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1TTO §6.2 Graphs from formulas
1TTO §6.2 Graphs from formulas
Many TABLES to be made and many
GRAPHS to be drawn this paragraph.
First we do a part of the paragraph together.
If you participate well, you may SKIP a few exercises from the paragraph.
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Slide 1:
Tekstslide
Wiskunde
Middelbare school
havo, vwo
Leerjaar 1
In deze les zitten
31 slides
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en
tekstslides
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Lesduur is:
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1TTO §6.2 Graphs from formulas
Many TABLES to be made and many
GRAPHS to be drawn this paragraph.
First we do a part of the paragraph together.
If you participate well, you may SKIP a few exercises from the paragraph.
Slide 1 - Tekstslide
Materials ....
+ Take before you the right things:
+ pencil, pen, geo triangle or ruler, eraser
+ Notebook and Textbook 1A
Slide 2 - Tekstslide
7
This was the Theory.
Next slide shows us an example.
Slide 3 - Tekstslide
6
Slide 4 - Tekstslide
5
Slide 5 - Tekstslide
Steps of 60 is fine, because ...
A
you have to put 300 on the axis; then you need 300 : 60 = 5 cm.
B
the time goes from 0 to 5
C
the distances go up by 60 all the time
D
there is no zigzag needed
Slide 6 - Quizvraag
Question about this task:
What to do first, before plotting the graph?
Answer in next slide.
Slide 7 - Tekstslide
First you ....
Slide 8 - Woordweb
Solution:
First you ...
MAKE A TABLE !
As follows:
Slide 9 - Tekstslide
Slide 10 - Tekstslide
1
You may skip exercises 9, 10 and 11.
Now start doing 12, by copying and filling in the Table above!
Slide 11 - Tekstslide
Note: only the even number are used, because otherwise there would be 15 numbers...
Slide 12 - Tekstslide
Question: Is a 'zigzag' a good idea or not?
Slide 13 - Tekstslide
A zigzag: a good idea? (Why?)
A
no
B
yes
Slide 14 - Quizvraag
Solution:
Yes. Because the height only starts at 120 cm.
(By the way: the Solutionsbook does not do this!)
Slide 15 - Tekstslide
Question: What is a good scale for the corresponding Graph?
Why? For the answer see next slide.
Slide 16 - Tekstslide
Homework time
Do of §7.2 now: 11, 12 and 13
Plotting good Graphs, using a pencil and a geo/ruler.
1.make it
2.correct your work with the Solutionsbook
3.if asked take pics and
4.send them in in Magister
Slide 17 - Tekstslide
Question: What is a good scale for the vertical axis
of the corresponding Graph?
Solution: 260 - 120 = 140
140 : 20 = 7 , so if you use as a scale:
20 cm in table = 1 cm in graph, then you need 7 cm.
That's fine.
Slide 18 - Tekstslide
Now PLOT the GRAPH! Remember:
1. a zigzag at height 160 cm
2. scale on vertical axis: 20 cm in 1 cm.
Make your teacher happy: draw a beautiful graph!
Slide 19 - Tekstslide
Slide 20 - Tekstslide
In this exercise you can see that 2 Graphs are plotted, in THE SAME COORDINATE SYSTEM!
NOTE 1: First a handy TIP about the Tables:
USE a DOUBLE TABLE - saves you some work.
NOTE 2: An important remark in 13a is: 'Take the horizontal axis to 10.'
Slide 21 - Tekstslide
Slide 22 - Tekstslide
Part 2 of 7.2
Slide 23 - Tekstslide
Slide 24 - Tekstslide
Question about d:
What special point of both graphs is meant in this question?
Answer in the next slide.
Slide 25 - Tekstslide
The special point is ....?
Slide 26 - Woordweb
Solution:
the point of intersection
Next slide explains us how you can
see from the Formula if the Graph
is Rising or Falling.
Slide 27 - Tekstslide
Slide 28 - Tekstslide
Send in S12
Slide 29 - Open vraag
Slide 30 - Tekstslide
Homework time
Do §7.2 now: S14, 14 and 15.
Plotting good Graphs, using a pencil and a geo/ruler.
1.make it
2.correct your work with the Solutionsbook
3.if asked take pics and
4.send them in in Magister
Slide 31 - Tekstslide
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