In this video, students get the chance to investigate important mathematical concepts and apply them to real world uses. Students will explore how to find the flow of the river by calculating the area of an irregular shape and using stream speed tests. We’ll use measurements from the United States Geological Survey taken at an actual location on the Missouri River and give students the chance to interpret and graph this data. During the original expedition, William Clark determined stream speed flow using modern methods of his time. Students will have the chance to compare his method to the modern methods of the USGS as we explore these mathematical relationships. From the Series:Lewis and Clark Then and Now