Make a Backyard Summer Camp Timekeeper: Set up this simple sundial, then keep the fun on track every day thereafter.
"Fourth graders worked from photos to draw detailed moths. They used Sharpies to trace their best drawing onto a transparency. The transparency was arranged with weeds, ferns and grasses to create a landscape. Stars were dots and dabs of Sharpie, and the moon was made from cut paper. Students placed their compositions in the sun for 5 minutes, then submerged them in water."