This is a perfect activity to do on or around November 23rd, known as Phi Day for its relation to the Fibonacci sequence: 1, 1, 2, 3, ...
Students are given the instructions to construct Golden Rectangles. During the activity, they will construct and measure two of their own Golden Rectangles to calculate a rough estimate for phi.
Background information about phi is provided.
Students then look at several examples of Golden Rectangles from art and architecture and then use the process of creating a Golden Rectangle to test the proportions of the art.