Was the National Road important to the development of the United States? Guiding Questions: How much were the tolls along the National Road? How do you use the mile markers to calculate distances? Objective Student Objectives: After completing the lesson students will be able to: • Calculate one toll rate • Calculate one distance from the mile markers Background The Artifact Activities form unit 10 of a complete teacher’s guide for 3rd grade students, entitled “Traveling the National Road.” This unit has students reenact a tollhouse on the National Road where the students are required to calcu Duration: 60 Minutes.