Sorry to sound a miserable old codger, but I get fed up of asking "why do you think we should plan your lesson?". YOU have applied for a job. YOU want to impress the school with YOUR lesson. So what do YOU think will be interesting? Submit that and I imagine several people will give suggestions for improvements, recommend alternatives or offer resources. But PLEASE - do the work yourself. If I was interviewing you, I would want to employ someone who can deliver interesting lessons every day, not someone who hasn't got an idea in their head. I always ask "if you were teaching XXX to class YYY, what would you do?", and I look for knowledge and inspiration. Good luck.