Ellis Holbrook stood but a step from the blackboard, just behind him.
For a slate or blackboard, he used the beach, as did Archimedes of the olden time.
One day the teacher had ruled the blackboard with very fine lines.
This was the writing of words on the blackboard for the pupils to use 118 in sentences.
Crayon will not write on the smooth, glazed parts of a blackboard.
He asked questions by means of writing them on a blackboard.
Couldn't I get teacher mad, talking at her from the blackboard?
Then the words written on the blackboard came back to his mind.
And we have pink and red and blue crayons to draw on the blackboard with.
In those cases I did not say, "No, you are wrong; this is the way," and go to the blackboard.