Understand the concept of a ratio and use ratio language to describe a ratio relationship between two quantities. For example, “The ratio of wings to beaks in the bird house at the zoo was 2:1, because for every 2 wings there was 1 beak.” “For every vote candidate A received, candidate C received nearly three votes.”

#### Isolation Drills:

#### Interactive Practice:

- Determine a Number Based on the Ratio – Click on the Start button and then determine the ratio of the given numbers
- Determine the Ratio – Click on the Start button and then determine the number that fits the given ratio
- Inverse Proportion Problems – From Annenberg’s Learning Math series
- Learning ratios and proportions through scale drawings – A text lesson plan
- Percentages and Proportions – Short multiple choice quiz
- Percentages and Ratios – Index of lessons available at AAA Math
- Practice forming Ratios – After you have tried several of the practice problems, scroll down for a quiz
- Proportions – Three-step lesson followed by a quiz
- Proportions and Ratios – Includes a good explanation of means and extremes
- Rates, Ratios and Proportions – Quiz in the format of a two person game
- Ratio – Spy Guys interactive lesson
- Ratio and Proportion – One minute video about ratio and proportion
- Ratio and Proportion – Level 1 quiz
- Ratio and Proportion – Entry level quiz
- Ratio and Proportions – Short video lesson explaining ratios and proportions
- Ratio Introduction – Short explanation from Math for Morons Like Us
- Ratios – Seven pages filled with examples at Purple Math
- Ratios and Proportions – Quiz in the rags to riches game format
- Ratios and Proportions – A thirteen slide interactive show to practice making ratios and expressing proportions
- Teaching Ratios and Proportions – Suggestions for parents to use to help students learn this topic
- Understanding Ratio – A worksheet to print so students can practice working with ratios

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