Ключевые слова: abstract, academic, antique, art, artistic, background, black, blackboard, blank, board, chalk, chalkboard, classroom, clean, closeup, color, copy, copyspace, crayon, creativity, design, draw, drawing, ds, education, empty, equipment, five, frame, grunge, grungy, heap, isolated, learning, macro, object, old, piece, preschool, school, single, slate, space, square, stick, student, teacher, texture, white, writing,