Written and pictorial instructions you can use with your Grades 4 - 6 students! Easy for you, a sub or a volunteer to teach beautiful oil pastel planets. The background is SO FUN to make - just watercolor, vinegar, and baking soda, which gives an exceptionally soft atmospheric like effect. In this lesson, students will:Create an Acid/Base effect with baking soda, vinegar, and watercolor to make a lively reactive background.Learn the rule of 3's and how to balance a composition. How to layer an