This lesson plan; "How streams and rivers flow" is an open-ended STEM activity that will allow for the students to create their own paths for water to flow down. This lesson plan is a word.doc, and walks you through the activity step-by-step, clearly explaining the materials you will need, the procedure, the objectives, and the assessment plan.This document also includes several accommodations that can be made on altering the activity to make it easier or more difficult for the students.