Great insight Diane, it is so interesting to hear how the change in lesson length had such an impact on the behaviour of the students in terms of the frequency of lessons. I found 45 mins lessons really effective for teenage students who were totally able to do more than 30 min lessons, but seemed to struggle in the last 10 mins of an hour lesson…I think perhaps because many schools do 50 min lessons as their standard lesson length time it has trained young people to be attentive for roughly this amount of time!