Lesson 1: Linear Equation – KS3 – 4
(Y10-11)
Objective:
• Solve linear equation with x on 1 side
• Solve linear equation with x on 2 sides
Materials:
• Print Balance Template
• Print Independent Practice
• Print HW
Vocabulary:
Lesson outline:
Duration
Activity
Notes
5 min
Class Rule
1. Be prepared and 2. SLANT
15 min
Warm up game: Ring the golden bell
Altogether
10 min
Basic Concepts
I DO
20 min
Solve Linear Equation (x on 1 side)
WE DO: Altogether → practice in pairs
20 min
Solve Linear Equation (x on 2 sides)
WE DO: Altogether → practice in pairs
15 min
5 min
Independent Practice
Summary
YOU DO: Individually
Altogether
Linear Equation
2
Agenda
•
•
•
•
•
•
Warm-up game: Ring the Golden Bell
Basic concepts: zero pairs, linear equation, solve linear equation
Solve linear equation (x on 1 side): Manipulative + Symbol + Practice
Solve linear equation (x on 2 sides): Manipulative + Symbol + Practice
Kahoot 
Consolidation
3
Warm-up game: Ring the Golden Bell
-
Play independently
-
40 seconds to answer
1 question
-
Raise your board when
time is up:
-
Correct: 1 point
Winner:
highest point
4
Question 1:
Write 2 examples of a linear expression?
5
Question 2:
Expand this expression:
6
Question 3:
Expand this expression:
7
Question 4:
Expand this expression:
8
Question 15:
Expand and simplify this expression:
9
Agenda
•
•
•
•
•
•
Warm-up game: Ring the Golden Bell
Basic concepts: zero pairs, linear equation, solve linear equation
Solve linear equation (x on 1 side): Manipulative + Symbol + Practice
Solve linear equation (x on 2 sides): Manipulative + Symbol + Practice
Kahoot 
Consolidation
10
Basic concepts:
Zero pairs:
What are zero pairs?
Find the other part of these zero pairs:
1. -7
2. 12
3. 3x
4. -4x
5. 8y
11
Basic concepts:
This is an example of a linear equation:
1. What are the components of a linear equation?
- An equal sign
- At least a letter with its exponent = 1
2. Check if these equations are linear or not?
12
Basic concepts:
What do they mean by solving equation?
FIND the value of the unknown to satisfy the equation:
If x = 1 => 2x + 3 is different from -7
If x = -5 => 2x + 3 is equal to -7 => -5 is solution of the equation
13
Agenda
•
•
•
•
•
•
Warm-up game: Ring the Golden Bell
Basic concepts: zero pairs, linear equation, solve linear equation
Solve linear equation (x on 1 side): Manipulative + Symbol + Practice
Solve linear equation (x on 2 sides): Manipulative + Symbol + Practice
Kahoot 
Consolidation
14
Draw balance to represent a linear equation
How to present this equation?
How to express this using a balance?
How about this?
15
Practice drawing balance
16
Example:
Step 1: Isolate x by making zero pairs
Step 2: Find x
!!! Our final purpose is to
find x or isolate x into one
side.
17
Draw balance and use it to solve for x:
18
Symbolize your balance:
19
Step 1: Isolate x by making zero pairs
Step 2: Find x
Practice (no balance is needed)
20
Agenda
•
•
•
•
•
•
Warm-up game: Ring the Golden Bell
Basic concepts: zero pairs, linear equation, solve linear equation
Solve linear equation (x on 1 side): Manipulative + Symbol + Practice
Solve linear equation (x on 2 sides): Manipulative + Symbol + Practice
Kahoot 
Consolidation
21
Solve a linear equation (x on 2 sides)
Let’s draw together:
How to express this using a balance?
Use the balance to solve for x:
Step 1: Isolate x by making zero pairs
Step 2: Find x
22
Draw balance and use it to solve for x
Step 1: Isolate x by making zero pairs
Step 2: Find x
Symbolize your balance !!!!
23
Practice (no balance is needed)
24
Independent Practice
25
Agenda
•
•
•
•
•
•
Warm-up game: Ring the Golden Bell
Basic concepts: zero pairs, linear equation, solve linear equation
Solve linear equation (x on 1 side): Manipulative + Symbol + Practice
Solve linear equation (x on 2 sides): Manipulative + Symbol + Practice
Kahoot 
Consolidation
26
Kahoot 
27
Agenda
•
•
•
•
•
•
Warm-up game: Ring the Golden Bell
Basic concepts: zero pairs, linear equation, solve linear equation
Solve linear equation (x on 1 side): Manipulative + Symbol + Practice
Solve linear equation (x on 2 sides): Manipulative + Symbol + Practice
Kahoot 
Consolidation
28
Consolidation
1. What are components of a linear equation?
2. Give 2 examples of a zero pair?
3. What are steps to solve a linear equation?
4.
Exit Ticket: Solve this equation
29
Homework
Question 1, 2 on the homework sheet
30