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1TH/Vwo §6.1 6.2 6.3 !
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Slide 1:
Slide
Wiskunde
Middelbare school
havo, vwo
Leerjaar 1
This lesson contains
32 slides
, with
interactive quizzes
and
text slides
.
Lesson duration is:
50 min
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Items in this lesson
Slide 1 - Slide
Ch 6: §6.1 6.2 6.3
You've learnt a lot about Word Formulas
already.
However, in order to make sure you really understand the first 3 paragraphs,
here's some more practice!
Slide 2 - Slide
Get organised first!
+ open your Notebook and take
+ a pencil, pen, ruler, eraser before you
First follows the METHOD how to MAKE A FORMULA from a description (=beschrijving).
Slide 3 - Slide
Slide 4 - Slide
Task 1:
Make the formula, take a picture of your work and send it in the next slide.
Work it out
in your Notebook
first!
timer
1:15
Slide 5 - Slide
The formula I made is ......
Slide 6 - Open question
Explanation Task 1
Your Calculation may be a little shorter, as I said.
Most important is the correct formula, of course.
Slide 7 - Slide
This formula is also correct:
timer
0:30
A
attractions x 2.50 + 4 = cost
B
cost = 4 + 2.50 x attractions
C
cost = 2.50 + 4 x attractions
D
attractions x 4 + 2.50 = cost
Slide 8 - Quiz
Task 2: answer question b in next slide
Use the Formula we just made!
Slide 9 - Slide
Answer Task 2:
A
31.50 euros
B
32.00 euros
C
31.00 euros
D
32.50 euros
Slide 10 - Quiz
Explanation Task 2:
Slide 11 - Slide
Task 3: answer question c in the next slide.
Slide 12 - Slide
answer Task 3 (question c)
The old formula was:
A
4 + number of attractions + 3 = cost
B
4 x number of attractions x 3 = cost
C
number of attractions x 3 + 4 = cost
D
cost = 4 + number of attractions x 3
Slide 13 - Quiz
The next slide is about
WALLPAPERING.
Why?
You will soon see!
Slide 14 - Slide
Slide 15 - Slide
Task 4: answer in next slide.
Slide 16 - Slide
Task 4
The fixed amount is ...
(the formula is: hours x 25 + 40 = cost)
A
25
B
40
C
65
D
15
Slide 17 - Quiz
explanation Task 4:
(The formula is:
hours x 25 + 40 = cost)
Time for a Joke!
Slide 18 - Slide
Slide 19 - Slide
Task 5: Now you're asked to Plot a Graph.
First comes the Method once more!
Slide 20 - Slide
Slide 21 - Slide
Task 5: Now you're asked to Plot a Graph.
Make the Table and Graph, take a pic and send it in in the next slide! You may use the PAPER BOOK, p.234: it is exercise E4!
Tip: in the Table take numbers 0, 2, 4, 6, 8 and 10 for the hours.
timer
3:00
Slide 22 - Slide
Task 5 Table and Graph are here:
Slide 23 - Open question
Solution
Task 5:
Slide 24 - Slide
Task 6: Key in your answer in next slide.
Note:The answer for this question you really cannot READ OFF
accurately from your graph. The answer is NOT a whole number.
Try to solve it with a CALCULATION!
Slide 25 - Slide
Answer Task 6:
A
4 hours
B
4 hours and 5 minutes
C
4.5 hours
D
5.4 hours
Slide 26 - Quiz
The calculation plus the final answer:
The formula is: hours x 25 + 40 = cost
The cost is: 152.50 euros
The calculation runs as follows:
152.50 - 40 = 112.50
112.50 : 25 = 4.5
So the number of hours is takes is 4.5
Slide 27 - Slide
Task 7:
Give an example of a LINEAR FORMULA.
Key in in the next slide.
Slide 28 - Slide
Example Linear Formula:
Slide 29 - Mind map
Solution Task 7:
There are an infinite (=oneindig) number of answers here. Just a few:
- time in hours x 3 + 15 = money earned in euros
- cost in euros = 3000 - 15 x tickets sold
- water level in cm = time in minutes x 15 + 300
Slide 30 - Slide
So, you have worked hard on all 3 paragraphs now by this LessonUp.
Hope you did well.
However, most important is that you PRACTISED a lot.
Repetition (=herhaling) is important to really take in something new!
Next slide shows you the Homework.
Slide 31 - Slide
Use the remaining time well.
Finish
Book 1B: p.42/43 P1 t/m P10 (not P7 + P9) and also
Book 1A: p.241 5 t/m 8
Slide 32 - Slide
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