Easy, fun science experiment for elementary-school aged kids looking to learn more about the movement of our planet and time! Fun experiments to be done with the dial can be found here! For a little more on the theory behind this dial, check out this link! As an avid plane enthusiast, I had to make the dial in the shape of an F-16 tail. Cheap sun dials on Amazon can be found for $15 or more, whereas this only costs pennies in filament!