This is another fun project my student teacher taught to my Grade 6 and 7 classes last week. Classic scratch art. She ordered the paper (well, it's like colored acetate) here: http://store.schoolspecialtyonline.net/OA_HTML/xxssi_ibeProductDetail.jsp?itemId=476271&itemNumber=9223365028
She gave the students a theme of 'music' and then demonstrated how to create the scratch art.
Here are the tools: wooden sticks, mini squares of scratch art paper for the students to practice on and white paper to draw their designs onto.
Students draw out their designs on white paper cut to the same size as the scratch art paper. Then they paper clip it to the scratch art and pass over all the lines which will lightly transfer the design onto the black scratch art.
Then scratch away with the wooden tool.