老师们不会在黑板上用粉笔。

Teachers won't use chalk on a blackboard.

每个孩子都有一块小黑板和一块粉笔。

Each child had a small board and a piece of chalk.

老师将不会再用粉笔在黑板上写字。

The teachers won't write on the blackboard with chalk.

因为没有笔，孩子们用粉笔在石板上写字。

As there were no pens children used chalk to write on their slates.

下课后，学生应该擦掉黑板上的粉笔。

After class, students are supposed to clean the chalk off the blackboard.