Evaluation:
5 points -- Accuracy of Gray Shades
5 points -- Smooth Blending from White to Black
10 points total.
Alternate Assignment:
If students have done the worksheet in a previous class and they'd like to practice shading in a more creative way, they may fill a paper with random soft shapes and shade them like below.(Start by drawing an inch wide border around the paper.)
Evaluation
1 point -- 1 inch border/frame
4 points -- Variety of different sized organic shapes
5 points -- Smooth Blending from White to Black
10 points total.