# Yr 9 Unit4 Week 1 - Lesson 4

Yr 9 Unit4 - Lesson 4
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Slide 1: Tekstslide
MathematicsLower Secondary (Key Stage 3)

In deze les zitten 43 slides, met interactieve quizzen en tekstslides.

Lesduur is: 50 min

## Onderdelen in deze les

Yr 9 Unit4 - Lesson 4

#### Slide 1 -Tekstslide

Explain what we mean by collecting like terms i.e. a + a + b + b +b

#### Slide 2 -Woordweb

Simplify a + a + b + b + b
A
2a + 3b
B
3b + 2a
C
2a + b
D
a + 3b

#### Slide 3 -Quizvraag

Simplify 2a + a + b + b -3 b
A
3a + 5b
B
2a - 3b
C
3a - b
D
2a - 3b

#### Slide 4 -Quizvraag

Simplify -2a + a + b + -b -3 b
A
3a + 5b
B
a + 5b
C
a - 4b
D
-a - 3b

#### Slide 5 -Quizvraag

Describe what is meant by substitution in a mathematical expression

#### Slide 6 -Woordweb

If a = 3 and b = 7 calculate 2a + b
A
10
B
6
C
13
D
7

#### Slide 7 -Quizvraag

If a = 3 and b = 7 calculate 2a + 3b
A
23
B
6
C
21
D
27

#### Slide 8 -Quizvraag

If a = 3 and b = 7 calculate 2a - 3b
A
-15
B
15
C
-5
D
5

#### Slide 9 -Quizvraag

If a = -3 and b = -7 calculate 2a + 3b
A
-27
B
27
C
-15
D
15

#### Slide 10 -Quizvraag

DO NOW
TITLE - Unit 4 Week 1 - Lesson 4 - DO NOW

INSTRUCTIONS - Copy the top two questions into your exercise book and then answer them.

QUESTIONS - Top two

timer
5:00

#### Slide 13 -Tekstslide

Describe what you can see in the diagram above

#### Slide 14 -Woordweb

Describe the name of the blue shape below
A
Heptagon
B
Hexagon
C
Henagon
D
Hebagon

#### Slide 15 -Quizvraag

Write down the equation for the following diagram
A
h + s
B
h + s = 25
C
4h = 25
D
4h + s = 25

#### Slide 16 -Quizvraag

Select the correct sentences which describe the image above.
A
There are 2 equations.
B
There is a total of 5 heptagons.
C
There are 8 squares.
D
The total of the 2 equations is 11.

#### Slide 17 -Quizvraag

Select the correct sentences which describe the image above.
A
2h + 3s = 6
B
3s + 2h = 6
C
6 = 3s + 2h
D
2h + 3s = 5

#### Slide 18 -Quizvraag

Select the correct answer for the sum of the 2 equations.
A
5h + 3s = 11
B
3s + 8h = 11
C
5h + 8s = 5
D
5h + 8h = 11

Whiteboard
7h + 6s =

Whiteboard
7h + 6s =

Whiteboard
7h + 6s =

Whiteboard
7h + 6s = 25 + 6

Whiteboard
7h + 6s = 25 + 6
= 31

Whiteboard
8h + 7s

Whiteboard
3h + 7s

Whiteboard
2h + s

#### Slide 28 -Tekstslide

NEW LEARNING
TITLE - Unit 4 Week 1 - Lesson 4 - NEW LEARNING

INSTRUCTIONS - Copy the selected notes into your exercise book.

timer
3:00

#### Slide 30 -Tekstslide

If 4x + y = 19 and x + 2y = 10, what is the value of 5x + 3y?
A
15
B
22
C
29
D
Cannot tell

#### Slide 31 -Quizvraag

If 4x + y = 19 and x + 2y = 10, what is the value of 3x - y?
A
9
B
26
C
16
D
Cannot tell

#### Slide 32 -Quizvraag

If a + 5b = 20 and 3a - 8b = -5, what is the value of 4a - 3b?
A
-25
B
-15
C
15
D
25

#### Slide 34 -Tekstslide

INDEPENDENT STUDY
TITLE - Unit 4 Week 1 - Lesson 4 - INDEPENDENT STUDY

INSTRUCTIONS - Copy the selected questions into your exercise book and then answer them.

QUESTIONS - 1 and 2