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Explain - 'tone' is a colour mixed with grey.
Explore some artworks that use tones.
Demonstrate making a sketch in yellow chalk of a person without
looking at the paper. Be sure to use large sweeping arm movements
to fill up the page. NB I use yellow chalk because it's easy to
paint over the construction lines.
Have the children sketch a friend without looking at their paper.
Really encourage them not to look as it is heaps of fun to see
the finished portrait :)
Alter a few lines to make the sketch as 'unrealistic' as possible.
Paint the sketch with tones only ie colours / colors mixed with
grey / gray.
Once dry outline in black paint with a thin brush.
Hang and evaluate.