# Practice square roots (t2a)

Roots:
brackets
& formulas

February 10th, 2022
t2a
11:30
At home?
Camera ON

1 / 27
Slide 1: Tekstslide
WiskundeMiddelbare schoolvwoLeerjaar 1

In deze les zitten 27 slides, met interactieve quizzen en tekstslides.

Lesduur is: 60 min

## Onderdelen in deze les

Roots:
brackets
& formulas

February 10th, 2022
t2a
11:30
At home?
Camera ON

#### Slide 1 -Tekstslide

Schedule
• Announcements                                            5 min
• Review: simplifying square roots         10 min
• Square roots in brackets                          10 min
• Practice + check                                           15 min
• Square root formulas                                 10 min
• Tiny practice quiz                                         20 min

#### Slide 2 -Tekstslide

Announcements
• Quiz square roots: 25%       TOMORROW
• Statistics Project: 75%

#### Slide 3 -Tekstslide

Anonymous poll (be honest!):
Did you do all your homework for this lesson?
Yes
No

#### Slide 4 -Poll

Review question 1:
Simplify.

3575
A
45
B
45
C
4
D
Cannot be simplified

#### Slide 5 -Quizvraag

Review question 2:
Simplify.

55+37
A
812
B
835
C
1512
D
Cannot be simplified

#### Slide 6 -Quizvraag

Review question 3:
Simplify.

3246
A
78
B
712
C
128
D
1212

#### Slide 7 -Quizvraag

Review question 4:
Factorize.

50
A
252
B
225
C
52
D
25

#### Slide 8 -Quizvraag

Review question 5:
Factorize and simplify. Write it down!

50+18
A
82
B
342
C
68
D
Cannot be simplified

#### Slide 9 -Quizvraag

Intended Learning Outcomes
At the end of the lesson you can...
• Work out brackets with square roots in them
• Do all sorts of calculations with square roots

Single brackets
Letters
Square roots

Double brackets
Letters
Square roots

Simplify.
2(35+4)
A
65+4
B
65+42
C
310+4
D
310+42

Simplify.
(3+2)(32)
A
1
B
1
C
34
D
32

#### Slide 14 -Quizvraag

Practice

Basic route
48, 49                                            (brackets)
62, 63, 64, 66, 67                      (later: formulas)
49, 50, (51)                                   (brackets)
63, 64, 65, 66, 68                      (later: formulas)

#### Slide 16 -Tekstslide

What is the graph of a quadratic formula called again?
A
Linear graph
B
Hyperbola
C
Parabola
D
Curving graph

#### Slide 17 -Quizvraag

You know two things:
- The shape of the graph of a quadratic formula
- A square root is the 'opposite' of a square
With that in mind, describe what you think the
graph of the formula on the right would look like.
y=x

#### Slide 18 -Open vraag

Let's build the graph
y=x

#### Slide 19 -Tekstslide

www.geogebra.org/graphing

#### Slide 20 -Tekstslide

What will the graph of thís formula look like then?
y=x
A
A normal parabola again
B
A line
C
The same half sideways parabola, but going left instead of right
D
The same half sideways parabola, but going down instead of up

#### Slide 21 -Quizvraag

Explain why the following statement is/isn't true:

is the same as
y=316x
y=48x

#### Slide 22 -Open vraag

True or not true?

is the same as
y=4+9x
y=4+3x
A
True
B
Not true

#### Slide 23 -Quizvraag

True or not true?

is the same as
y=4+3x
y=7x
A
True
B
Not true

#### Slide 24 -Quizvraag

Practice...
...or practice quiz?

Basic route
48, 49                                            (brackets)
62, 63, 64, 66, 67                      (formulas)
49, 50, (51)                                   (brackets)
63, 64, 65, 66, 68                      (formulas)

#### Slide 26 -Tekstslide

Tiny practice quiz
• Copy the exercises in your
notebook and solve them
• Discuss afterwards
• Done early? Continue with:
a.(52)2(5)2
b.43+6753
c.2273+96
d.275+427
e.(7+8)2