In this activity, students approach the notion of time and how time can be measured. They build and use a sundial, learning that you can tell the time using the Sun and discovering that a long time ago, it was much more difficult to tell the time than it is today. They will also compare the accuracy and precision of this method with modern ways of telling time.

Activity Information

Big Ideas

Astronomy is one of the oldest sciences in human history

Astronomy is one of the oldest sciences in human history

Source: AstroEdu – International Astronomical Union