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2TH/vwo Ch6 REFRESH
Ch6 Pythagoras' theorem
REFRESH, p.198/199 = Homework today
Let's have a look at a few Math words.
Answer the following questions!
1 / 20
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Slide 1:
Slide
Wiskunde
Middelbare school
vwo
Leerjaar 2
This lesson contains
20 slides
, with
interactive quizzes
and
text slides
.
Lesson duration is:
45 min
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Items in this lesson
Ch6 Pythagoras' theorem
REFRESH, p.198/199 = Homework today
Let's have a look at a few Math words.
Answer the following questions!
Slide 1 - Slide
What is a cuboid?
A
a cube
B
a rectangle
C
a 3D object with 6 sides and only right angles
D
a quadrilateral
Slide 2 - Quiz
Explain face, edge and vertex in the right order:
A
hoekpunt, vlak, rand
B
aangezicht, rand, hoekpunt
C
zijde, ribbe, hoekpunt
D
zijde, hoekpunt, ribbe
Slide 3 - Quiz
Slide 4 - Slide
What kind of traiangle is this?
ANS
Slide 5 - Slide
What is the name of this triangle:
timer
0:30
A
an isosceles triangle
B
an equilateral triangle
C
a right-angled triangle
D
a terrible triangle
Slide 6 - Quiz
Slide 7 - Slide
Slide 8 - Slide
Homework time!
Do REFRESH p.198/199 now.
Later some more slides come up.
timer
10:00
Slide 9 - Slide
timer
0:30
What is the length of a side of a square with area
121 squared cm ?
Slide 10 - Mind map
Solution:
A square with area 121
is 11 cm, because 11 x 11 = 121
c
m
2
Slide 11 - Slide
What is the length of a side of a square with an area of 15 squared centimetres ?
√
1
5
√
1
5
√
1
5
timer
0:30
A
root 15
B
60
C
15 : 4 = 4.75
D
square root 15
Slide 12 - Quiz
Solution:
If this square has 15 ,
the lengths of the sides are cm.
c
m
2
√
1
5
Slide 13 - Slide
Slide 14 - Slide
Squaring:
= 5 x 5 = 25
= c x c , but now:
= .....
ANS
5
2
c
2
(
√
1
0
)
2
timer
0:30
Slide 15 - Slide
(
√
1
0
)
2
= .......
Slide 16 - Mind map
Solution:
= x = 10
(
√
1
0
)
2
√
1
0
√
1
0
Slide 17 - Slide
Let's go a little further:
= x = 10
Now also in this way goes:
= x =
4 x 4 x x = 16 x 6 = 96
(
√
1
0
)
2
√
1
0
√
1
0
(
4
√
6
)
2
4
√
6
4
√
6
√
6
√
6
Slide 18 - Slide
Do R7 in the same way!
The book also explains fine, as you see here:
Slide 19 - Slide
Homework time again!
Make sure you finish most of it in this lesson!
Slide 20 - Slide
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