This one I found on Crystal Production's website......did you know they have free "Downloadable Lesson Plans" ?-- right here on their home page. I just love this lesson; it's one of those that doesn't take much skill, but turns out wonderful. We had to finish ours in one sitting, so I modified the lesson a bit, but you can use these steps if you have more time.
We used black or blue construction paper.
Step 1: Using a White Oil Pastel, make 4 large & simple lines that do not touch.
Step 2: Using same white pastel connect the 4 lines to each other, and connect them to sides of the page---this creates large shapes.
Step 3: Make each white line on the paper 1 inch wide with the white pastel.
Step 4: Use soft pastels or chalk to color interior border lines inside each shape.
Step 5: One a separate piece of paper, same color as your background (blue or black) draw and color a sun with soft pastel or chalk.
Step 6: Cut and attach sun to background with thick double-sided tape, this makes it pop off the page - which makes the kids smile. (If the tape doesn't stick to the chalk, put dots of glue on the back of the tape too.)