Source: www.artprojectsforkids.org. by Ms. Kathy Barbro.
This is an interesting activity to let kids practice drawing contour lines.
1) bond paper
2) colored markers
1) Look at pictures of different kinds of leaves.
2) Draw leaves of different shapes. Fill the paper with at least 3 leaves facing different directions.
3) Color the leaves with different colors. It doesn't have to be all green.
4) Lastly, trace the leaves around with colored markers, following the edges of the original and expanding as they proceed. As the shapes grow, they will eventually bump into the other leaf shapes and you will have to decide which ones are in front and which are in back.
Here are samples from some of my third graders: