1-4 Formulas, exponential growth and percentages (p. 16)

1-4 Formulas, exponential growth 
       and percentages (p. 16)
Bluetooth 
- ON
- VPN off

Stationary
- Texbook and 
   writing book
- Pen, pencil
- Calculator
- iPad
Report
- NO


Lessonup
- Yes
Bags in
the cuboard
Phones in the phone bag
1 / 21
volgende
Slide 1: Tekstslide
NatuurkundeMiddelbare schoolhavoLeerjaar 3

In deze les zitten 21 slides, met interactieve quizzen en tekstslides.

time-iconLesduur is: 50 min

Onderdelen in deze les

1-4 Formulas, exponential growth 
       and percentages (p. 16)
Bluetooth 
- ON
- VPN off

Stationary
- Texbook and 
   writing book
- Pen, pencil
- Calculator
- iPad
Report
- NO


Lessonup
- Yes
Bags in
the cuboard
Phones in the phone bag

Slide 1 - Tekstslide

  • Determine the factor when there is exponential growth.
  • Determine the formula if you have the table for exponential growth between two variables.
  • Use percentages to calculate growth over more than one time interval.
  • Explain when there is a percentage increase,and when there is a percentage decrease.

Slide 2 - Tekstslide

Percentages
  • Exponential growth can be expressed in percentages.
  • In this case, the number increases or decreases by the same percentage for each unit of time.
  • You multiply by the same 
      factor each time.

Slide 3 - Tekstslide

26 a to e
timer
3:00

Slide 4 - Tekstslide

26a
A
T=7501,15t
B
T=7500,85t
C
T=1,15750t
D
T=0,85750t

Slide 5 - Quizvraag

26b
A
F=240001,45t
B
F=240005,5t
C
F=240001,045t
D
F=240000,945t

Slide 6 - Quizvraag

26c
A
R=30250,905t
B
R=30251,095t
C
R=30250,5t
D
R=30250,95t

Slide 7 - Quizvraag

26d
A
B=10000000,2t
B
B=10000002t
C
B=10000000,02t
D
B=10000000,98t

Slide 8 - Quizvraag

26e
A
D=25001,5t
B
D=25002,5t
C
D=25000,5t
D
D=25001,15t

Slide 9 - Quizvraag

KBUTXK

Slide 10 - Tekstslide

Increase or decrease?
  • You can use the growth factor to calculate the percentage by which a number increases or decreases per unit of time.
  • A growth factor g larger than 1 corresponds to a percentage increase
  • A growth factor g between 
       0 and 1 corresponds to a 
      percentage decrease.

Slide 11 - Tekstslide

29 a to d
timer
3:00

Slide 12 - Tekstslide

29a
A
increase 29%
B
decrease 29%
C
increase 71%
D
decrease 71%

Slide 13 - Quizvraag

29b
A
increase 20%
B
decrease 20%
C
increase 80%
D
decrease 80%

Slide 14 - Quizvraag

29c
A
decrease 95%
B
increase 95%
C
decrease 5%
D
increase 5%

Slide 15 - Quizvraag

29d
A
Increase 9%
B
decrease 9%
C
increase 109%
D
decrease 109%

Slide 16 - Quizvraag

Slide 17 - Tekstslide

30 a to c (not mcq)
timer
3:00

Slide 18 - Tekstslide

Slide 19 - Tekstslide

Conclusion:
  • Exponential growth can be expressed in percentages. 
          Increase = (100 + %) / 100
         Decrease = (100 - %) / 100

  • Percentage increase - g is larger than 1
       Percentage decrease - g is between 0 and 1

Slide 20 - Tekstslide

Try on your own
1, 2, 5 and 7
TRY ON YOUR OWN
23, 24, 25, 27, 28 (p. 16)
RULES:
  • In your writingbook
  • Use: Textbook
  • Discussion when you are stuck is allowed


timer
13:00
Extra excercise: B7, B8 (p. 27)
Challenge: C4 (p. 30)

Slide 21 - Tekstslide