Activity 3: Compound interest
1. Remind students of the range of places that people put their savings (Lesson 6: Activity 1).
2. Divide the class into small groups.
3. Invite each group to come up with a list of questions they might have if they were opening a savings account.
Note:
Depending on your class you may wish to provide some of the following prompts:
- What are you saving for?
- Will you be able to access your money when you need it?
- What is the interest rate?
- Is there a certain amount of money you need to deposit in the account to get a particular interest rate?
4. Invite feedback from a sample of groups, recording student responses on the white/blackboard.
5. Explain that a savings account not only earns interest on the original amount deposited, but it also earns interest on the interest – this is called compound interest, and over time it can really add up.
6. Ask each student to write down which they would pick – €1 million now or a cent doubled every day for 30 days?
8. Ask students if anyone knows what % compound interest rate is shown on Teacher Resource Sheet: Compound interest? (Answer = 200%)
9. Explain that the students who choose the immediate €1 million (Step 6) would lose out on over €4 million in the long run!
10. Conclude by explaining that although compound interest rates are never as high as this example, money in a savings account can grow, as compound interest is paid both on money deposited and on the interest accumulated to date.