Chalkboard

What I can't bear is the sound of chalk squeaking on a chalkboard.

On the chalkboard is written your new timetable.

The math professor wrote the proof on the chalkboard.

The teacher's nails scratched the chalkboard and we all cringed.

I was watching the teacher write on the chalkboard.

Tom wrote an inspirational quote on the chalkboard.

Come to the chalkboard.

This chalkboard is old.

Liquorice is the food equivalent of nails on a chalkboard.

The teacher wrote the question on the chalkboard.