Edison 2 - Unexpected Line Tracking

We have completed a process whereby the Edison have now had their use modelled in the junior classrooms at Auroa Primary School.  I have spent ten to fifteen minutes in every classroom of the junior school with the classroom teacher present and modelled a basic start up lesson with the Edison.  As a result of which in one classroom a teacher has instigated a 'genius hour' with her students, and as part of this process a 'discovery' time was started with robots as a student option.  This required two Room Three (my) students to assist their students.   One of the Room Three students while working outside with these students experimented with the 'line tracking' option on the concrete area outside of the classroom - this is the result:
Edison Robot - Line Tracking Outside! from myles webb on Vimeo.
While the tracking was not perfect the actual line that it was following was not painted completely - and one would suspect that it would be possible to follow painted lines in an outside environment. There were grooves in the concrete at points that caused the Edison some difficulty - however it was an interesting addition to the Edisons capabilities.