3
2
-2
-4
Discovery activity
Negative numbers
Objectives:
: By the end of the lesson the
students will be able to:
• Differentiate between Negative
numbers and Positive numbers.
• Compare between negative
numbers.
Counting Backwards
Fatima counts backwards from 10:
-4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10
Continue counting.
https://www.youtube.com/watch?v=OAoLC
Xpao6s
https://www.youtube.com/watch?v=6U1kC
OuNpR4
Number Line
Place the card you have on the number line
10
9
8
7
6
5
4
3
2
1
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
Check your answer with a partner.
4
C
-2
B
2
A
Which number is a negative number?
Next
Oops! Try Again
Oops! Keep Trying
-24
C
-16
B
-8
A
Which number is the closest to 0 on a number line?
Next
Oops! Try Again
Oops! Keep Trying
-2
C
-6
B
-4
A
Which number is the lowest?
Next
Oops! Try Again
Oops! Keep Trying
-9
C
-5
B
-2
A
Which number is the highest?
Next
Oops! Try Again
Oops! Keep Trying
Closure
https://kahoot.it/challenge/01452383?challenge-
id=03e0396f-6abc-4807-9fe9-
0c3f26c19c90_1690673460017
Independent practice
Classwork : sheet 1
Homework : Google form
-3, 7, 10
C
10, -2, 6
B
8, 5, 7
A
Next
Oops! Try Again
Oops! Keep Trying
Which numbers are in order from the lowest to highest?
-9
C
-3
B
-8
A
Which number is highest?
Next
Oops! Try Again
Oops! Keep Trying
6
C
5
B
4
A
What is the difference between -2 and -6?
Next
Oops! Try Again
Oops! Keep Trying
-2
C
-3
B
-4
A
If you add 7 to -10, what would the answer be?
Next
Oops! Try Again
Oops! Keep Trying
-5
C
-4
B
-3
A
Next
Oops! Try Again
Oops! Keep Trying
If you add 2 to -7 what would the answer be?
-6
C
-13
B
-23
A
Which number is the lowest?
Next
Oops! Try Again
Oops! Keep Trying
-9
C
-7
B
-2
A
Which number is higher than -6?
Next
Oops! Try Again
Oops! Keep Trying
Questions on a Number Line
Alfie draws a number line and writes some questions:
Write some questions for a partner.
1. What number is 7 less than 4?
2. What number is 5 more than -2?
3. What is the difference between -4 and 1?
5
4
3
2
1
0
-1
-2
-3
-4
-5
-3, 3, 5
Number Square
Alfie takes a number square and adds a row at the top. Can you help him to
fill in the numbers?
1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
-9 -8 -7 -6 -5 -4 -3 -2 -1 0
Counting Backwards in 2s
Alfie and Fatima work together to count backwards. One person gives a
starting number less than 20, and the other counts backwards. They work
together to check any mistakes.
“8, 6, 4, 2, 0, -1, -3…”
“You’ve changed from
even to odd numbers. I
think we need to check.”
Do you agree with Fatima?
Work with a partner, like Alfie and Fatima to practise counting
backwards in 2s from any number.
Counting Backwards in 5s
Fatima writes the first 3 numbers in a sequence:
25, 20, 15,…
What is the 8th number in the sequence?
-10
Work with a partner. Give a number ending in 0
or 5 to start counting back in 5s.
By counting backwards in 5s,
explore what certain numbers in the
sequence will be, e.g. the 5th number
in a sequence.

Negative numbers.ppt