Watch this video that demonstrates various pencil shading techniques. Then use something round like a jelly jar lid to draw 3 (or more if you're feeling motivated) spheres in your sketchbook and choose some of the techniques to try. Label each one with the name of the technique you tried.
Watch this video about a famous art heist. Think about the question at the end of the video. Why do YOU think the Mona Lisa is the most famous painting in the world? Save the last 3 pages of your sketchbook to write answers to the Art Appreciation Homework questions. Write the date and then your answer.