This lesson was so fun to watch. I felt like l was breathing in the students excitement. The students strung string across the hallway and covered it with aluminum foil. They placed the string in a difficult pattern so it would be hard to walk through much like the laser trap in spy movies. After they had their "lasers" up they hooked up the MaKey Makey to their lasers and tried to walk through. If they touched the wires their chromebook would sound because they completed the circuit. Such a fun unique lesson.