This paragraph is not that difficult (I think!).
It also doesn't ask that much time from you.
However, §3.2 Working with coordinates,
wasn't that simple!
A good Refresh on this follows now!

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Slide 1: Slide
WiskundeMiddelbare schoolhavo, vwoLeerjaar 1

This lesson contains 28 slides, with interactive quizzes and text slides.

Lesson duration is: 50 min

## Items in this lesson

This paragraph is not that difficult (I think!).
It also doesn't ask that much time from you.
However, §3.2 Working with coordinates,
wasn't that simple!
A good Refresh on this follows now!

#### Slide 1 -Slide

That is why .....
we first look closely at a pretty difficult exercise

It's very understandable if you did not understand all of it, yet.
So this is your big chance to catch up!

#### Slide 3 -Slide

This exercise we will go through, together.
it's not that simple.
So, pay attention well!

#### Slide 4 -Slide

What the writer of the book forgot to mention is what we call the x-axis and the y-axis!
Here it comes:
(the axes are even made longer!)

#### Slide 5 -Slide

Question:
What do you have

#### Slide 7 -Slide

Try to agree on it!
Answer this in the next slide.
From now on we call this: ANS !
timer
0:45

#### Slide 8 -Slide

The right point is:
A
(0, 10)
B
(0, 5)
C
(5, 0)
D
(10, 0)

#### Slide 10 -Slide

On line RS there is a point that has a first coordinate of 4.
ANS !
timer
0:45

#### Slide 11 -Slide

The 2nd coordinate is ....

4
32

#### Slide 13 -Slide

Before looking at the outcome, let's first
watch the DIRECTION of the LINE
through R and S closely!
See next slide.

#### Slide 14 -Slide

What does all this mean?!

#### Slide 15 -Slide

What does this scheme mean? This:
Watch the ARROWS, that mean moving to the right or up.
+  Going 3 grids to the right, means going up 2 grids, so
+  Going only 1 grid to the right means  going up           grids.
+  Next slide shows how to use this at 10c.
32

#### Slide 17 -Slide

ANS
a whole number plus a fraction!
timer
0:45

#### Slide 18 -Slide

The 2nd coordinate is ...

#### Slide 20 -Slide

The same kind of task as before!
IN PAIRS:
- Check this by a calculation.
- Try to agree on it.
- One of you answers in the next slide!

timer
0:45

??
A
yes, it does
B
no, it doesn't

In the end ...

#### Slide 24 -Slide

It's handy to know this:
+  emptying a sink = legen van een wastafel (exercise 15)
+  relation, variables and units ..... look this up in the
Theory on p.98!
+ a steep descent - een steile afdaling (exercise 17)
+ of course you   DRAW THE GRAPHS WITH A GEO TRIANGLE AND A PENCIL !
For drawing NEVER USE A PEN.

Homework time.