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Unit 2 - Ratios, Rates and Proportional Reasoning
Alberta Education Specific Outcomes
1. Demonstrate an understanding of ratio and rate.
2. Solve problems that involve rates, ratios and proportional reasoning.
Need to know Definitions
- Two term ratio
- Three term ratio
- Part to part ratio
- Part to whole ratio
- Rate
- Unit Rate
- Unit Price
- Proportion
Textbook
2.1 Two-Term and Three-Term Ratios
Ratios
Ratios
A ratio compares values.
A ratio compares values.
A ratio says how much of one thing there is compared to another thing.
There are 3 blue squares to 1 yellow square
Ratios can be shown in different ways:
A ratio can be scaled up:
Here the ratio is also 3 blue squares to 1 yellow square,
even though there are more squares.
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