Undulating Pipes and Segmented Worms

1. After an introduction to shading techniques students are given a hand out to practice their shading skills. (Click here to see a finished version of the handout.)

This project relies on shading skills to create the optical illusion of pipes or segmented worms bulging out and in. A brief introduction to Op-Art is given with emphasis on Victor Vasarely's artwork.

Students start the Undulating Pipes Project by making gently waving lines across a piece of paper from left to right.

2. Next a line is drawn through the center from top to bottom. This line should also wave slightly.

3. Almonds or football shapes are drawn where the vertical line intersects with the horizontal lines. The vertical line is then erased.

4. Repeated curved lines are added corresponding to the almond shapes from step 3.

5. Colored pencil is used to shade the edges of each segment fading from dark on the edges to light toward the center.

6. Sharpie marker is used to define each segment and "punch up" the final drawing. (line weight is discussed as a way to push the depth even further.)

Evaluation:
2 point -- Value Scale Worksheet
2 points -- Nicely Arranged Pipes
3 points -- Shading/blending from light to dark
3 points -- Inked with Thick and Thin lines
10 points total