Lesson 5 - Simple interest
Introduction
Watch the video below for an introduction to the lesson.
Activity 1 - Calculating simple interest
Task 1
Watch the video, Calculating Simple Interest.
In your exercise book or folder, write out the notes and example as you follow along with the video.
Calculating Simple Interest
Duration 6:47
Task 2
Practice your simple interest calculations using the Geogebra applet.
Open the applet in a new tab by clicking on the image.
Complete as many problems as you need until you feel comfortable with the process.
Use the Reset button to generate new problems.
Activity 2 - Solving for other values
Task 1
Watch the video, Simple Interest: Solving for Time.
In your exercise book or folder, write out the example as you follow along with the video.
Simple Interest: Solving for Time
Duration 14:21
Task 2
Practice your skills in solving for other values within the simple interest formula using the Geogebra applet.
Open the applet in a new tab by clicking on the image.
Complete as many problems as you need until you feel comfortable with the process.
Use the Reset button to generate new problems.
Activity 3 - Calculating flat rate loan repayments
Task 1
Watch the video, Calculating Regular Repayments (Instalments).
In your exercise book or folder, write out the example as you follow along with the video.
Calculating Regular Repayments (Instalments)
Duration 6:45
Task 2
Practice your skills in calculating loan repayments using the Geogebra applet.
Open the applet in a new tab by clicking on the image.
Complete as many problems as you need until you feel comfortable with the process.
Use the Reset button to generate new problems.
Activities too easy?
Visit the Interest page on Transum.org and try to complete Level 1.
Handing in your work
Don't forget to hand in the work you completed today!
Your teacher will have told you to do one of the following:
Upload any digital documents you created and any photos you took of your written work to your Learning Management system (MS Teams, Google Classroom for example).
Email any digital documents you created and any photos you took of your written work to your teacher.
Make sure you keep any hand written work you did in your exercise book or folder as your teacher may need to see these when you are back in class.