I have an interview for a position at a school I really want next week. The lesson is a 50 minute jaunt with a group of mixed Year 7's, with the title 'What has Science got to do with Global Warming?'. I have found loads of fantastic resources - videos, powerpoints, demo's but these are all teacher-led activities. Has anyone got any ideas for exciting and engaging pupil-led activities on this topic? Thanks in advance!