Apart from that, I should say, that the students have been really engaged in all the activities, which were basically oral, and also very interested with the topic. At the end, you realize, as teacher,  how much students have learnt and how the have had  fun with the activities.  I definitely think, that is very worth to work like this, with project based learning,as students have a great chance to speak in English in a very meaningful way. It is very important to take language into account when planning, in order to provide students with lot of scaffolding that will help them to speak English in class