In this lesson you will:
learn to find the unit rate
compare the speed of athletes using rates
explore conversion graphs.
A rate is a comparison of two quantities that are in different units. Hourly pay is an example of a rate, e.g. $16.80/h is a comparison of money and time and is read as $16.80 per hour.
We can simplify rates by finding the unit rates, which is how much of something per 1 unit of something else.
For example if an employee worked for 4 hours and made $86, than their unit rate is $21.50/h ($86÷4).
Watch the video for an introduction to rates.
Introduction to Rates
Duration: 7:24
Use the embedded PhET interactive, Unit Rates to practise finding rates and using them.
Choose the Shopping option and complete the questions for each type of fruit and vegetable.
In this interactive you will look at some athletes and their fastest times in various events.
Use your calculator to convert their times to kilometers per hour.
At the end you will be asked to answer some questions about the results of your calculations.
Use the Blue export text button to get your answers ina Word document that you can share with your teacher.
Conversion graphs are used to convert from one unit to another, e.g. conversions between different currencies or metric and imperial measures.
Visit the Conversion Graphs page on the Maths Made Easy website by clicking on the image to open the page in a new tab.
Read through the steps and explore the examples.
Then work through the example questions in your exercise book or folder. Use the Show Answer button on the website to check your working.
Complete the money conversion problem on the Money exchange page of the Don Steward website.
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.