The children see how magnifying the image many times reveals that it is composed of pixels, tiny squares of single colours. Children are invited to record a part of the magnified image using sketchbooks. They should show clearly how the image is made from small coloured squares. It may be appropriate for them to work in coloured pencils or felt pens. During a second session at the computer, the teacher show children that the screen resolution can be changed.
Resolution is expressed in pixels.
The teacher now adjusts the colour settings in the same way. Inspired by the pixel concept the children are invited to use view finders to help isolate a small section of natural colour. Natural objects could be bought into the classroom or perhaps the children could explore natural colour outside. Children observe colour through the viewfinder and first make an observed drawing using pastels or coloured crayons. For the second task children are asked to 'abstract' their colour studies by pixilating the image.