3. On the end of each square, we assume it is an
_ _ _ _ _ _ _ _ _ _ _ _ triangle.
4. The two equal sides each have a length of _ _ _ _ _ _ _
Slide 16 - Slide
New Learning
With the person next to you, look at this shape and make a list of things that you can see.
1. We assume that the shape is made up of 4
SQUARES
.
2. Each square has a side length of
3 m
.
3. On the end of each square, we assume it is an
_ _ _ _ _ _ _ _ _ _ _ _ triangle.
4. The two equal sides each have a length of _ _ _ _ _ _ _
Slide 17 - Slide
New Learning
With the person next to you, look at this shape and make a list of things that you can see.
1. We assume that the shape is made up of 4
SQUARES
.
2. Each square has a side length of
3 m
.
3. On the end of each square, we assume it is an
ISOSCELES
triangle.
4. The two equal sides each have a length of _ _ _ _ _ _ _
Slide 18 - Slide
New Learning
With the person next to you, look at this shape and make a list of things that you can see.
1. We assume that the shape is made up of 4
SQUARES
.
2. Each square has a side length of
3 m
.
3. On the end of each square, we assume it is an
ISOSCELES
triangle.
4. The two equal sides each have a length of
2 m
.
Slide 19 - Slide
New Learning
Each square will have 2 sides as part of the perimeter.
Each triangle will have 2 sides as part of the perimeter.
Slide 20 - Slide
New Learning
Each square will have 2 sides as part of the perimeter.
Each triangle will have 2 sides as part of the perimeter.
Calculate the perimeter of the shape.
The sum of 2 sides of a square = 3 + 3 = 6m
Slide 21 - Slide
New Learning
Each square will have 2 sides as part of the perimeter.
Each triangle will have 2 sides as part of the perimeter.
Calculate the perimeter of the shape.
The sum of 2 sides of a square = 3 + 3 = 6m
The perimeter part of 4 squares = 4 x 6 = 24m
Slide 22 - Slide
New Learning
Each square will have 2 sides as part of the perimeter.
Each triangle will have 2 sides as part of the perimeter.
Calculate the perimeter of the shape.
The sum of 2 sides of a triangle = 2 + 2 = 4m
Slide 23 - Slide
New Learning
Each square will have 2 sides as part of the perimeter.
Each triangle will have 2 sides as part of the perimeter.
Calculate the perimeter of the shape.
The sum of 2 sides of a triangle = 2 + 2 = 4m
The perimeter part of 4 triangles = 4 x 4 = 16m
Slide 24 - Slide
New Learning
Each square will have 2 sides as part of the perimeter.
Each triangle will have 2 sides as part of the perimeter.
Calculate the perimeter of the shape.
The total perimeter = 24 + 16 =
40m
Slide 25 - Slide
Starter
Simplify the following ratios.
15 : 35
24 : 60
15 : 75
16 : 40
5 : 20 : 50
10 : 100 : 1000
3a : 9
24t : 60
Slide 26 - Slide
Starter
Simplify the following ratios.
15 : 35
24 : 60
15 : 75
16 : 40
3 : 7
2 : 5
1 : 5
2 : 5
5 : 20 : 50
10 : 100 : 1000
3a : 9
24t : 60
Slide 27 - Slide
Starter
Simplify the following ratios.
15 : 35
24 : 60
15 : 75
16 : 40
3 : 7
2 : 5
1 : 5
2 : 5
5 : 20 : 50
1 : 4 : 10
10 : 100 : 1000
3a : 9
a : 3
24t : 60
3t : 5
1 : 10 : 100
Slide 28 - Slide
Explain what we mean by the perimeter of a shape.
Slide 29 - Open question
Would you be able to explain what is meant by the perimeter of a shape?
Yes I would be able to explain what the perimeter is of ANY shape
I would be able to explain what is the perimeter of simple shapes such as rectangles
I do not understand what is the perimeter of a shape.
Slide 30 - Poll
Slide 31 - Slide
A
A
B
B
C
C
D
D
Slide 32 - Quiz
Slide 33 - Slide
A
6 units
B
6 squares
C
7 units
D
7 squares
Slide 34 - Quiz
Slide 35 - Slide
A
17 units
B
18 units
C
19 units
D
20 units
Slide 36 - Quiz
Slide 37 - Slide
A
48 cm squared
B
43 cm
C
43 cm squared
D
48 cm
Slide 38 - Quiz
Slide 39 - Slide
A
24 cm
B
11 cm
C
22 cm
D
16 cm
Slide 40 - Quiz
Slide 41 - Slide
Slide 42 - Slide
INDEPENDENT STUDY
TITLE
- Unit 11 Week 1 - Lesson 1 - Perimeters
INSTRUCTIONS
-
Glue the question sheet into your book and then answer the questions.
If there is not enough room to write your answers on the sheet, write them in your book.
Show all of your working out.
Slide 43 - Slide
Slide 44 - Slide
Slide 45 - Slide
Slide 46 - Slide
Slide 47 - Slide
Slide 48 - Slide
Slide 49 - Slide
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