This activity was excellent in that the pupils were on task for the whole lesson and learnt a lot as a result. We did it in the computer room with each child on their own computer. The pupils watch short video clips and answer the questions as they go. I think it helps if the pupils wear headphones but that is maybe just me. For those teachers lucky enough to have access to ipads, I can see this lesson working well on them and it can also be done on the teacher's interactive whiteboard as well I think.