Ключевые слова: activity, ball, billboard, black, blackboard, blank, board, chalk, chalkboard, circle, class, club, concept, design, draw, drawing, education, foot, football, game, goal, handwriting, kick, learning, leather, leisure, lesson, match, message, note, old, play, round, school, sketch, soccer, sphere, sport, student, target, teacher, teaching, text, texture, white, write,