I recently did a project with my third and fourth graders that involved print making. I saw the project here and thought with some minor tweaking it could work in our classroom. We reviewed warm and cool colors, watercolor techniques, stamp making and print making. I inherited several stacks of foam trays so we used those (along with dull pencils) to make the stamp. The kids were very creative with their city drawings and proud of their finished pieces. I definitely think that we will do this one again.