Almost none. How many times did students just stand by their mobile phones and look for one answer to one question in a 15-minute crossword puzzle. And their reading literacy? Zero. But I have to believe that if I build the students myself, it will be better. I am also sure of my mistakes in explaining, I will put more emphasis on explaining the activity, I will go through one sample QR code with them. And the motivation could have been better.
But I have to believe that if I build the students myself, it will be better.