# Negative Numbers

You have on your table:
- Your laptop (go to lessonup.app)
- Your grid notebook
- A pen to write with

timer
2:00
Welcome
1 / 20
Slide 1: Tekstslide
WiskundeMiddelbare schoolmavo, havo, vwoLeerjaar 1

In deze les zitten 20 slides, met interactieve quizzen en tekstslides.

Lesduur is: 45 min

## Onderdelen in deze les

You have on your table:
- Your laptop (go to lessonup.app)
- Your grid notebook
- A pen to write with

timer
2:00
Welcome

#### Slide 1 -Tekstslide

Today
- What did we talk about last lesson?
- Practice with what we learned in last lesson
- What are today's learning intentions?
- multiply positive and negative integers

- divide positive and negative integers
- Let's do some exercises
-  No homework

#### Slide 2 -Tekstslide

What did we talk about last lesson?
How to
- add a negative integer
- subtract a negative integer
(without using a number line)

#### Slide 3 -Tekstslide

timer
1:00
Where do we see negative integers in our daily lives?

#### Slide 4 -Woordweb

Adding a negative integer
3+(4)=
timer
1:00
A
-1
B
1
C
-7
D
7

#### Slide 5 -Quizvraag

Subtracting a negative integer
3(4)=
timer
1:00
A
-1
B
1
C
-7
D
7

#### Slide 6 -Quizvraag

Adding a negative integer
3+(4)=
timer
1:00
A
-1
B
1
C
-7
D
7

#### Slide 7 -Quizvraag

Learning intentions
After this lesson you should be able to:
- multiply positive and negative integers
- divide positive and negative integers

#### Slide 8 -Tekstslide

Rules for multiplication

• When multiplying two integers with the same signs, the answer is always positive.

• When multiplying two integers with different signs, the answer is always negative.

#### Slide 9 -Tekstslide

Multiplying integers
-5 x -4 =
timer
0:30
A
20
B
-20

#### Slide 10 -Quizvraag

Multiplying integers
7 x -4 =

timer
0:30
A
-28
B
28

#### Slide 11 -Quizvraag

Multiplying integers
-5 x 0 =

timer
0:30
A
-5
B
0

#### Slide 12 -Quizvraag

Rules for division

• When dividing two integers with the same sign, the answer is always positive.

• When dividing two integers with different signs, the answer is always negative.

#### Slide 13 -Tekstslide

a negative integer divided by a positive integer equals
timer
0:30
A
a positive integer
B
a negative integer

#### Slide 14 -Quizvraag

Dividing integers
-28 : -4 =
timer
0:30
A
-7
B
7

#### Slide 15 -Quizvraag

Dividing integers
-7 : 1 =
timer
0:30
A
-7
B
7
C
-1
D
1

#### Slide 16 -Quizvraag

Lesson evaluation
Are you now able to multiply and divide integers?
timer
0:30
😒🙁😐🙂😃

#### Slide 17 -Poll

Let's do some exercises
What? On page 95 do exercises 1 and 4
How? In pairs (whisper)
Time? 7 minutes
Help? Use your notes or raise your hand.
Finished? Do exercise 2 and 5
timer
7:00

#### Slide 18 -Tekstslide

Lesson wrap up
What did we learn today?

- We learned how to multiply and divide integers