Hi Everyone, I have to plan a 20minute lesson for an interview this week and wondered if I could nag the worlds of wisdom on here. Its secondary science (Lower ability yr 7) and can pick any topic of my choice. I know the whole school focus is progress, assessment and differentiation by outcome and the dept focus is using investigative approaches I have a few ideas tinkleing away but with such a broad spectrum Im struggling to find one thing to focus on!! I know with 20mins I have to keep it simple, showing definate progress and assessment. Any ideas would be great!!!!!