nathan and justins circles
TRANSCRIPT
![Page 1: Nathan And Justins Circles](https://reader035.vdocument.in/reader035/viewer/2022081401/55779bbbd8b42a410a8b4d49/html5/thumbnails/1.jpg)
Why does the circle area formula work?
By Nathan Wright and Justin Dreyer
Friday 6th march
![Page 2: Nathan And Justins Circles](https://reader035.vdocument.in/reader035/viewer/2022081401/55779bbbd8b42a410a8b4d49/html5/thumbnails/2.jpg)
Problem
• Why does the circle area formula work ?
• How do you measure the area of a circle?
![Page 3: Nathan And Justins Circles](https://reader035.vdocument.in/reader035/viewer/2022081401/55779bbbd8b42a410a8b4d49/html5/thumbnails/3.jpg)
Process
• First we coloured half the circle • Then we cut the circles • Then we placed the cut up circle in a rectangle
shape• Then we learnt how to measure the area.
![Page 4: Nathan And Justins Circles](https://reader035.vdocument.in/reader035/viewer/2022081401/55779bbbd8b42a410a8b4d49/html5/thumbnails/4.jpg)
Challenge
• We found it hard to understand the explanation
• We also found out it was hard to make the right shape
![Page 5: Nathan And Justins Circles](https://reader035.vdocument.in/reader035/viewer/2022081401/55779bbbd8b42a410a8b4d49/html5/thumbnails/5.jpg)
Solution
![Page 6: Nathan And Justins Circles](https://reader035.vdocument.in/reader035/viewer/2022081401/55779bbbd8b42a410a8b4d49/html5/thumbnails/6.jpg)
Circle cut and glued in to a rectangle shape
![Page 7: Nathan And Justins Circles](https://reader035.vdocument.in/reader035/viewer/2022081401/55779bbbd8b42a410a8b4d49/html5/thumbnails/7.jpg)
Thank you for watching