Make a sundial to tell the time!
A sundial can be made by simply placing a stick vertically in the ground. The Sun’s apparent movement across the sky makes shadows move throughout the day. This movement is predictable making this a great way of telling the time.
Sky & Telescope magazine has a well designed and easy to make sundial which only requires simple materials to make.
- Sky & Telescope Magazine HOW TO MAKE A SUNDIAL THE SIMPLE WAY article.
- Direct download link: Southern Hemisphere Sundial
More information about sundials can be found on Wikopedia.