Talvinen maisema --- Another great idea for teaching value using shades and tints. The original poster of this project, art teacher Jessica Young, gives a great explanation of the steps and tips she used with her fourth-grade students.
Keyhole Paintings - Did with grade, turned out AMAZING. Each student got a book about a different country, chose a picture to copy within their "keyhole." Draw then paint. Used oil pastels to create door and wood grain. Cut out key shape from template