Ключевые слова: back, back to basics, background, basic, basics, believe, black, black and white, blackboard, business, chalk, chalkboard, concept, copy, core, cork, educate, education, educator, elemental, essence, essential, facts, forward, fundamental, important, inquire, inquiring, isolated, keep, learn, message, paper, return, school, simple, simplify, soul, start, statement, sticky, strategy, substance, symbol, teach, text, touchstone, train, white, word,