In deze les zitten 17 slides, met interactieve quiz en tekstslides.
Lesduur is: 50 min
Onderdelen in deze les
What exercises should we discuss on the board?
Slide 1 - Open vraag
§7.2 Exponential growth
The learning goals are:
+ how to recognise exponential growth
+ how to find the growth factor
Slide 2 - Tekstslide
§7.2 Exponential growth (??!)
Some basic knowledge
about Exponential growth.
After all, that is what this § is about!
Slide 3 - Tekstslide
Exponential growth
If you multiply a number by the same factor, every time, for the same increase in units of time, we say there is exponential growth.
If there is exponential growth, we call the factor you multiply by, the growth factor.
Example: The number of bacteria increases by 50% every day.
Slide 4 - Tekstslide
Exponential growth
If there is exponential growth, we call the factor you multiply by, the growth factor.
We even call it this, if the factor you multiply by is between 0 and 1 (so a decrease !).
Example: The number of trees decrease bij 20% every year --> New amount is 80.
Slide 5 - Tekstslide
Exponential growth
To check IF a table or graph corresponds to exponential growth, you have to calculate the growth factor for each pair of consecutive amounts. Because amounts are often rounded off, the growth factor is only approximately the same every time.
Now follows
a slide
on personal
growth!
Slide 6 - Tekstslide
Slide 7 - Tekstslide
Let's do 13 now.
Open your Notebook and write down your answers in your Notebook.
timer
5:00
Slide 8 - Tekstslide
Let's do 14 now
timer
5:00
Slide 9 - Tekstslide
Let's do 17 now.
Write down your answers in your Notebook.
timer
1:30
Slide 10 - Tekstslide
Suppose the growth factor is 0.87, then there is a decrease.
Slide 11 - Tekstslide
Make question 17c now:
timer
0:45
Slide 12 - Tekstslide
SOLUTION:
Slide 13 - Tekstslide
Task:
Now do 'd', using your Calculator.
FIVE calculations are asked from you!
Write them all down in your Notebook.
Finally COMPARE the five answers and draw a CONCLUSION.
timer
2:00
Slide 14 - Tekstslide
Slide 15 - Tekstslide
Finally this important information,
summarising important things from 17, that we just made!
Lesduur is: 50 min
