An unusual yet accessible way for children to create an optical illusion. Starting with a life-size outline of a person, the shape is then filled with parallel lines of contrasting colours. Each time the outline is crossed the line bumps slightly to create the 3D effect. Upon completion, the entire figure appears to be raised from the paper. Can be used on a small scale or as a large piece of display covering an entire wall. Larger pieces will probably have greatest effect. There is a brief animated reference to the English Op Art artist Bridget Riley, as well as some of her works, to set this in context and add an element of art history.
Children could cover a wall with a crowd or line of op art figures. Encourage them to experiment with other more complex shapes in the same style. Children could try drawing a hand, foot or face in this style.