All about Simple Interest

1. SIMPLE
INTEREST
Since this section involves what can
happen to your money, it should be of
INTEREST to you!

2. Mathematics Website
WEEK 4 – STARTER 2
STARTER

3. To be able to calculate simple interest.
OBJECTIVE

4. SIMPLE INTEREST
KEY WORD

5. Annual interest rate
IMPLE INTEREST
FORMULA
Interest paid
Principal
(Amount of
money invested
or borrowed)
Time (in years)
100
I = PRT

6. If you invested $200.00 in an account that paid
simple interest, find how long you’d need to
leave it in at 4% interest to make $10.00.
10 = (200)(0.04)T
1.25 yrs = T
Typically interest is NOT simple interest but is paid semi-
annually (twice a year), quarterly (4 times per year), monthly
(12 times per year), or even daily (365 times per year).
enter in formula
as a decimal I = PRT
100

7. The teacher goes through selected
examples on the following pages of
the iBook:
Pages 84 - 88
Examples from the iBook

8. Struggling students watch video on
simple interest – page 87 of the
iBook. Meanwhile, advanced
students can start with classwork 1.
Watch videos from the iBook

9. G11 Maths Website
WEEK 4 – CLASSWORK 1 SIMPLE
INTEREST
Show an organized solution on your maths
notebook.
CLASS WORK 1
SIMPLE INTEREST
Pair Work

10. G11 Maths Website, “Useful link” folder
Students answer an online worksheet:
http://studymaths.co.uk/workout.php?workoutI
D=53
Show an organized solution on your maths
notebook.
CLASS WORK 2
COMPOUND INTEREST
Individual Activity

11. G11 Maths iBook
1.Page 88, #’s 6, 7, 8, 9, 10
Show an organized solution on your maths
notebook.
HOMEWORK

12. Maths iBook
Page 88, #’s 1, 2, 3, 4, and 5
Show an organized solution on your maths
notebook.
EXTENSION ACTIVITY

13. 1. What is simple interest?
2. Share one or two things you have
learned today.
PLENARY

14. THANK YOU! 