Here is a project I do based on Gerhard Richter. Students create two paint-scraped paintings using the primary colors. When they scrape the paint, the colors mix and create secondaries. Afterwards, I cut up one of their paintings and they weave their two artworks together. Here's a write-up on a previous Richter project I did.

Gerhard Richter is a contemporary German artist who is well-known for his photorealistic paintings that he then blurs using a soft brush or squeegee. He is also famous for creating abstract paintings and then using a squeegee to scrape away paint.

For this project, we painted two sheets of paper the primary colors. When painting, we had to work thickly and quickly with our paint so that it wouldn't dry. After students had covered their papers with the primary colors, they used a strip of tagboard to scrape away the paint on their paper. As they scraped, the primary colors would mix together and create the secondary colors. The kids thought this was the COOLEST THING EVERRRRR and I thought it was pretty cool too for re-learning our color mixing! As they scraped, they could also change the pressure to their scraping and it would create different effects on their paper.