# 1718 WB1Y CH3 Lesson 5

Which exercises should I discuss on the board?
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Slide 1: Woordweb
WiskundeMiddelbare schoolvwoLeerjaar 1

In deze les zitten 21 slides, met interactieve quizzen en tekstslides.

Lesduur is: 50 min

## Onderdelen in deze les

Which exercises should I discuss on the board?

Goals Chapter 3

#### Slide 2 -Tekstslide

You can read off information from a graph
What whas the speed after 4 seconds?

#### Slide 3 -Tekstslide

You can read off information from a graph
What whas the speed after 4 seconds?

The point on the graph with horizontal
coordinate 4 has vertical coordinate 18.

18 m/s

#### Slide 4 -Tekstslide

You can use coordinate notation
Plot point A with coordinates (3, 5.5) in a coordinate system.

#### Slide 5 -Tekstslide

You can use coordinate notation
Plot point A with coordinates (3, 5.5) in a coordinate system.

#### Slide 6 -Tekstslide

You can find points of intersection
What are the coordinates of the
points of intersection of the line
through points A and B with:
- the horizontal axis?
- the vertical axis?
- the line through points C and D?

#### Slide 7 -Tekstslide

You can find points of intersection
What are the coordinates of the
points of intersection of the line
through points A and B with:
- the horizontal axis?
- the vertical axis?
- the line through points C and D?

#### Slide 8 -Tekstslide

You can find points of intersection
What are the coordinates of the
points of intersection of the line
through points A and B with:
- the horizontal axis?                            (10.5, 0)
- the vertical axis?                                  (0, 7)
- the line through points C and D?  (9, 1)

#### Slide 9 -Tekstslide

You know what grid points are and what the origin is
Which points are grid points?
Which point is the origin?

#### Slide 10 -Tekstslide

You know what grid points are and what the origin is
Which points are grid points?
Which point is the origin?

B, C and D are grid points
D is the origin

#### Slide 11 -Tekstslide

You can work out which points lie on a line outside the coordinate system
If you extend the line through
A and B to the right, it will
pass through a point with
first coordinate 30. What is
the second coordinate?

#### Slide 12 -Tekstslide

You can work out which points lie on a line outside the coordinate system
If you extend the line through A and B to the right, it
will pass through a point with first coordinate 30.
What is the second coordinate?

2 steps to the right on the horizontal axis is 3
steps up on the vertical axis. So 1 step to the right
on the horizontal axis is 1.5 steps up on the vertical
axis. From point (1, 1) you have to go 29 steps to the
right, so you have to go 29 x 1.5 = 43.5 steps up, so
you will be at point (30, 44.5).
The second coordinate is 44.5

#### Slide 13 -Tekstslide

You can identify what the variables and units are used in a coordinate system
What variable is given on the horizontal axis?
What variable is given on the vertical axis?
What unit is used on the horizontal axis?
What unit is used on the vertical axis?

#### Slide 14 -Tekstslide

You can identify what the variables and units are used in a coordinate system
What variable is given on the horizontal axis?
Time
What variable is given on the vertical axis?
Distance
What unit is used on the horizontal axis?
s (Seconds)
What unit is used on the vertical axis?
m (Metres)

#### Slide 15 -Tekstslide

You can identify when a graph is rising, when it is constant and when it is falling
When does the graph rise, when does it stay constant and when does it fall?

#### Slide 16 -Tekstslide

You can identify when a graph is rising, when it is constant and when it is falling
When does the graph rise, when does it stay constant and when does it fall?

From 0 to 6 seconds the graph rises
From 6 to 11 seconds the graph is constant
From 11 to 18 seconds the graph falls

#### Slide 17 -Tekstslide

You can plot a graph from a table
- Bottom row of a table = vertical axis
- Top row of a table = horizontal axis
- Use a zigzag if needed
- Pick an appropriate scale
- Use a pencil and (sometimes) a geotriangle!

#### Slide 18 -Tekstslide

You know these words
graph                                 coordinates        grid point         variable       compare
increase                           corresponds       lowest               unit                table
decrease                          extend                   highest             relation
coordinate system      lie on                       plotting            rising
horizontal                        midpoint               vertex                falling
vertical                              value                       intersection    constant
axis/axes                          origin                     zigzag                 scale

#### Slide 19 -Tekstslide

Is there anything I should explain again?

#### Slide 20 -Woordweb

Homework Tuesday
Make and correct from §3.6:
33, 34, 35, 36, 37, 38