ABC-formula revision and practice 3HAVO

Good morning!

Schedule:

Learning goals
Revising ABC-formula
Dutch elections
Let's practice!

1 / 16

Slide 1: Slide

WiskundeMiddelbare schoolhavoLeerjaar 3

This lesson contains 16 slides, with interactive quizzes and text slides.

Lesson duration is: 40 min

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

x = \frac{​ b \pm \sqrt ​ D ​ ​ ​ ​ ​}{​ 2 a ​}

x = \frac{​ b \pm \sqrt ​ D ​ ​ ​ ​ ​}{​ a ​}

x = \frac{​ - b \pm \sqrt ​ D ​ ​ ​ ​ ​}{​ 2 ​}

x = \frac{​ - b \pm \sqrt ​ D ​ ​ ​ ​ ​}{​ 2 a ​}

Slide 4 - Quiz

How do we solve a quadratic equation with the quadratic formula?

1. Write the equation in the form ax2 + 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 = \frac{​ - b \pm \sqrt ​ D ​ ​ ​ ​ ​}{​ 2 a ​}

Slide 5 - Slide

Let's practice!

Solve for x:

1. 4x2 + 3 = 8x 3. (2x+5)(3-x)= 12

2. x² + x + 2 = 0 4. x(5x-7) = -2

Slide 6 - Slide

4x² + 3 = 8x

Slide 7 - Slide

x² + 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

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

ABC-formula revision and practice 3HAVO

Items in this lesson

Slide 1 - Slide

Slide 2 - Slide

Slide 3 - Open question

Slide 4 - Quiz

Slide 5 - Slide

Slide 6 - Slide

Slide 7 - Slide

Slide 8 - Slide

Slide 9 - Slide

Slide 10 - Slide

Slide 11 - Slide

Slide 12 - Slide

Slide 13 - Slide

Slide 14 - Poll

Slide 15 - Slide

Slide 16 - Slide

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