PREP: I've found it helpful to trace 9 large circles very lightly in pencil on watercolor paper to use as a guide.
1. Students to make an "X" in the middle of each circle with a white crayon, and then a horizontal line through the middle so their flake will have 6 legs. After that, they may add dots or arrows to each. They must press very hard and draw slowly to leave a lot of crayon on the paper.
2. Once you are certain that there is a snowflake drawn in the middle of each circle, pass out lots of liquid watercolors. Students fill in each pencil circle with paint, the snowflake will “magically” appear. A simple project with beautiful results, I think.