This activity has been adapted from the CSI Web Adventures site and is not my own creation, but I thought it was a good activity for students to do some problem solving, collaborative work, and get an idea what happens to evidence "behind the scene" so to speak when it is analyzed at the lab. Students can work in pairs, and once they have made some cost estimates, you can share the "lab results" with them to see if they can solve the case. A good activity for early in the year to get students th