Lesson 1
Year Level:
11
Topic/Theme:
Annualising an Interest Rate
Curriculum Learning Area:
Mathematics
Strand:
Stage 1 General Mathematics: Investing and Borrowing
Content Descriptor and Code:
Subtopic 1.1: Investing for interest
General Capabilities:
Length of lesson
in minutes:
1 * 55 minutes
1. Literacy: students should grasp the content through reading, listening and watching.
2. Numeracy: Students should have the ability to recognise the two-dimensional shapes and three-
dimensional objects.
3. Ability to use Graphic Calculators.
4. Basic ICT knowledge

Learning Intention (objective) Students are
learning to:
*Describe x , *Demonstrate x , *Evaluate x
Students are learning to:
 To explore the effects of changing the compounding period on the amount of interest earned.
Success Criteria (assessment): *Describe the
key indicators of what meeting the learning
intention look like
Students will be able to:
 Describe Annualising an Interest Rate.
 Students using the formula to explore the effects of changing the compounding period on the
amount of interest earned.
 Integrate graphic calculators to find the effective interest rate.
Time
5 Minutes - Introduction
20 Minutes - Introduction
Teacher activity
Student Activity
Resources
 Recap Compound interest with
 Responds to the teacher with
 White board
different compounding periods
the solution of problems.
 Markers
by asking questions to students
and solving two textbook
problems.
 Lead to the concept
Annualising an Interest Rate
 Teacher writes compound
 Students engage in the class
 White board
interest formula to find Future
by responding questions.
 Markers
value FV = PV * (1+i/k) ^k*n.
 Graphic Calculators
 Teacher confirms students
familiar with all the variables in
the formula by asking
questions.

Teacher writes one example
 Observe the problem
problem, which compare 2
banks interest rate compounded
in different periods on the white
board.
 Instruct students to get
 Students give answers and
information from the question
discuss with teacher.
such as Interest rate and number
of years based on compounding
periods.
 Then explains how to find
 Ask doubts.
annualised interest rate of both
banks.
 Teachers provides Graphic
 Follow the teacher.
calculator instruction to find
Annualising an Interest rate.
20 Minutes- Activity 1: Individual
using Graphic calculator to finish
the worksheet.



5 Minutes - Conclusion
After class activity
Instruct to do textbook Exercise
3C.5 using Graphic calculator.
Teacher walks around the class
and helps students to do the
exercise.
Clarify the doubts.


Students follow the
instruction and workout the
questions.
Students find the answer
using graphic calculator and
confirm the answer with
teacher



Graphic Calculators
Book
pen



Graphic Calculators
Book
Pen

Teacher provides guidance to
make a conclusion with the
summary of the concept they
have learned.
Teacher asks a question to student to
research and submit as homework

Additional Resource
What other factors, apart from
the interest rate, should be
considered when deciding
where you should invest the
money?
Exercise 3D.1


Students follow the
instruction and workout the
questions.
Students find the answer
using graphic calculator and
confirm the answer with
teacher