"Hi Preston Your suggestion maybe great , also Your's Christie... I have to keep visualy track of the path made ​​sure that students see e..."

"Hi Thx a lot for your answers, I start work on your suggestions and I will let you know again thanks and happy holidays to you"

"Hello! a question please ... How can I show a diagram of the route taken by a person who complete the course or part of it?  I simply ne..."