Ключевые слова: activity, alternative, background, balls, board, boxes, brain, child, childhood, closeup, cognitive, color, colorful, concept, design, develop, development, didactic, education, educational, explore, fine, fun, game, house, infant, learn, learning, leisure, material, montessori, mosaic, motor, nobody, object, resource, sensorial, sensory, skills, sorting, stereognostic, stimulate, table, tactile, toddler, touch, toy, wooden,