Dear Sage, I am a student teacher teaching a 5th year physics class. I'm from Ireland I'm not sure what that equates to there. They would be about 16 years old. The class is very mixed ability. From the looks on their faces I can tell some haven't a clue and others just understand everything straight away. I'm finding it difficult to keep the class at a pace appropriate for everyone. I don't want the more able kids to get bored and I don't want the less able kids to fall way behind. I'm worrying they will end up not learning a thing. As it stands I move at a steady pace but I base it on the slower kids. Is there any advice on how to construct the lesson to please everyone? Any advice appreciated.