Sundials are the world's first clocks. They were used by many ancient societies like the Greeks, Romans and Egyptians.
Sundials tell the time using the sun. When the sunlight hits the upright arm, it casts a shadow onto the ground. Where the shadow falls shows what time it is! This can be tricky though as the amount of sunlight we get can vary based on the season and the weather.
A tip! If it is smoky in your area, you can do this activity inside using an alternate source of light like a lamp or flashlight instead of the sun! In our example, Nicola used a lamp instead of the sun.