With limited supplies and a cost constraint in mind, fifth graders must filter contaminated water to the most transparent level as possible. During our brainstorming phase, students worked independently to imagine the designs they think would best meet the criteria. There are no wrong answers here, but they must be able to defend their reasoning. Being an engineer means working in teams, which means they must plan and test their water filtration systems together. Check out some of their "imagined" solutions below!