Ratio and Proportion

For some extra instruction on ratios and proportions, take a look at these videos from the Khan Academy at khanacademy.org

1. http://www.khanacademy.org/math/arithmetic/basic-ratios-proportions/v/introduction-to-ratios--new-hd-version.

2. http://www.khanacademy.org/math/arithmetic/basic-ratios-proportions/v/understanding-proportions.

3. http://www.khanacademy.org/math/arithmetic/basic-ratios-proportions/v/ratios-as-fractions-in-simplest-form.

4. http://www.khanacademy.org/math/arithmetic/basic-ratios-proportions/v/find-an-unknown-in-a-proportion-2.

5. http://www.khanacademy.org/math/arithmetic/basic-ratios-proportions/v/finding-unit-rates.

6. http://www.khanacademy.org/math/arithmetic/basic-ratios-proportions/v/finding-unit-prices