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Negative Numbers
Grab your stuff
You have on your table:
- Your laptop (go to lessonup.app)
- Your grid notebook
- A pen to write with
- Your reader
timer
2:00
Welcome
1 / 20
volgende
Slide 1:
Tekstslide
Wiskunde
Middelbare school
mavo, havo, vwo
Leerjaar 1
In deze les zitten
20 slides
, met
interactieve quizzen
en
tekstslides
.
Lesduur is:
45 min
Start les
Bewaar
Deel
Printen
Onderdelen in deze les
Grab your stuff
You have on your table:
- Your laptop (go to lessonup.app)
- Your grid notebook
- A pen to write with
- Your reader
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
positiv
e.
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
Slide 19 - Tekstslide
Slide 20 - Tekstslide
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