Quadratic formulas (t1b)

Quadratic formulas





February 24th
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Slide 1: Diapositive
WiskundeMiddelbare schoolvwoLeerjaar 1

Cette leçon contient 27 diapositives, avec quiz interactifs et diapositives de texte.

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Quadratic formulas





February 24th
t1
- Go to lessonup.app
- Log in with the code below
- Put your screen down
- Start reading

Slide 1 - Diapositive

Schedule
  • Reading                                                             5 min
  • Announcements                                           5 min
  • Review: square (roots)                              10 min
  • Quadratic formulas                                    15 min
  • Silent practice                                              15 min
  • Extra example                                                5 min
  • Practice +wrap-up                            10 + 10 min

Slide 2 - Diapositive

Announcements
Got It
Don't forget: 
                70% 
           in 2F 
before Thursday before test week

Slide 3 - Diapositive

Announcements
Test ch.5
- Still checking!
- How did it go?
- Still people who have to catch up

Slide 4 - Diapositive

Last lesson's
Intended learning outcomes


At the end of the lesson you could...
  • Calculate squares of numbers
  • Calculate square roots of numbers
  • Use BODMAS in calculations with squares & roots

Slide 5 - Diapositive


a)52+32=
A
8
B
16
C
34
D
64

Slide 6 - Quiz


b)(6)242=
A
-56
B
-20
C
2
D
20

Slide 7 - Quiz


c)1215327+32=
A
-49
B
5
C
27
D
85

Slide 8 - Quiz

a)52+32=
b)(6)242=
c)1215327+32=

Slide 9 - Diapositive

Fill in three words (or sentences) related to formulas

Slide 10 - Carte mentale

This lesson's
Intended learning outcomes


At the end of the lesson you can...
  • Explain the difference between a linear and a quadratic formula
  • Calculate values in quadratic formula
  • Find quadratic formulas in stories

Slide 11 - Diapositive

Quadratic formulas
'Linear' formulas                                                    
Cost = 4 ⋅ number of kilometres + 3


Slide 12 - Diapositive

Quadratic formulas
'Linear' formulas                                           



C=4k+3

Slide 13 - Diapositive

Quadratic formulas
'Linear' formulas                                           



y=4x+3

Slide 14 - Diapositive

Quadratic formulas
'Linear' formulas                                                       'Quadratic' formulas
----------------

y=4x+3
y=21x2
2

Slide 15 - Diapositive

Quadratic formulas
'Linear' formulas                                                       'Quadratic' formulas
----------------

y=4x+3
y=21x2
2

Slide 16 - Diapositive

OK, quadratic formulas and parabolas...
...but no one uses this in real life!
Agree
Disagree

Slide 17 - Sondage

Slide 18 - Diapositive

'Linear' formulas
'Quadratic' formulas
Drag every formula to the correct side.
y = x- 3
N = 2k + 6
B = 5 - 3t
K = 7x + 62
A = 9 - 2h2

Slide 19 - Question de remorquage

Filling in a quadratic formula
Given is the formula
What is y for x = 2?


What is y for x = -3?
y=21x22

Slide 20 - Diapositive

Given is the formula

What is y for x = 3 ?
y=2x21
A
5
B
7
C
19
D
17

Slide 21 - Quiz

Given is the formula

What is y for x = -4 ?
y=2x21
A
-31
B
-33
C
31
D
33

Slide 22 - Quiz

__________
y=2x21
x=3
x=4

Slide 23 - Diapositive

Silent practice (10 min)
No questions for 10 minutes! :(
Read carefully    -    study  green theory box    -    look in solutions
TRY SOMETHING!

Pick a route in
 21-29

Slide 24 - Diapositive

Given is the formula

What is y for x = 4?
y=x26
A
2
B
10
C
96
D
-96

Slide 25 - Quiz

Given is the formula

What is y for x = 4?
y=2x2+1
A
-31
B
-15
C
17
D
33

Slide 26 - Quiz

Given is the formula

What is y for x = 4?
y=31x232
A
832
B
7
C
6
D
531

Slide 27 - Quiz