Shapes, Circle with Plasticine

Keeping with my objective this year of teaching "Shapes", my teen age special ed. classes created those colorful artworks 

1. First thing create many round shape balls from plasticine.
2. Using  precut cardboard stancil  they drew the circle
3. Paint outside and inside the circle in 2 different colors.

 My after thought, it can be a good way to work on the COLOR WHEEL- using Primary Colors paints and  Secondary Colors plasticine.