This was a Grade 10 sketchbook assignment for the month of December. Students were asked to either draw a Christmas ornament or, alternatively (for those that don't celebrate Xmas), any shiny object. Students had to draw from life and try to capture the 3-D quality of the form as well as show
the shiny surface through accurate shading.
Essential tools, in my opinion, for realistic drawings are a 3B or 4B pencil, a blending stump (tortillon) and kneadable eraser. At the beginning of the year I demonstrate how to use all these tools and students are generally surprised and impressed by the results they can achieve.