blackboards in a sentence

Examples

1. He turned to the blackboard and chalked with stenographic speed:
2. On the blackboard, one plus one indeed equals two.
3. Cafe menus are scrawled on blackboards in rainbows of chalk.
4. I don't even have a blackboard in here ."
5. Seifert once broke a blackboard during a halftime pep talk.
6. Try to erase this, try to erase this, from the blackboard
7. Put his hand through the blackboard and chewed him out.
8. Would a blackboard chart of positive externalities involve weight loss?
9. Bart writes on the blackboard and they're off.
10. There was a blackboard for me and one for Tony.