One of our Science lessons this quarter is about Day and Night. In the course of our discussion, we talked about how the sun is important to all living things. One of the points raised is that the sun is also used to tell time.
The students were exposed to the earlier tools used to tell time using the sun: the sundial. They were asked to decorate their own sundials.
(template used from: https://pagingsupermom.com/wp-content/uploads/2015/05/Sundial-Clockface-Printable.pdf)
Then, we had a trip to the school grounds. A quick check on what the time is was done before they placed their sundials under the sun. It was amazing how fascinated the students were when they saw their sundial showed the same time the school clock had.