Math sundial.

Using sundials to tell the time.

In Math class we were finding ways to tell the time and the most popular was a sundial so our Math teacher came up with the idea to make a sundial in groups. Sadly I was absent while the class was making the sundial but my group made an amazing sundial.

3 facts about sundials

1. I found out that Sundials were first recorded being used in 1500 BC and they were created by The mathematician and astronomer Theodosius of Bithynia.
Wikipedia.

2. Sundials are accurate all year around if you line it up with the axis of the earths rotation.
Wikipedia and Mr.

3. The sundial can not be used at night or when there is no sun because the sundial uses shadows to tell the time.
Wikipedia and conman knowledge. 

I didn't know that the poll in the middle was called a gnomon.

I have found out that the shadow will be much shorter at mid day and much longer in the morning.

I have learnt lots of different things while learning about the sundial but my favourite thing was that this amazing thing was one of the first ways of telling time before a clock was invented.