# Practice square roots (t2a)

Roots:
brackets
& formulas

February 3rd, 2023
t2a
13:15
1 / 36
Slide 1: Slide
WiskundeMiddelbare schoolvwoLeerjaar 1

This lesson contains 36 slides, with interactive quizzes and text slides.

Lesson duration is: 60 min

## Items in this lesson

Roots:
brackets
& formulas

February 3rd, 2023
t2a
13:15

#### Slide 1 -Slide

Schedule
• Announcements                                             5 min
Starting up
• Review: Gooseboard                                   20 min
• Square roots in brackets                           10 min
• Practice                                                             15 min
• Square root formulas                                 10 min
• Tiny practice quiz                                        15 min

#### Slide 2 -Slide

Announcements
• Quiz square roots: 25%       MONDAY
• Statistics Project: 75%         (term 4)

#### Slide 3 -Slide

Announcements
• Got It:
60% (Thursday before test week)

#### Slide 4 -Slide

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

1.    Simplify.
3575

2.    Simplify.
55+37

3.    Simplify.
3246

4.    Simplify.
50

5.    Simplify.
18

#### Slide 10 -Slide

6.  Factorize both square roots, then simplify and add them together:
50+18

#### Slide 11 -Slide

Review question 1:
Simplify.

3575
A
45
B
45
C
4
D
Cannot be simplified

#### Slide 12 -Quiz

Review question 2:
Simplify.

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

#### Slide 13 -Quiz

Review question 3:
Simplify.

3246
A
78
B
712
C
128
D
1212

#### Slide 14 -Quiz

Review question 4:
Factorize.

50
A
252
B
225
C
52
D
25

#### Slide 15 -Quiz

Review question 4:
Factorize.

18
A
92
B
29
C
23
D
32

#### Slide 16 -Quiz

Review question 5:
Factorize, then simplify. Write it down!

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

#### Slide 17 -Quiz

Intended Learning Outcomes
At the end of the lesson you can...
• Work out brackets with square roots in them
• Draw the graph of a square root formula:
• Do calculations with square root formulas
y=x

#### Slide 18 -Slide

Intended Learning Outcomes
At the end of the lesson you can...
• Work out brackets with square roots in them
• Draw the graph of a square root formula:
• Do calculations with square root formulas
y=x
Take notes!

#### Slide 19 -Slide

Single brackets             Double brackets
Letters
Square roots
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 22 -Quiz

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 24 -Slide

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

#### Slide 25 -Quiz

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 26 -Open question

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, think about what the
graph of the formula above would look like.
y=x

#### Slide 27 -Slide

Let's build the graph
y=x

#### Slide 28 -Slide

www.geogebra.org/graphing

#### Slide 29 -Slide

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 30 -Quiz

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

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

True or false?

is the same as
y=4+9x
y=4+3x
A
True
B
False

True or false?

is the same as
y=4+3x
y=7x
A
True
B
False

#### Slide 33 -Quiz

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 35 -Slide

Tiny practice quiz
• Copy the exercises in your
notebook and solve them
• Discuss afterwards
• Done early? Continue with:
(52)22(5)2
43+6753
2273+96
275+427
(7+8)2
a)
b)
c)
d)
e)