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1TH/vwo §9.3 Working with formulas
§ 9.3 Working with formulas
We've done so much with formulas, in § 9.1 and § 9.2:
+ shortening + simplifying + you name it!
However you might wonder:
What on earth can we DO with those formulas ?!
This burning question will be answered now!
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Wiskunde
Middelbare school
vwo
Leerjaar 1
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§ 9.3 Working with formulas
We've done so much with formulas, in § 9.1 and § 9.2:
+ shortening + simplifying + you name it!
However you might wonder:
What on earth can we DO with those formulas ?!
This burning question will be answered now!
Slide 1 - Slide
Before we start with §9.3 ...
a look back at this week,
by
- thinking about it yourself
- reflecting on it with your neighbor
- with the class
Slide 2 - Slide
What is your most important
+ plus and your main
+ minus from the outing (uitje) ?
timer
0:30
Slide 3 - Slide
Compare with your neighbor:
Your
+. and your
-
timer
1:00
Slide 4 - Slide
Sharing as a class now.
Slide 5 - Slide
In this paragraph we will practise how to calculate the result (= outcome) of a formula
Slide 6 - Slide
Below are two examples.
Watch how the x sign returns, when filling in a number!
Slide 7 - Slide
A little more about the multiplication sign follows.
And about the order of operations, too.
Just watch the next slide!
Slide 8 - Slide
Important: When you replace variables(letters) with numbers, the multiplication sign returns.
Slide 9 - Slide
And here is an example:
Slide 10 - Slide
There are a few more complicated exercises in this paragraph.
- That's why we now do one of them!
Making it easier to deal with
the others on your own,
later this lesson.
- Open your Notebook and get a pen, please.
Slide 11 - Slide
Slide 12 - Slide
Make 22a in your
Notebook, now.
timer
1:30
Slide 13 - Slide
SOLUTION:
Slide 14 - Slide
Now make 22b in your Notebook. Good luck!
timer
1:30
Slide 15 - Slide
Solution:
Slide 16 - Slide
Finally
make
22c in your Notebook.
timer
1:00
Slide 17 - Slide
Finally
make
22c in your Notebook.
Solution:
SOLUTIONjkhj
Solution:
Slide 18 - Slide
What's wrong here is this: the number of days should be done times 40, but it isn't!
TIP for improvement: BRACKETS are missing.
But where to put them? Think about it and be amazed in the next slide!
Slide 19 - Slide
Homework: § 9.3
not 22, that we just did together.
HAVO and H/V: Support or Standard path
2Vwo, then you'd better do the Challenge path!
VWO: make the Challenge path.
Slide 20 - Slide
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