1819 H2Y §8.4 & 8.5

Which exercises/theories should we discuss on the board?
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Slide 1: Woordweb
WiskundeMiddelbare schoolhavo, vwoLeerjaar 2

In deze les zitten 14 slides, met interactieve quizzen, tekstslides en 3 videos.

Lesduur is: 50 min

Onderdelen in deze les

Which exercises/theories should we discuss on the board?

Slide 1 -Woordweb

Match each shape and formula with the right name
Triangle
Parallelogram
Trapezium

Slide 2 -Sleepvraag

Perimeter
The perimeter of a figure
is the sum of all the sides.

Slide 3 -Tekstslide

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 -Tekstslide

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 6 -Video

Area of a circle
The formula for the area of a circle is:

Slide 9 -Video

Example
What is the circumference of this circle?

What is the area of this circle?

Slide 10 -Tekstslide

Example
What is the circumference of this circle?

What is the area of this circle?

Slide 11 -Tekstslide

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 -Tekstslide

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 -Tekstslide

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.