90 Minutes | 4th – 8th Grades
In the water filters activity, students will be introduced to the sources of pollution through the Who Polluted the Charles River activity. They will then break into small groups and design a water filter using a two liter bottle and a variety of materials which can be ‘purchased’ using their allotted budgets. The materials available range from coffee filters to sand and gravel, and give students a perspective on the challenges of turning polluted water into potable water. The activity ends with a discussion about water shortage issues, and water reuse initiatives that will be more and more prevalent in water-scarce areas around the nation and world.