A person writing on a large green chalkboard.
A person in a white top is facing the chalkboard as a guy in orange shirt looks on.
A person is standing at a chalkboard in a classroom writing Asian characters on it.
A young man writes on a chalkboard as another young man looks on.
One man in an orange shirt sits on the front row of a class while the man standing in front of the blackboard wears jeans and a white shirt and writes something with chalk.
A person writes on the chalkboard while a boy watches while sitting at their desk.
A student writing some problems up on a chalkboard.
A teacher writes in Chinese on a green chalkboard in front of a student in an orange shirt.
a man writing in Chinese on a classroom chalkboard
The teacher is writing on the chalkboard as a student sits at their desk.