Lesson 4

Lesson 4
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Slide 1: Tekstslide
MathematicsLower Secondary (Key Stage 3)

In deze les zitten 44 slides, met interactieve quizzen en tekstslides.

time-iconLesduur is: 50 min

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Lesson 4

Slide 1 - Tekstslide

Starter
Calculate the following expressions
 
          
(3 x 8) ÷ 10 
(8 x 3) ÷ 5
(6 x 15) ÷ 30
180 ÷ (6 x 15)
(4 x 6) ÷ 3
(9 x 10) ÷ (6 x 5)
(3 x 20)÷(2 x 15)
(14 x 3) ÷ 6

Slide 2 - Tekstslide

Starter
Calculate the following expressions
 
          
   (3 x 8) ÷ 10   
(8 x 3) ÷ 5
 (6 x 15) ÷ 30
180 ÷ (6 x 15)
2.4
4.8
3
2
(4 x 6) ÷ 3
(9 x 10) ÷ (6 x 5)
(3 x 20)÷(2 x 15)
(14 x 3) ÷ 6

Slide 3 - Tekstslide

Starter
Calculate the following expressions
 
          
(3 x 8) ÷ 10 
(8 x 3) ÷ 5
(6 x 15) ÷ 30
180 ÷ (64 x 15)
2.4
4.8
3
2
(4 x 6) ÷ 3
8
(9 x 10) ÷ (6 x 5)
(3 x 20)÷(2 x 15)
2
(14 x 3) ÷ 6
7
3

Slide 4 - Tekstslide

How would you describe a rectangle?

Slide 5 - Open vraag

Slide 6 - Tekstslide

Select the correct property from the options below for a rectangle.
A
All the sides are equal in length
B
All the sides are parallel
C
Opposite sides are equal in length
D
The perimeter is the sum of the two different lengths

Slide 7 - Quizvraag

Select the incorrect property from the options below for a rectangle.
A
All the internal angles are ninety degrees
B
Opposite sides are parallel
C
Opposite sides are equal in length
D
The sum of the internal angles is one hundred and eighty degrees

Slide 8 - Quizvraag

If a rectangle has an area of 12 square units, select the correct list of possible length and height

Slide 9 - Open vraag

Find all of the factors of 20
A
1, 2, 4, 5, 20
B
2, 4, 5, 10
C
1, 2, 4, 5, 10, 20
D
1, 2, 10, 20

Slide 10 - Quizvraag

Identify the correct calculation to give a product of 20
A
4 x 10
B
20 ÷ 5
C
5 x 4
D
5 ÷ 4

Slide 11 - Quizvraag

Slide 12 - Tekstslide

Slide 13 - Tekstslide

Slide 14 - Tekstslide

Current perimeter = ?

Slide 15 - Tekstslide

Current perimeter = 8 + 6 + 8 + 6 = 28m

Slide 16 - Tekstslide

Current perimeter = 8 + 6 + 8 + 6 = 28m
Double means ...?

Slide 17 - Tekstslide

Current perimeter = 8 + 6 + 8 + 6 = 28m
Double means x by 2

Slide 18 - Tekstslide

Current perimeter = 8 + 6 + 8 + 6 = 28m
Double means x by 2

New perimeter = 16 + 12 + 16 + 12 = 56m

Slide 19 - Tekstslide

Current perimeter = 8 + 6 + 8 + 6 = 28m
Double means x by 2

New perimeter = 16 + 12 + 16 + 12 = 56m

56 is double 28 and so the new dimensions  are?

Slide 20 - Tekstslide

Current perimeter = 8 + 6 + 8 + 6 = 28m
Double means x by 2

New perimeter = 16 + 12 + 16 + 12 = 56m

56 is double 28 and so the new dimensions  are length 16 and height 12

Slide 21 - Tekstslide

Current area = 8 x 6 = 48 square metres
Double means x by 2

New area = 8 x 2 x 6
                   = (8 x 2) x 6 OR 8 x (2 x 6)
 
The new dimensions are either l = 16 and h = 6 OR
l = 8 and h = 12

Slide 22 - Tekstslide

Current area = 8 x 6 = ?


Slide 23 - Tekstslide

Current area = 8 x 6 = 48 square metres


Slide 24 - Tekstslide

Current area = 8 x 6 = 48 square metres
Double means x by 2

New area = 8 x 2 x 6
                   

Slide 25 - Tekstslide

Current area = 8 x 6 = 48 square metres
Double means x by 2

New area = 8 x 2 x 6
                   = (8 x 2) x 6 OR 8 x (2 x 6)
 


Slide 26 - Tekstslide

Current area = 8 x 6 = 48 square metres
Double means x by 2

New area = 8 x 2 x 6
                   = (8 x 2) x 6 OR 8 x (2 x 6)
 
The new dimensions are either l = 16 and h = 6 OR
l = 8 and h = 12

Slide 27 - Tekstslide

Slide 28 - Tekstslide

Slide 29 - Tekstslide

Slide 30 - Tekstslide

Slide 31 - Tekstslide


A
rectangle X has the greater area
B
rectangle Y has the greater area
C
rectangle X has the greater perimeter
D
rectangle Y has the greater perimeter

Slide 32 - Quizvraag

Slide 33 - Tekstslide


A
rectangle P has the greater area
B
rectangle Q has the greater area
C
rectangle P has the greater perimeter
D
rectangle Q has the greater perimeter

Slide 34 - Quizvraag

Slide 35 - Tekstslide


A
rectangle R has the greater area
B
rectangle S has the greater area
C
rectangle R has the greater perimeter
D
rectangle S has the greater perimeter

Slide 36 - Quizvraag

Slide 37 - Tekstslide

Slide 38 - Tekstslide

Slide 39 - Tekstslide

Slide 40 - Tekstslide

Slide 41 - Tekstslide

Slide 42 - Tekstslide

Slide 43 - Tekstslide

Slide 44 - Tekstslide