1. Which rectangle do you like most?

2. The Golden Ratio
What is it?

3. The Golden Ratio in life

4. Quilts

5. Who noticed the “divine” ratio?
Leonardo Fibonacci, who was born in the 12th century, studied a sequence of numbers with a different type of rule for determining the next number in a sequence. He began the sequence with 0,1, ... and then calculated each successive number from the sum of the previous two. This sequence of numbers is called the Fibonacci Numbers or Fibonacci Sequence. The Fibonacci numbers are interesting in that they occur throughout both nature and art. Especially of interest is what occurs when we look at the ratios of successive numbers.

6. Φ has the value =  (√5 + 1)/2 …

7. Fibonacci Numbers and the Golden Section

8. Discovering the Golden Ratio

9. Fibonacci puzzles

10. Now your turn:
What other logos can you find that are golden rectangles?
Where else have you found the golden rectangle?
Explain what the golden ratio is in your own words.
You may search the web, to help you.