Dark with white markings, And smooth like a rock. Where learning occurs, I help convey thought. What am I?

Answer: Blackboard/chalkboard.

More Classic Riddles with answers

More Classic Riddles

Did you hear about the soilder who bought a camouflage sleeping bag?
Duels of good and evil, A fighter of good am I, Revealed beside watched words, King of the black night sky. What am I?
Five hundred begins it, five hundred ends it, five in the middle is seen; first of all figures, the first of all letters, take up their stations between. Join all together, and then you will bring before you the name of an eminent king. Who is it?
Flat as a leaf, round as a ring; Has two eyes, can't see a thing. What is it?
For some in the world, it is as precious as gold. Yet, this thing, is never sold. It is kept, but never used. It's a weakness that cannot be removed. A weapon that can be used against god. If they have it, you know it, then they have lost. What is it?
Formed long ago, yet made today, Employed while others sleep. What none would freely give away. Nor any wish to keep. What is it?
Four jolly men sat down to play, And played all night till break of day. They played for cash and not for fun, With a separate score for every one. When it came time to square accounts, they all had made quite fair amounts. Now, not one has lost and all have gained - Tell me now, this can you explain?
Four letters form me quite complete, As all who breathe do show; Reversed, you'll find I am the seat Of infamy and woe. Transposed, you'll see I'm base and mean, Again of Jewish race; Transposed once more, I oft am seen To hide a lovely face. What are the five words?
Glittering points that downward thrust, sparkling spears that never rust. What is it?
Granny looked up from her rocking chair and said: As far as I can tell, there is only one anagram of the word trinket. What is it?
Half of me will mend, the other half will imprison. When I am together, I will poison. Who am I?
Half-way up the hill, I see thee at last. Lying beneath me with thy sounds and sights - A city in the twilight, dim and vast, With smoking roofs, soft bells, and gleaming lights. What is it?