Ключевые слова: abc, academic, alphabet, b, background, black, blackboard, board, c, chalk, chalkboard, class, classroom, close, concept, educated, education, educational, educator, elementary, erase, exercises, expertise, hand, handwriting, intellectual, intelligence, kindergarten, knowledge, learn, lesson, letter, nursery, presentation, primary, school, schoolwork, smart, student, study, studying, teach, teacher, white, work, write,