Op art in complementary colours

You need:

1. drawing paper 14 by 14 cm
2. ruler
3. pencil
4. piece of cardboard, 6 by cm
5. markers
6. black paper for background
7. scissors
8. glue

Check during the introduction of this lesson what students already know about primary and secundary colours. What are the primary colours? How do you make secondary colours out of them?

Show a picture of the colour circle and tell about complementary colours: the colours who are opposite to eachother in the colour circle. Blue and orange, yellow and purple, greed and red.

Divide the drawing sheet in four squares of 7 by 7 cm. Cut a shape from a piece of cardboard and trace it four times in the squares. Draw vertical lines with a pencil with 1 cm between them. Colour the shapes and backgrounds like a checkerboard with complementary colours and one in black and white.
Cut the squares and paste them on a black sheet.