# Letters (t1b)

Letters

March 10th, 2023
t1
1 / 30
Slide 1: Tekstslide
WiskundeMiddelbare schoolvwoLeerjaar 1

In deze les zitten 30 slides, met interactieve quizzen en tekstslides.

Lesduur is: 60 min

## Onderdelen in deze les

Letters

March 10th, 2023
t1

#### Slide 1 -Tekstslide

Schedule
• Review: parabolas                                       15 min
+ linear graphs?
• Letters                                                              15 min
• Some practice                                              20 min
• Test ch.5                                                         20 min

#### Slide 2 -Tekstslide

Anonymous poll:
What do you think?
I have no questions about the homework, it was fine!
I have some questions, there were some confusing exercises
Homework? I didn't do it...

#### Slide 3 -Poll

What happens when I fill in
x = 4 or x = -4
A
B
C
It depends on the formula
D
It's impossible to tell

#### Slide 4 -Quizvraag

Step 1

Step 2

Step 3

Step 4
How to draw a graph
Plot the points
Draw a curve
Make a table
Draw a coordinate system

#### Slide 5 -Sleepvraag

How to draw a graph from a quadratic formula

Given is the formula
Draw the graph.

Step 1: MAKE A TABLE
Step 2: DRAW A COORDINATE SYSTEM
Step 3: PLOT THE POINTS FROM YOUR TABLE
Step 4: DRAW A SMOOTH CURVE
THROUGH THE POINTS
y=21x22

#### Slide 6 -Tekstslide

How to draw a graph from a quadratic formula

Given is the formula
Draw the graph.

Step 1: MAKE A TABLE
Step 2: DRAW A COORDINATE SYSTEM
Step 3: PLOT THE POINTS FROM YOUR TABLE
Step 4: DRAW A SMOOTH CURVE
THROUGH THE POINTS
y=21x22

#### Slide 7 -Tekstslide

How to draw a graph from a quadratic formula

Given is the formula
Draw the graph.

Step 1: MAKE A TABLE
Step 2: DRAW A COORDINATE SYSTEM
Step 3: PLOT THE POINTS FROM YOUR TABLE
Step 4: DRAW A SMOOTH CURVE
THROUGH THE POINTS
y=21x22

BOOK -->
Linear

vs

#### Slide 13 -Tekstslide

Intended Learning Outcomes
At the end of the lesson you can...
• Do simple calculations with letters
Exercises chapter 6.4:
Choose a route
in 46, 48 - 51
Done?
Great! Now try 53 - 65

#### Slide 14 -Tekstslide

Why do you think we use
letters in maths sometimes
timer
2:00

#### Slide 15 -Open vraag

Numbers                                                          Letters
5+5+5+5+5+5+5
p+p+p+p+p+p+p
Exercises chapter 6.4:
Choose a route
in 46, 48 - 51
Done?
Great! Now try 53 - 65

#### Slide 16 -Tekstslide

Simplify.

a + a + a + a - a + a = ...
A
6a
B
4a
C
5a
D
4

#### Slide 17 -Quizvraag

Simplify.

3b - b + 2b - 6b = ...
A
2b
B
-3b
C
-2b
D
b

#### Slide 18 -Quizvraag

Letters: multiplying
Numbers                                                           Letters
45+65
4p+6p
8p2
9p3q
654
Exercises chapter 6.4:
Choose a route
in 46, 48 - 51
Done?
Great! Now try 53 - 65

Simplify:

34c=...
A
7c
B
7
C
12
D
12c

Simplify:

6e5f=...
A
30ef
B
-11ef
C
11e
D
-30f

#### Slide 21 -Quizvraag

Exercises chapter 6.4:
Choose a route
in 46, 48 - 51
Done?
Great! Now try 53 - 65

#### Slide 22 -Tekstslide

What do you think about calculating with letters?
I can probably do this!
Some rules are confusing, but it's OK I guess...
These rules hurt my brain, I need more help or examples!

#### Slide 23 -Poll

Some silent practice (15 min)

Stuck?
- Read the question again carefully
- Copy the method from the example(s)
- Try something! --> then check with solutions
Exercises chapter 6.4:
Choose a route
in 46, 48 - 51
Done?
Great! Now try 53 - 65
3x+5x=8x
5a3b=15ab

#### Slide 24 -Tekstslide

Simplify:

3p6q10pq=...
A
Cannot be simplified
B
-pq
C
10pqt
D
18pt

#### Slide 25 -Quizvraag

Next lesson:   like terms
4p9p
2p+10q

Test ch.5

#### Slide 27 -Tekstslide

Simplify:

12p - 4p = ...
A
Cannot be simplified
B
3
C
8p
D
8

#### Slide 28 -Quizvraag

Simplify:

12p - 4q = ...
A
Cannot be simplified
B
8pq
C
8q
D
8p

#### Slide 29 -Quizvraag

Last one! Simplify:

5p3q11pq=...
A
Cannot be simplified
B
4pq
C
0
D
-3pq