# 1TH/Vwo §7.1 7.2 7.3 !

Ch 6 §7.1   7.2   7.3
You've learnt a lot about Word Formulas
However, in order to make sure you really understand the first 3 paragraphs,
here's some more practice!
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Slide 1: Slide
WiskundeMiddelbare schoolhavo, vwoLeerjaar 1

This lesson contains 31 slides, with interactive quizzes and text slides. Lesson duration is: 50 min

## Items in this lesson

Ch 6 §7.1   7.2   7.3
You've learnt a lot about Word Formulas
However, in order to make sure you really understand the first 3 paragraphs,
here's some more practice!

#### Slide 1 -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

Make the formula, take a picture of your work and send it in the next slide.
Work it out
first!
timer
1:15

#### Slide 4 -Slide

The formula I made is ......

#### Slide 5 -Open question

Your Calculation may be a little shorter, as I said.
Most important is the correct formula, of course.

#### Slide 6 -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 7 -Quiz

Use the Formula we just made!

A
31.50 euros
B
32.00 euros
C
31.00 euros
D
32.50 euros

#### Slide 11 -Slide

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 14 -Slide

The fixed amount is ...

(the formula is: hours x 25 + 40 = cost)
A
25
B
40
C
65
D
15

#### Slide 15 -Quiz

(The formula is:
hours x 25 + 40 = cost)
Time for a Joke!

#### Slide 18 -Slide

First comes the Method once more!

#### Slide 20 -Slide

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 21 -Slide

Task 5 Table and Graph are here:

Solution

#### Slide 23 -Slide

Try to solve it with a CALCULATION!

#### Slide 24 -Slide

A
4 hours
B
4 hours and 5 minutes
C
4.5 hours
D
5.4 hours

#### Slide 25 -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 26 -Slide

Give an example of a LINEAR FORMULA.
Key in in the next slide.

#### Slide 27 -Slide

Example Linear Formula:

#### Slide 28 -Mind map

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 29 -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 30 -Slide

Homework (not much as you've worked hard already!):
p.234: E1  and E3 (E2 and E4 you've just done!)
That's all.
Just make them good.
Check them with the Solutionsbook.
(No need to send them in this time.)