Yr 9 Unit4 Week 1 - Lesson 2

Yr 9 Unit4 - Lesson 2

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Slide 1: Tekstslide
MathematicsLower Secondary (Key Stage 3)

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

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Yr 9 Unit4 - Lesson 2

Slide 1 - Tekstslide

Substitution And Solving 
In your exercise book:
  • TITLE - Unit 4 - Week 1 - SUBSTITUTION AND SOLVING
  • INSTRUCTIONS - Write the questions in your book and answer. 
  • QUESTIONS -  1 and 2

Slide 2 - Tekstslide

timer
6:00

Slide 3 - Tekstslide

ANSWERS

Slide 4 - Tekstslide

Select the answers that show that the left hand side of the equation is equal to the right hand side
A
1 + 2 + 3 = 3 + 2 + 1
B
1 + 2 = 2 + 1
C
a + b = b + a
D
a + b + c = b + a

Slide 5 - Quizvraag

Select the correct value for y = 2x + 3 when x = 2
A
4
B
7
C
5
D
None

Slide 6 - Quizvraag

Select the correct value of x that will cause the equation y = 4x - 2 to equal 23
A
3
B
4
C
5
D
6

Slide 7 - Quizvraag

DO NOW  
In your exercise book:
  • TITLE - Unit 4 Week 1 - Lesson  2 DO NOW
  • INSTRUCTIONS - Write questions on the left hand of the  side in your book and answer. 

Slide 8 - Tekstslide

timer
3:00

Slide 9 - Tekstslide

Complete the table by dragging and dropping a tick or a cross onto a cell.
You need to check if the values of x and y when substituted into the equations will cause them to balance.

Slide 10 - Sleepvraag

Slide 11 - Tekstslide

Explain what we mean when we say that an equation is BALANCED

Slide 12 - Woordweb

What Does Balanced Mean?
An equation is balanced if the left hand side is equal to the right hand side. Some examples include:
a.  2x = x + x
b.  3x = 12 when x = 4
c.  x + y = 10 when x = 3 and y = 7

Slide 13 - Tekstslide

Slide 14 - Tekstslide

Talk Task
Given the equation y - 2x = 9 

Slide 15 - Tekstslide

Talk Task
Given the equation y - 2x = 9 
when y = 11 and x = 1 ---> (11) - 2 x (1) = 9

Slide 16 - Tekstslide

Talk Task
Given the equation y - 2x = 9 
when y = 11 and x = 1 ---> (11) - 2 x (1) = 9
when y = 11 and x = 2 --->(13) - 2 x (2) = 9

Slide 17 - Tekstslide

Talk Task
Given the equation y - 2x = 9 
when y = 11 and x = 1 ---> (11) - 2 x (1) = 9
when y = 13 and x = 2 --->(13) - 2 x (2) = 9
when y = 15 and x = 3 --->(13) - 2 x (3) = 9

Slide 18 - Tekstslide

Talk Task
Given the equation y - 2x = 9 
when y = 11 and x = 1 ---> (11) - 2 x (1) = 9
when y = 13 and x = 2 --->(13) - 2 x (2) = 9
when y = 15 and x = 3 --->(13) - 2 x (3) = 9
when y = _ _ and x = _ _ --->(_ _) - 2 x (_ _) = 9
when y = _ _ and x = _ _ --->(_ _) - 2 x (_ _) = 9
when y = _ _ and x = _ _ --->(_ _) - 2 x (_ _) = 9

Slide 19 - Tekstslide

Talk Task
Given the equation y - 2x = 9 
when y = 11 and x = 1 ---> (11) - 2 x (1) = 9
when y = 13 and x = 2 --->(13) - 2 x (2) = 9
when y = 15 and x = 3 --->(13) - 2 x (3) = 9
when y = 17 and x =4  --->(17) - 2 x (4) = 9
when y = _ _ and x = _ _ --->(_ _) - 2 x (_ _) = 9
when y = _ _ and x = _ _ --->(_ _) - 2 x (_ _) = 9

Slide 20 - Tekstslide

Talk Task
Given the equation y - 2x = 9 
when y = 11 and x = 1 ---> (11) - 2 x (1) = 9
when y = 13 and x = 2 --->(13) - 2 x (2) = 9
when y = 15 and x = 3 --->(13) - 2 x (3) = 9
when y = 17 and x =4  --->(17) - 2 x (4) = 9
when y = 19 and x = 5 --->(19) - 2 x (5) = 9
when y = _ _ and x = _ _ --->(_ _) - 2 x (_ _) = 9

Slide 21 - Tekstslide

Talk Task
Given the equation y - 2x = 9 
when y = 11 and x = 1 ---> (11) - 2 x (1) = 9
when y = 13 and x = 2 --->(13) - 2 x (2) = 9
when y = 15 and x = 3 --->(13) - 2 x (3) = 9
when y = 17 and x =4  --->(17) - 2 x (4) = 9
when y = 19 and x = 5 --->(19) - 2 x (5) = 9
when y = 21 and x = 6 --->(21) - 2 x (6) = 9

Slide 22 - Tekstslide

Did you understand how we substituted different values into the talk task exercise and always ended up with the same answer?
Yes I did understand what we did.
I understood some of it but I would like to go over it again.
I did not understand any of it.

Slide 23 - Poll

For the equation x + 2y = 12, select the correct values of x and y so that the equation balances
A
x = 0 and y = 6
B
x = 12 and y = 0
C
x = 2 and y = 5
D
x = 3 and y = 4

Slide 24 - Quizvraag

New Learning
Copy the next slide into your exercise book.

Slide 25 - Tekstslide

Slide 26 - Tekstslide

INDEPENDENT STUDY  
In your exercise book:
  • TITLE - Unit 4 Week 1 - Lesson  2 INDEPENDENT STUDY
  • INSTRUCTIONS - Write down the questions in your book and then answer them. 
  • QUESTIONS - 1 and 3

Slide 27 - Tekstslide

Explain what is the meaning of the word equivalent

Slide 28 - Woordweb

What would the following equation look like if all the parts in it were doubled:
2x + 3y = 5

Slide 29 - Woordweb

What would the following equation look like if all the parts in it were trebled:
2x + 3y = 5

Slide 30 - Woordweb

Which of the following equations IS NOT equivalent to
x + 2y = 10
A
x = 10 - 2y
B
2y = 10 - x
C
x + 2y - 10 = 0
D
x + 10 = 2y

Slide 31 - Quizvraag

Slide 32 - Tekstslide

Slide 33 - Tekstslide

Which of the following equations IS NOT equivalent to
y = 2x + 5
A
2y = 4x + 10
B
2y = 3x + 6
C
3y = 3x + 15
D
10y = 20x + 50

Slide 34 - Quizvraag

Slide 35 - Tekstslide

Which of the following equations IS NOT equivalent to
x = y + 4
A
2x = 2y + 4
B
x - y = 4
C
x = 4 + y
D
3x = 3y + 12

Slide 36 - Quizvraag

Slide 37 - Tekstslide

INDEPENDENT STUDY  
In your exercise book:
  • TITLE - Unit 4 Week 1 - Lesson  2 INDEPENDENT STUDY
  • INSTRUCTIONS - Write down the questions in your book and then answer them. 
  • QUESTIONS - 1 and 3

Slide 38 - Tekstslide

timer
10:00

Slide 39 - Tekstslide

Slide 40 - Tekstslide

Slide 41 - Tekstslide

Slide 42 - Tekstslide

Slide 43 - Tekstslide