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ABC-formula revision and practice 3HAVO
Good morning!
Schedule:
Learning goals
Revising ABC-formula
Dutch elections
Let's practice!
1 / 16
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Slide 1:
Slide
Wiskunde
Middelbare school
havo
Leerjaar 3
This lesson contains
16 slides
, with
interactive quizzes
and
text slides
.
Lesson duration is:
40 min
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Items in this lesson
Good morning!
Schedule:
Learning goals
Revising ABC-formula
Dutch elections
Let's practice!
Slide 1 - Slide
Learning goals
at the end of the lesson I can:
Write down the quadratic formula without looking in my book
Solve any quadratic equation with the quadratic formula
Calculate the discriminant of a quadratic equation
Choose a political party I agree with
Slide 2 - Slide
What is the formula of the discriminant of an quadratic equation?
D =
timer
1:00
Slide 3 - Open question
What is the quadratic formula?
timer
1:00
A
x
=
2
a
b
±
√
D
B
x
=
a
b
±
√
D
C
x
=
2
−
b
±
√
D
D
x
=
2
a
−
b
±
√
D
Slide 4 - Quiz
How do we solve a quadratic equation with the quadratic formula?
1. Write the equation in the form ax
2
+ bx + c = 0
2. Write down: a =...., b = ...., c = .....
3. Calculate the discriminant (D)
4. Fill in the quadratic formula to solve for x
x
=
2
a
−
b
±
√
D
Slide 5 - Slide
Let's practice!
Solve for x:
1. 4x
2
+ 3 = 8x 3. (2x+5)(3-x)= 12
2. x
2
+ x + 2 = 0 4. x(5x-7) = -2
Slide 6 - Slide
4x
2
+ 3 = 8x
Slide 7 - Slide
x
2
+ x + 2 = 0
Slide 8 - Slide
(2x+5)(3-x)= 12
Slide 9 - Slide
x(5x-7) = -2
Slide 10 - Slide
Dutch elections
Today, march 17, dutch citizins will vote in the democratic elections.
What is a democracy?
What are we voting for?
Slide 11 - Slide
Voting
We vote for a party that we think will make the best decisions for our country
Slide 12 - Slide
What party would you choose?
https://www.kieswijzervoorkinderen.nl/
Slide 13 - Slide
What is your number 1 party?
VVD
D66
SGP
CDA
PvdA
Groenlinks
SP
Christenunie
Partij voor de Dieren
Anders..
Slide 14 - Poll
Homework
Study for the test!!
Ask your parents what party they voted for and why
Slide 15 - Slide
Learning goals
at the end of the lesson I can:
Write down the quadratic formula without looking in my book
Solve any quadratic equation with the quadratic formula
Calculate the discriminant of a quadratic equation
Slide 16 - Slide
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