# Identification and Writing of Equivalent Rates

## Understand that equivalent rates are equivalent ratios.

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Practice Identification and Writing of Equivalent Rates

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Have Feet, Will Travel

Credit: National Archives and Records Administration
Source: http://commons.wikimedia.org/wiki/File:Stonewall_Jackson.jpg

Have you ever heard of Stonewall Jackson? Thomas Jonathan "Stonewall" Jackson was a Confederate general during the American Civil War, who led his troops as they moved—all on foot. Jackson became known for his forces' incredible speed. Their speed is a unit rate that has people amazed to this very day.

#### Why It Matters

Because their rate of travel was so swift, Stonewall Jackson's men became known as the "foot cavalry." Usually, a cavalry refers to troops on horseback, but Jackson's men did not ride horses—their only means of travel were their feet! The term was coined as a nod to their rapid speed, which resulted from Jackson's strategic knowledge of the terrain and his men's determination.

Credit: Joel Dorman Steele, A Brief History of the United States
Source: https://archive.org/details/briefhistoryofun00stee

The rate of speed at which the troops traveled can be expressed mathematically as a unit rate. Jackson's foot cavalry was known for traveling at a speed greater than 4 miles per hour—definitely faster than the average man, who walks at a unit rate of about 3 miles per hour. Today, there is a 100-mile trail run in Fort Valley, Virginia with a section of it named the "Stonewall Jackson Foot Cavalry Division" in honor of the men who used their feet to travel great distances at extraordinary speeds!

#### Explore More

Play the games at the following links to practice working with unit rates and equivalent ratios.

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