1Th/vwo Ch5 totally!/SUMMARY

Ch 5 Ratio - more practice
Rounding off this Chapter, you'll get some tasks,
to show what you've learned by now.
A little explanation, before and after the task, is also given,
to refresh your memory.

1 / 15
suivant
Slide 1: Diapositive
WiskundeMiddelbare schoolhavo, vwoLeerjaar 1

Cette leçon contient 15 diapositives, avec quiz interactifs et diapositives de texte.

time-iconLa durée de la leçon est: 50 min

Éléments de cette leçon

Ch 5 Ratio - more practice
Rounding off this Chapter, you'll get some tasks,
to show what you've learned by now.
A little explanation, before and after the task, is also given,
to refresh your memory.

Slide 1 - Diapositive

Get organised first...
Take before you:
+ pencil, pen and eraser
+ your Notebook 

Slide 2 - Diapositive

Slide 3 - Diapositive

Task 1:   Scale task.
Posters are made for the schoolparty.
A beetle (kever) is drawn by you.
The picture is 110 cm long. The beetle is 0.55 cm long.
Key in the right scale in the next slide.

timer
1:15

Slide 4 - Diapositive


A
1 : 200
B
200 : 1
C
1 : 20
D
20 : 1

Slide 5 - Quiz

Solution Scale task:
The picture is 110 cm long. The beetle is 0.55 cm long. The key question is:
.... cm in the drawing is  ... cm in reality
Let's calculate how many times 0.55 cm fits in 110 cm.
110 : 0.55 = 11000 : 55  
As 55 fits two times  in 110, it fits two hundred times in 11000
So, the scale is         200 : 1           







Slide 6 - Diapositive

Task 2: 
timer
1:00

Slide 7 - Diapositive

Send in a pic of your calculation (the ratio table!).

Slide 8 - Question ouverte

Key in the discount (reduction).

Slide 9 - Carte mentale

Solution Task 2:

Slide 10 - Diapositive

Slide 11 - Diapositive

Task 3:

Key in your answer in the next slide.
By the way, you may also 
work with 10 percent instead of 
1 percent.
timer
1:00

Slide 12 - Diapositive

Solution:
Number of pupils   30    3    24
percentage              100   10    80
So because the girls are 80 percent, there are 24 girls.


Slide 13 - Diapositive

How good is your understanding about ratio tables now?
On a scale of 1 to 10.

Slide 14 - Carte mentale

Homework time

Slide 15 - Diapositive