A 45 minutes pilot with 13-14 yo is an interesting challenge.
The problem is to engage them while still giving them useful informations.
I started from the name of the course that was "#Informatics #Elementary" (it was in an elementary school to 10yo). So most of the first lesson was to explain what informatics is all about.
I gifted each of them a cheap address notebook to let them write their personal hacker dictionary starting from those in http://www.tesio.it/documents/vademecum.txt