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Wednesday, February 20, 2019

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.



4 comments:

  1. Hello Vin here, I think you have added the most information and videos out of your class. But you can always do better so maybe add more facts and make a better sundial.

    Bye!

    ReplyDelete
  2. Hi Izzy!
    I like how you added 3 facts about sundials.
    How much time did it take you to make the sundial?

    ReplyDelete
  3. Hi Izzy, nice blog post about Sundials. If you don't know me I am one of the students in 7/8 Tz the class you came and showed your Sundials to. Anyway you did really well. I like how you added slide shows. I have seen your sundial it looks really good. Next time add some colour in your post. Bye

    ReplyDelete
  4. Kia Ora Izzy i'm Miguel and my friend Tevita we really like that you have put so much information and even made a google slide we also liked the look of you sundial. Maybe next time tell us how to make a sundial.

    ReplyDelete

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