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1819 H2Y §8.4 & 8.5
Which exercises/theories should we discuss on the board?
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Slide 1:
Mind map
Wiskunde
Middelbare school
havo, vwo
Leerjaar 2
This lesson contains
14 slides
, with
interactive quizzes
,
text slides
and
3 videos
.
Lesson duration is:
50 min
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Items in this lesson
Which exercises/theories should we discuss on the board?
Slide 1 - Mind map
Match each shape and formula with the right name
Triangle
Parallelogram
Trapezium
Slide 2 - Drag question
Perimeter
The
perimeter
of a figure
is the sum of all the sides.
Slide 3 - Slide
Circles
The point in the middle of a circle is
called the
centre
.
The distance from the centre to the edge
of the circle is called the
radius
.
The line that divides the circle into two
semicircles is called the
diameter,
this is twice the radius.
Slide 4 - Slide
Circumference of a circle
The perimeter of a circle is called the
circumference
.
The formula to calculate the circumference of a circle is:
(π is pronounced "pi" and π≈3.14)
You can find π on your calculator:
Slide 5 - Slide
Slide 6 - Video
Area of a circle
The formula for the area of a circle is:
Slide 7 - Slide
Slide 8 - Video
Slide 9 - Video
Example
What is the circumference of this circle?
What is the area of this circle?
Slide 10 - Slide
Example
What is the circumference of this circle?
What is the area of this circle?
Slide 11 - Slide
Example
A circle has an circumference of 20.
What is the diameter of the circle?
What is the radius of the circle?
What is the area of the circle?
Slide 12 - Slide
Example
A circle has an circumference of 20.
What is the diameter of the circle?
What is the radius of the circle?
What is the area of the circle?
Slide 13 - Slide
Homework
HW Tuesday:
§8.4: NOT 22, 23. Make all other exercises from your chosen path.
§8.5: NOT 29, 30. Make half the other exercises from your chosen path.
Correct your answers.
HW Monday (Friday is Sport's day):
§8.5: Complete the rest of the exercise from your chosen path.
§8.6: Make 36, 37, 38, 40, 42 (not 39 and 41)
Correct your answers.
Slide 14 - Slide
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