Look at the blackboard, everyone.

Ann wrote something on the blackboard.

I erased the blackboard for the teacher.

The sentence on the blackboard was erased.

I started writing English questions on the blackboard.

The teacher is writing on a bamboo blackboard.

Compare your sentence with the one on the blackboard.

Our math teacher drew a circle on the blackboard.

Again, the first one to go to the blackboard to answer questions.

Hey, sir, the function on the blackboard is not exponential, but trigonometric.

And I'd like you to imagine that that's a blackboard, and I just used some chalk on there.

Security experts have written three words on a blackboard at the front of the room adversaries, neutrals, allies.

Just imagine, in a classroom a teacher writes on the blackboard and a blind student can see what's written and read using these non visual interfaces.

I found out that advances in science rarely come upstream from an ability to stand at a blackboard and conjure images from unfolding mathematical propositions and equations.

I would stand before a class and give a one hour lecture. Sure, the blackboard gave way to an overhead projector, and then to PowerPoint but, otherwise, the basic classroom production system seemed to change little.

And it's the dilemma that this Chinese man faces, who's language is spoken by more people in the world than any other single language, and yet he is sitting at his blackboard, converting Chinese phrases into English language phrases.

Now, the first day of my graphic design training at Penn State University, the teacher, Lanny Sommese, came into the room and he drew a picture of an apple on the blackboard, and wrote the word Apple underneath, and he said, OK. Lesson one. Listen up.

I was looking for a picture of graffiti, little text input language, and I found the website dedicated to teachers who want to make these, you know, the script writing things across the top of their blackboard, and they had added graffiti to it, and I'm sorry about that.