How will you help your classmate if heshe forgets to bring hisher pencil?

I would offer to share my pencil with my classmate. If I only had one, I'd offer that one and suggest we work together to share it or see if anyone else nearby has an extra pencil. If I had multiple, I'd simply offer one without hesitation. I might also suggest they ask the teacher if they have any spare pencils or if there's a place in the classroom where extra supplies are kept.