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    Dear pupils,
    in this page, we will write the history of the Golden Ratio or the number φ (phi).
    We will answer questions like
     -why is the number 1.61803398875... represented by the Greek letter  φ?
     -where and when have we met the Golden Ratio first?
     -how can we calculate the number φ?
     -how can we construct it with ruler and compass (geometrical construction)
     -where do we meet it, except in mathematics books?
    and many other questions....

   But first, write or upload  something about the Golden Ratio on the padlet below!

  

 

 

 

Below you can see how to construct a golden rectangle.