What is the diameter of the Sun? How far is the Sun from the Earth? These seemingly imponderable “universal” questions can be easily answered using this simple but effective Sun Scale apparatus. Easy-to-assemble apparatus allows an image of the Sun to be projected onto a calibrated screen and its dimensions measured. The diameter of the Sun and its distance from the Earth are then easily calculated. This is a great cross-curriculum activity tying in both mathematics and earth science! Kit contains detailed instructions, Teacher Notes, great extension activities, and all the materials needed for one complete setup.