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Wednesday 2 June 2021

Pi Investigation

We've been thinking about Pi. No, not pie. Not pai either! The mahi was tino pai though, and it did get us thinking about the size of certain pastries. 


We started off by thinking about how to visually calculate, or estimate, the area of a circle. Some great strategies were shared, for example finding the number of full squares then estimating the total area of part squares. This got us thinking... there must be a more accurate way!

   

So we followed our instructions, measuring and recording diameter and circumference (and learning what these are!). 



Then we were asked to divide our circumference by the diameter. This hovered around 3 point something no matter the size of the circle we had measured. Hmm..



We figured out that we could reverse the equation and multiply either the circumference or diameter by Pi to find the true measurement. We think our circumference measurement was probably a bit off because of the string. 




He tino PAI tō mahi pāngarau, koutou!


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