1. Why is access to potable water a global issue, and how do simple innovations help eradicate waterborne diseases like the Guinea worm? 2. How do we measure whether water is safe, and how effective are basic filtration methods at improving water quality indicators like pH? Objective Students will be able to: - Analyze the effects of unsafe drinking water on populations. - Analyze a map to make generalizations about human activities. - Design and engineer a water filtration device. Background These are a few ways this activity can be adjusted for exceptional learners, gifted learners, or exten Duration: 30 Minutes.