This curriculum was created by a group of teachers, higher ed professionals and industry colleagues. Our goal was to create a problem based learning unit which would not only engage students in the engineering practices mandated by the NGSS, but to also allow students to learn about natural selection. We created the lab which allows students to "see" antibiotic resistance happen in the laboratory setting. Students are challenged with coming up with creative solutions to this very complex problem. I have uploaded the unit plans here.