New unit on Rates and Ratios

Our new unit on Rates and Ratios will commence on Friday November 1st with an Inquiry based question for students to work in groups to review what are ratios and rates.

Rate: is a comparison of two quantities measured in different units.
Ratio: is a comparison of two quantities measured in the same unit.

Vocabulary to know in this unit:
Equivalent ratios
Unit rate
Proportion
part-to-part ratio
part-to-whole ratio

Curriculum expectations covered in this unit from the Numeracy and Number Sense strand:

1. Identify and describe real life situations involving two quantities that are directly proportional (eg. the number of servings and the quantities in a recipe)
2. Solve problems involving proportions, using concrete materials, drawings and variables
3. Solve problems involving rates (eg. A pack of 24 cds costs $7.99, a pack of 50 cds costs $10.45. What is the most economical way to purchase 130 CDs?)