a talk or lecture in which the speaker illustrates points by drawing on a blackboard: The coach gave a chalk talk before the big game.
[ 1830-40, Amer. ]
a talk or lecture in which the speaker illustrates points by drawing on a blackboard: The coach gave a chalk talk before the big game.
[ 1830-40, Amer. ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012