In our after school STEM Club, students have been working to construct water filters. Their objective is to build the least expensive (from commonly available parts) water filter, that cleans the water the best, and the quickest.
Students purchase materials and evaluate their possible scores, given how much money they spent, using a cost analysis rubric. Next, they test their materials to see what works best and redesign their filters if needed.
The water is judged on color, clarity, smell, and particles.
Students have done an amazing job designing, creating, and testing their filters!