Unit Rate Activity: Find the Better Deal - MathTeacherCoach Unit Rate Practice: Ask students to practice finding the unit rate, where it ends up being less than a dollar. A good example to show this is with fruit. Describe that someone might buy 12 ounces of blueberries for $2.94. If you have a photo or pint of blueberries, you can show it so students have a good idea of sizes.