It is hard to imagine that, eight hundred years on, the study of Fibonacci could affect the lives of teenagers in Australia. Or is it? A mathematics class of more able Year 9 students in a regional city of Western Australia feels that it has happened to them. Thirty-two students submitted a Fibonacci task as a mathematics assessment, with many of them acknowledging that they now view the world differently as a direct result of this work. This article describes the four parts of the Fibonacci task. Part 1 set the scene, with students researching Fibonacci, using a variety of resources. In Part 2, students were asked to find connections between the Fibonacci numbers and the patterns breeding of rabbits. Part 3 introduced technology by using a spreadsheet to generate the Fibonacci numbers and their ratios to reach the Golden Ratio. In Part 4, students explored the appearance of the Golden Ratio in a number of human endeavours. They were also asked to reflect on their learning.