Here's a recent pen and ink sketch that I enjoyed putting together- scanned, and then coloured in photoshop. This made me think of an art history/ studio project that would be fun to try out in class.
Part One: students analyze oil sketches and paintings of winter landscapes by Tom Thomson and Lawren Harris with attention to the colour they used for light and shadows.
Part Two: students complete a Creative Process booklet to develop their own sketch and painting about light and shadows.
Part Three: final painting and group critique.
Here are a few of Tom Thomson's: